JP5521157B2 - A warm bath with an antenna and a mobile information processing system using the same - Google Patents

Description

  The present invention relates to a cloth warming provided with an antenna for detecting a wireless ID tag such as an RFID and a mobile information processing system using the same.

  In recent years, wireless ID tags such as RFID have been miniaturized, and a system for identifying a wireless ID tag by attaching it to various mobile bodies has been developed. In order to recognize the wireless ID tag, an antenna for transmitting and receiving information to and from the wireless ID tag is required.

  Due to the miniaturization of the wireless ID tag, there are fewer restrictions on the mounting position with respect to the moving body. For example, even when attaching to a human being, the wireless ID tag is attached to an existing object to be worn such as clothes, personal belongings and personal belongings to identify and position the person. Recognition is possible. Therefore, the antenna that transmits and receives to / from the wireless ID tag is also attached to various existing items close to the wireless ID tag when the person moves, so that identification and position recognition can be performed in a natural operation without restricting human movement. It is desired to do.

  As a management method using a wireless ID tag, for example, in Patent Documents 1 and 2, an RFID receiving antenna and an infrared detection device are provided at an entrance for detecting entrance and exit, and the infrared detection device detects passage of a human body and possesses it. A management system is described in which a holder who has passed through an RFID tag is identified and the entrance / exit is grasped.

  In addition, as an article identification management method, for example, in Patent Documents 3 and 4, an ID tag is attached to an antenna by passing an article attached with an ID tag through a warm sheet-like sheet body provided with an antenna. The point to be read is described.

  Further, as a fabric provided with an antenna, for example, in Patent Document 5, a non-electrically conductive yarn made of polyester fiber or the like is used as a warp, and an electrically conductive yarn made of metal fiber or the like is used as a weft. A fabric antenna woven using is described. Further, in Patent Document 6, at least part or all of a conductive region and an insulation formed by an arrangement pattern of conductive portions are formed on a woven fabric composed of gold and silver threads having conductive portions and conductive silk yarns. An antenna comprising a slot having a characteristic is described.

JP 2001-028090 A JP 2003-021679 A JP-A-11-301843 JP 2009-290512 A JP 2008-546209 A JP 2009-044439 A

  As described in Patent Documents 1 and 2, in the conventional entrance / exit management system, it is necessary to detect the passage of the RFID tag holder with an infrared detection device, and the RFID attached to a position away from the holder. Since detection is performed by the receiving antenna, there is a possibility that the holder cannot be accurately identified when a plurality of holders pass in close proximity.

  As described in Patent Documents 3 and 4, when an article attached with an ID tag is passed through a warm sheet-like sheet body so that the article is in contact with each other, the article is sequentially contacted to accurately identify the article. Although it can be read, it is not supposed to pass the holder of the ID tag.

  Moreover, although the metal fiber is used in patent document 5, when a metal fiber is scarcely stretchable and it combines with a synthetic fiber to make a woven fabric, it has the fault of being disconnected or bent without following the expansion and contraction of the synthetic fiber. Yes, it is difficult to use as an antenna material. In Patent Document 6, a gold-silver thread obtained by vapor-depositing aluminum on a base material made of PET is used as a conductive thread. However, the gold-silver thread has a drawback that it is easily disconnected and has a high electric resistance. When the gold and silver thread is used in a twisted state, there is a problem in that the antenna characteristics are not constant because the conductive part is not uniform in the twisted part when viewed from a predetermined direction. In any case, it cannot be said that the fabric has sufficient performance as an antenna for wireless communication such as RFID.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a warmth provided with an antenna capable of accurately reading ID data when a holder of a wireless ID tag passes and a mobile information processing system using the same. is there.

  The warming according to the present invention has a cloth body that is composed of ground yarn having a relative dielectric constant of 4 or less and has a slit through which a person passes, and a resistance obtained by covering the core yarn with metal fibers is 5 Ω / m And a plurality of antenna wires which are made of conductive yarns of 15 Ω / m and arranged at predetermined intervals along the slits and which are closely attached to the cloth body. Furthermore, the core yarn is characterized by using the same yarn as the ground yarn. Furthermore, the antenna line is held by a ground yarn that is inserted and intersected in the warp direction and / or the weft direction of the cloth body. Furthermore, the antenna line is held by a sewing thread that is sewn into the cloth body so as to intersect the antenna line. Further, the antenna line is arranged in a direction orthogonal to the slit forming direction.

