JP2006160029A - Tire buried with rfid tag, wear detection system and wear detection method for tire and program for wear detection for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire, a wear detection system, a wear detection method and a wear detection program for it capable of automatically detecting the advancement state of wear of the tire, automatically detecting a position on the tire with ununiform wearing and easily further adopting wearing countermeasure (tire exchange or the like of vehicle) before dangerous level. <P>SOLUTION: A plurality of RFID tags 202 self-containing a memory for storing own tag ID for discriminating the own tag and an antenna are buried in the tire 201 and the RFID tag is damaged by abrasion. The degree of abrasion and the abrasion position are automatically detected by an abrasion determination unit 214 of a control device 212 by reduction of the RFID tag capable of being read by an RFID reader 211. Further, the detection timing is changed according to usage even in the same kind of tire even if the abrasion level is same and the detection timing can be changed by the abrasion position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to wear detection technology using an RFID tag (Radio Frequency IDentification TAG), and more particularly, a tire in which a plurality of RFID tags are embedded, and a wear detection system that detects a wear state of a tire using a signal from the RFID tag. And a wear detection method and a wear detection program therefor.

  Since vehicle tires such as automobiles are made of rubber, surface wear always occurs with traveling. As wear of the surface of the vehicle tire progresses, the number of grooves formed on the surface decreases, so that slipping or the like is likely to occur during traveling and the risk increases. For this reason, it is necessary to detect the progress of wear and to avoid danger by replacing the vehicle tire when wear exceeds a predetermined level.

  Conventionally, as a method of detecting wear on the surface of a vehicle tire, a slip line is embedded in the vehicle tire in advance, and a progress of wear is detected by visually reading that the embedded slip line appears due to wear. It has been known.

  Moreover, as a technique of installing RFID (Radio Frequency IDentification) on the tire, for example, those disclosed in Japanese Patent Application Laid-Open No. 2004-13449 (Patent Document 1), Japanese Patent Application Laid-Open No. 2002-264617 (Patent Document 2), and the like. There is.

  JP 2004-13449 A (Patent Document 1) includes tire manufacturing information (tyre quality, size information, manufacturing date), tire mounting information, tire usage time, usage distance, Write the latest information on inspection, replacement, maintenance, and / or repair, read this information, and use it for vehicle control (brake control, suspension control, steering control, stability control) and life management (replacement) Technology is disclosed.

  Japanese Patent Laid-Open No. 2002-264617 (Patent Document 2) discloses a technique in which an RFID tag incorporated in a tire is accurately read by providing an antenna over the entire circumference of the tire.

  In both of Patent Documents 1 and 2 above, it is assumed that the RFID tag itself is fixedly provided at a specific position of the object (tire) and is fixed at the same position without being destroyed during use. The information is written into and read from the RFID tag that is fixedly mounted, and the information is used to control various vehicles (brake control, suspension control, steering control, stability control) and tire replacement timing. It is used for management and repair management.

  Note that a mu chip (registered trademark) is known as a minute IC chip. This is an IC chip with the world's smallest communication function developed by Hitachi, Ltd., which has a micro size of 0.4 mm in length and width of about 170 μm, and 28 bits in it. Built-in memory and antenna built-in functions that can communicate with 2.4GHz radio waves (http://pc21.nikkeibp.co.jp/pc21/pc_09/c_02_0110.htm October 27, 2004 search (Non-patent document 1), http://www.hitachi.co.jp/New/cnews/030902a.html Search on October 27, 2004 (Non-patent document 2)). This chip is very small, especially thin and the price seems to gradually become cheaper in the future. By embedding it in banknotes, gift certificates, commuter passes, and various products, counterfeiting is prevented, various information is managed, and product distribution is managed. It is considered useful for such as.

JP 2004-13449 A JP 2002-264617 A http://pc21.nikkeibp.co.jp/pc21/pc_09/c_02_0110.htm (Search date; October 27, 2004) http://www.hitachi.co.jp/New/cnews/030902a.html (Search date; October 27, 2004)

  However, in the above-described conventional method for detecting the wear state of a wear target such as a tire using a slip line, the presence or absence of the slip line is checked by human eyes to avoid the danger due to wear. In some cases, it may be difficult to avoid dangers, such as check omissions.

  In addition, in the conventional method using the RFID tag as disclosed in Patent Documents 1 and 2 described above, it is fixedly provided at a specific position of the tire and continues to exist regardless of the progress of wear, and the progress of wear. Using RFID tags with fixed information that is irrelevant, it is possible to detect the level of tire wear, especially at the initial stage, that is, when the wear is not so much In particular, it was difficult to identify the part that was moving away (slipping).

  Therefore, the present invention can automatically detect the progress of wear of an object to be worn such as a tire, and can automatically detect a place on the wear object in which the wear is moving away (slipping). Tire (wear target), automatic wear detection system for tire, wear detection method, and wear detection program therefor The purpose is to provide.