  A mobile information processing system according to the present invention includes a warming-up according to any one of claims 1 to 5 attached to a plurality of locations in a building, and a wireless ID tag received by the antenna line held in the warming-up. An information reading unit that reads ID data based on a signal and an information processing unit that creates movement information for each ID data based on the read ID data and reading position information are provided. Further, the information processing unit creates entry / exit information for each ID data based on the ID data and the reading position information.

  The warming bath according to the present invention has the above-described configuration, so that a plurality of antenna wires are closely held by arranging them at predetermined intervals along a slit with respect to a cloth body on which a slit through which a person passes is formed. Therefore, when the holder of the wireless ID tag passes through the cloth parts on both sides of the slit, a plurality of antenna lines along the slit come close to the wireless ID tag, and the wireless ID tag and the antenna line Wireless communication can be performed reliably between the two.

  That is, when a person goes through warmth, the cloth parts on both sides of the slit come into contact with the person's shoulders so as to slide, but the cloth part with multiple antenna wires arranged along the slits is the person's shoulders. The plurality of arranged antenna lines are sequentially brought close to the front part and the shoulder part of the person, and can be received by any one of the antenna lines.

  In addition, since a plurality of antenna lines are arranged along the slits, the antenna lines can be surely brought close to the wireless ID tag even when there is a height difference in the height of the person passing through.

  In addition, since the antenna wire made of conductive yarn having a resistance of 5 Ω / m to 15 Ω / m is held in close contact with the cloth body composed of the ground yarn having a relative dielectric constant of 4 or less, By using a low resistance antenna wire, it can be used as a highly sensitive antenna.

  In addition, since the conductive wire with metal fiber covering the core yarn is used as the antenna wire, the antenna wire is excellent in flexibility and stretchability, and the ground structure is curved in a state of being held in close contact with the ground tissue. Even when it is deformed, it can follow the deformation of the ground structure. And since the metal wire is covered so as to be wound around the core yarn, it has the same mechanical characteristics as the yarn made of synthetic fiber, and even when the antenna wire is curved, it does not break, and The metal fiber does not bend.

  In addition, by using the same thread as the ground thread of the cloth body as the core thread of the conductive thread, the conductive thread can have the same flexibility and stretchability as the ground thread, and the antenna wire is held in close contact with the cloth body. In this state, both can be deformed in the same way without shifting.

It is a perspective view regarding the embodiment concerning the present invention. It is the elements on larger scale regarding the fabric part in which the antenna wire was arranged. It is a partially expanded view regarding a conductive yarn. It is the elements on larger scale regarding the case where an antenna wire is woven. It is the elements on larger scale regarding the case where an antenna wire is sewn. It is explanatory drawing regarding another preparation methods of a cloth body. It is explanatory drawing when the holder of a wireless ID tag passes warmth. It is a front view regarding the holder of a wireless ID tag. It is a block block diagram regarding a mobile information processing system. It is a processing flow regarding movement information. It is a display example when moving information is displayed as a list. It is a display example at the time of displaying movement information on a map.

  Hereinafter, embodiments according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

  FIG. 1 is a perspective view of an embodiment according to the present invention. The warm bath 1 includes a cloth body 2 in which a slit S through which a person passes is formed, and a plurality of antenna wires 3 are held in close contact with the cloth body 2 at predetermined intervals along the slit S. Each antenna line 3 is connected to a reading device 5 via a wiring cord 4. Then, when the wireless ID tag comes close to the antenna line 3, a signal received from the wireless ID tag to the antenna line 3 is input to the reading device 5, and the received ID data is read by the reading device 5. The read ID data is transmitted from the reading device 5 to the information processing device 6 by wireless communication together with the reading position information. As will be described later, the information processing device 6 stores the transmitted ID data and reading position information, and creates the latest position information and entry / exit information.

  In FIG. 1, the cloth body 2 is composed of a combination of two cloths with a gap between the slits S, but the slit S is formed by cutting one cloth from the lower end toward the upper part. You may do it.

  The fabric 2 may be a woven or knitted fabric used for normal warming, and the ground yarn that forms the fabric is preferably an electrically insulating material having a relative dielectric constant of 4 or less. Specifically, polyester fibers such as PET (polyethylene terephthalate), PTT (polytrimethylene terephthalate) or PBT (polybutylene terephthalate), nylon (polyamide fiber), aramid (aromatic polyamide fiber), polypropylene or polyethylene, etc. Examples thereof include polyolefin fibers, synthetic fibers such as acrylic, chemical fibers such as rayon and acetate, and natural fibers such as cotton, hemp, wool, and silk. Moreover, you may use the composite fiber which mixed multiple types of these fibers.

  FIG. 2 is a partially enlarged view of the fabric portion in which the antenna line 3 is arranged along the slit S. FIG. The antenna line 3 is set in a dipole antenna shape in which a pair of conductive yarns 3a and 3b arranged in a straight line along a direction perpendicular to the slit forming direction is combined. The adjacent ends of the conductive yarns 3a and 3b constituting the antenna line 3 are spaced apart from each other by a predetermined distance, and the frequency characteristics of the antenna are determined based on the interval between the separated ends of the conductive yarns 3a and 3b. The In addition, another conductive yarn is arranged in an orthogonal direction at the opposite end of the conductive yarn to form a connection line 3 c of the wiring cord 4. In this example, one connection line 3c is not connected to the conductive yarn 3b but is arranged in parallel along it. The position where the connection line 3c and the conductive yarn 3a are electrically connected is determined by actually measuring the characteristics of the antenna line 3 and searching for the optimum position. The interval between the end portions of the conductive yarn described above is not the actual length of the conductive yarn but a linear distance between the end portions in plan view.

  The conductive yarn used for the antenna wire 3 is obtained by covering metal fibers such as copper fiber, tin bronze fiber, and stainless fiber around the core yarn. As the core yarn, polyester fiber such as PET (polyethylene terephthalate), PTT (polytrimethylene terephthalate) or PBT (polybutylene terephthalate), nylon (polyamide fiber), aramid (aromatic polyamide fiber), polypropylene or polyethylene, etc. Polyolefin fibers, synthetic fibers such as acrylic, chemical fibers such as rayon and acetate, and yarns such as natural fibers such as cotton, hemp, wool, and silk may be used. From composite fibers in which these fibers are mixed. May be used.

  As the covering process, there are a single covering process and a double covering process. FIG. 3 shows a conductive thread that has been subjected to a double covering process in which metal fibers 31 are wound around the core thread 30 in a double manner. Yes.

  The electrically conductive yarn desirably has an electrically low resistance, and the electrical resistance is preferably set to 5 Ω / m to 15 Ω / m. When the electric resistance exceeds 15 Ω / m, the sensitivity as an antenna deteriorates.

  As for the mechanical properties of the conductive yarn, when the number of twists of the metal fiber to be covered is 3000 T / m or more, it has almost the same properties as the core yarn. By using a conductive yarn in which a metal fiber is covered in the core yarn for the antenna wire, the antenna wire 3 having flexibility and stretchability can be obtained. When the antenna wire 3 is closely attached to the cloth body 2, the cloth is Even if the body 2 is curved or stretched, it is possible to follow the deformation of the cloth body 2 without the antenna wire 3 being disconnected or displaced.

  FIG. 4 is an enlarged view of the fabric portion when the antenna wire 3 is held in close contact with the fabric body 2 woven by double weaving. The antenna wire 3 is held in close contact with the woven fabric on the upper surface side of the double woven fabric. Conductive yarns that are antenna wires 3 are arranged between the weft yarns 2a, and the warp yarns 2b are alternately sandwiched between the upper and lower sides of the conductive yarns and are sandwiched in the same manner as the weft yarns 2a. Therefore, the antenna wire 3 is held tightly on the cloth body 2 and does not fall off. In addition, since the conductive yarn has flexibility and stretchability, even if the fabric body 2 is deformed, it can be deformed following the deformation, and troubles such as disconnection do not occur. If the same weft yarn 2a is used as the core yarn of the conductive yarn, the mechanical properties of the conductive yarn can be set almost the same as the warp yarn, and the conductive yarn follows the deformation of the fabric body 2 more smoothly. Is possible.

  Further, since the warp 2b intersects the conductive yarn at substantially equal intervals, it is possible to set the length of the conductive yarn to be held in close contact based on the number of intersecting warps 2b. Therefore, when weaving the cloth body 2, a conductive yarn is inserted as a weft for a predetermined number of warp yarns and woven, and after the cloth body 2 is woven, the conductive yarn is cut while leaving the portion held by the warp. It can also be used as a line. By forming the antenna line in this manner, the interval between the ends of the conductive yarn can be set with high accuracy, and the sensitivity of the antenna can be improved.

  In this example, since the cloth body 2 is woven by double weaving, a structure having an electrically insulating property is disposed on the lower surface of the antenna wire 3, and the antenna wire 3 is a conductor. It is designed to prevent touching.

  In the above example, the conductive yarns are arranged in the weft direction. However, the conductive yarns can be arranged and held in the warp direction, and arranged in the warp direction and held by the weft as in the connection line 3c. Also good.

  FIG. 5 is an enlarged view of the fabric portion in the case where the antenna wire 3 is held in close contact with the cloth 2 woven by plain weaving with the sewing thread 7. In this case, the antenna wire 3 is linearly arranged on the surface of the cloth body 2 and fixed with an adhesive or the like, and is sewn alternately on both sides of the antenna wire 3 with the sewing thread 7 using a sewing machine or the like. The antenna wire 3 is held in close contact with the cloth body 2.

  When the antenna wire 3 is fixed by sewing, either a woven fabric or a knitted fabric may be used as the fabric body 2. Further, since the antenna wire 3 is attached to the cloth body 2 as a retrofit, it can be attached by checking whether or not the distance between the antenna wires 3 is set while measuring the length of the sewn conductive thread. Can be fixed to the cloth body 2 with high accuracy. If the sewing interval of the sewing thread 7 can be set at an equal interval, the length of the antenna line 3 can be set based on the number of times of sewing with respect to the cloth body 2.

  FIG. 6 is an explanatory diagram relating to another method for producing the fabric body 2. In this example, on one side of the fabric 20 to be the fabric body 2, two half regions are defined by the center line T of the fabric 20, and a plurality of antenna wires 3 are arranged at a predetermined interval only in one region. The wiring cord 4 that is held in close contact and connected to each antenna line 3 is disposed in one region (FIG. 6A). Then, the fabric 20 is bent along the center line T, and the fabric portion of the other region where the antenna line 3 is not provided is overlapped with the one region so that the antenna wire 3 and the wiring cord 4 are covered with the fabric 20. The cloth body 2 is produced by setting and sewing the peripheral edge of the cloth 20. Thus, the antenna wire 3 is tightly held inside the cloth body 2 to prevent the antenna wire 3 from inadvertently coming into contact with the conductor, and the antenna wire 3 is reliably transmitted to and received from the wireless ID tag. It can be performed.

  FIG. 7 is an explanatory diagram when the holder M of the wireless ID tag passes the warmth 1. As shown in FIG. 8, the holder M wears pads M1 and M2 with wireless ID tags attached to both shoulder portions. A plurality of strip-like RFID tags are arranged at predetermined intervals on the pads M1 and M2, and the longitudinal direction of the pads M1 and M2 is as horizontal as possible in a state where they are arranged along the shoulder line. Is set to

  In the state in which the cloth body 2 is suspended, the slit S is set in the vertical direction, so that the antenna line 3 orthogonal to the slit S is set in the substantially horizontal direction (FIG. 7A). When the holder M moves forward toward the slit S and passes through the warm bath 1 so as to scrape the fabric portions on both sides of the slit S, the fabric portions on both sides come into contact with the shoulder portions of the owner M. (FIG. 7B). Therefore, it will be in the state which adjoined the antenna wire 3 of the fabric part which the RFID tag arrange | positioned by the pads M1 and M2 contacts. Then, as the holder M moves forward, the fabric portion in contact with the pads M1 and M2 moves relative to the pads M1 and M2 so as to slide, and the antenna wire 3 is sequentially arranged on the pads M1 and M2. It comes to be set in the state close to the installed RFID tag.

  There is a difference in height depending on the holder M, and each person also has a different way of passing through the warmth 1. By arranging a plurality of antenna wires 3 at predetermined intervals along the slit S, the passing through In operation, one of the antenna wires 3 is set in a close proximity to the RFID tags of the pads M1 and M2 so as to be able to receive the ID data from the RFID tag.

  FIG. 9 is a block configuration diagram relating to the mobile information processing system using the above-described warmth. In this example, n heating devices 1 and n readers 5 are installed at a plurality of locations in a building. For example, in the case of a care facility, it is installed in a caregiver's room, toilet, hallway, outside doorway, etc. in a building.

The reading devices 5 _{1 to} 5 _n include reading units 50 ₁ to 50 _n and transmission / reception units 51 _{1 to} 51 _n , respectively. Each reading unit 50 receives ID data from signals received through the antenna lines 3 _{1 to} 3 _n. Each transmitting / receiving unit 51 transmits the ID data read by the reading unit 50 to the information processing device 6 together with the reading position information. The reading unit 50 reads ID data by a scanning method that sequentially reads the plurality of antenna wires 3 arranged on the cloth body 2. When the same ID data is read by a plurality of antenna lines 3 during one scan, the ID data may be transmitted to the information processing device 6 as if one ID data was read.

  The information processing device 6 includes an information processing unit 100, a storage unit 101, and a display unit 102. The information processing unit 100 includes a transmission / reception unit 100a that receives ID data and reading position information transmitted from the reading device 5, a movement information processing unit 100b that generates movement information based on the received ID data and reading position information, and A display processing unit 100c that performs processing for displaying the created movement information on the display unit 102 is provided. The storage unit 101 stores information necessary for information processing such as received ID data, reading position information, history information, and created movement information. The display unit 102 performs list display of movement information, map display, and the like.

  FIG. 10 is a processing flow regarding movement information. In this example, the latest position information and entry / exit information are created as movement information. First, it is checked whether there is received data from the reading device 5 (S100). If there is received data, ID data and reading position information included in the received data are extracted and stored in the storage unit 101 (S101). . As the reading position information, for example, the identification code transmitted from the reading device 5 may be stored as it is, or the identification code of the reading device 5 and the corresponding position data are stored in advance, and the received identification code is stored in the received identification code. Based on this, the position data may be stored as read position information.

  Next, the latest position information corresponding to the received ID data is read from the storage unit 101 (S102), and entry / exit information is created from the read latest position information and the received read position information (S103). Since the read latest position information is read position information received last time, entrance / exit information can be created by associating the previous read position information with the current read position information. For example, when the position of the previous reading position information is a living room and the current reading position is a toilet, the entry information of the toilet can be used.

  After the entry / exit information is created, the latest position information is updated to the read position information (S104). The received reading position information is stored together with the reception time as history information for each ID data.

  Then, display information is created based on the latest position information, entrance / exit information, history information, and the like (S105). For example, as shown in FIG. 11, the entrance / exit information is displayed as a list in time series for each ID data, or as shown in FIG. 12, the locus moved together with the layout inside the building based on the entrance / exit information is displayed as a map. It may be. The latest position information of each ID data may be displayed as a list.

  By displaying the movement information as described above, it is possible to grasp the current position, movement path, and the like of the owner of the wireless ID tag. As for entrance / exit, the entrance / exit information is obtained by suspending a pair of warm baths at the entrance / exit at predetermined intervals in the running direction and determining the passing direction according to the time difference of the ID data read by each warm bath. You may make it create.

  Since the warmth according to the present invention is structured with a flexible cloth similar to normal warmth and holds the filamentous antenna wire in close contact with the fabric, The design can be realized, and it is possible to install it as an interior product without feeling uncomfortable even if it is hung in the entrance or hallway of the building.

  In addition, since the reading device and the warm bath can be easily attached as a set, it is possible to easily manage the movement information by wireless communication by attaching it to a necessary place in an existing building. For example, it is suitable for installing in a care facility and confirming location information and entering / exiting management for a demented care recipient.

S slit 1 warm 2 cloth
2a Warp
2b Weft
20 Fabric 3 Antenna wire
30 core yarn
31 Conductive thread 4 Wiring code 5 Reading device 6 Information processing device 7 Sewing thread

Claims (7)

  A cloth body having a relative dielectric constant of 4 or less and formed with a slit through which a person passes, and a conductive yarn having a resistance covering 5 Ω / m to 15 Ω / m of a core fiber covered with a metal fiber. And a plurality of antenna wires arranged in a predetermined interval along the slit and held in close contact with the cloth body.   The warming yarn according to claim 1, wherein the core yarn uses the same yarn as the ground yarn.   The warmth according to claim 1 or 2, wherein the antenna wire is held by a ground yarn that is inserted in the warp direction and / or the weft direction of the cloth body and intersects.   The warming according to claim 1 or 2, wherein the antenna line is held by a sewing thread that is sewn into the cloth body so as to intersect the antenna line.   The warming-up according to any one of claims 1 to 4, wherein the antenna wire is arranged in a direction orthogonal to a direction in which the slit is formed.   6. Information reading for reading ID data based on a signal from a wireless ID tag received by the antenna wire held at the antenna wire held in the warm air and the antenna wire held at the plurality of locations in the building. A movement information processing system comprising: an information processing unit that creates movement information for each ID data based on the read ID data and reading position information.   The mobile information processing system according to claim 6, wherein the information processing unit creates entry / exit information for each ID data based on the ID data and reading position information.

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