  In order to achieve the above object, the present invention embeds a plurality of RFID tags in a wear object such as a tire, and the RFID tag (referred to as a wear detection tag (second RFID tag)) is damaged due to wear. By reducing the number of RFID tags that can be read by a reader, the degree of wear and the wear location are automatically detected.

  In addition, by cooperating with an RFID tag (referred to as an article identification tag (first RFID tag)) for identifying the wear object itself, even wear objects such as tires of the same type are used depending on the application. Even if the wear level is the same, the detection time can be changed, or the detection time can be changed depending on the wear location.

  More specifically, the tire of the present invention has at least one memory that stores a self-tag ID for identifying the self-tag at a depth position that disappears due to wear of the tire, and one or more antennas that incorporate data transmission / reception antennas. Wear detection RFID tags are embedded, and further, the wear detection RFID tags are embedded at different positions in the depth direction of the tire surface and at different positions in the width direction of the tire surface. It is characterized by being embedded in multiple numbers.

  Further, the tire has at least a memory for storing a self-tag ID for identifying the self-tag at a position where the tire does not disappear due to wear of the tire, and at least one RFID tag for identifying an article including an antenna for transmitting and receiving data. In addition, the RFID tag for identifying an article stores therein a risk notification level indicating that wear is a level at which the danger should be notified.

  The wear detection system of the present invention comprises a receiving means for receiving data from an RFID tag for wear detection embedded in a tire as described above or an RFID tag for detecting an article, and whether or not the receiving means has received data. It has a wear state determination unit that determines the wear state of the tire based on the received data, and further includes a danger level notification level determination unit that determines whether or not the wear state has exceeded the danger level notification level, and the wear state is dangerous. A warning notification means for notifying a warning when the level notification level is exceeded, a display unit for displaying a wear state, a notification device for notifying a warning or a suggestion of tire replacement, It has a one-side determination means for determining one-side slip by comparing with a one-side reference value held in advance, and further changes the risk notification level. I am characterized in that it has a risk notification level changing means that.

  The wear detection method of the present invention is a wear detection method for detecting the wear state of a tire by receiving data from an RFID tag for wear detection attached in the vicinity of a tire or an RFID tag for identifying an article. , A receiving step for receiving data from the RFID tag for wear detection embedded in the tire or an RFID tag for identifying an article, the presence or absence of reception in the receiving step, and the wear state of the tire based on the received data A wear state determination step for determining whether or not the wear state has exceeded the danger notification level, and a warning notification when the wear state exceeds the danger notification level A warning notification step, a step of displaying the wear state on the unit, and a notification or a tire replacement proposal to the notification device. Further comprising a step of determining a slippage by comparing the wear state with a preliminarily determined slippage reference value, and further changing the risk notification level. It is characterized by that.

  The program of the present invention is a wear detection program for causing a computer to function as each of the above means.

  The present invention automatically proposes and detects the wear state of an object to be worn such as a tire, that the wear state has exceeded the danger notification level, that one side slip has exceeded the threshold, and that the tire is replaced. You can be notified.

  In addition, since it is possible to change the monitoring level such as the detection timing depending on the degree of wear of the object to be worn and the variation in wear depending on the wear location, it becomes easy to take measures against wear before the danger level (e.g., vehicle tire replacement).

  Embodiments of an RFID tag presence position detection system (referred to as a wear detection system) and a wear detection method according to the present invention will be described below in detail with reference to the drawings, taking as an example the case where a wear target is a tire. .

(First embodiment)
FIG. 1 is a diagram for explaining a basic configuration of a wear detection system according to the present invention. FIG. 4A is a diagram showing a basic configuration of a wear detection system according to the present invention, and FIG. 4B is a diagram showing a configuration example of an RFID tag used in the present invention.

  The wear detection system according to this embodiment includes an antenna 103, an RFID reader 104, a control device 105, and a display unit 108, as shown in FIG. A unit 107 is included. The control device 105 has a computer configuration such as a CPU and a memory as hardware, and performs desired processing.

  In this wear detection system, an RFID tag 102 installed in a tire 101 that is an object to be worn is read by an RFID reader 104 via an antenna 103.

  The information read by the RFID reader 104 is transmitted to the control device 105, the information is set in the memory by the memory expansion unit 106 inside, and the wear state is judged by the wear judgment unit 107 (these functions are controlled). Needless to say, this is realized by executing a corresponding program using a CPU, a memory, etc. constituting the apparatus 105. The same applies to the embodiments described later), and the information is displayed on the display unit 108.

  As shown in FIG. 2B, the RFID tag 102 includes an antenna 1021, an electrode 1022, a circuit chip 1023 including a CPU and a memory. The RFID tag used in the present invention is required to be embedded in a small number of tires because it needs to be embedded in a small number of tires. For example, the antenna built-in disclosed in Non-Patent Document 1 and Non-Patent Document 2 described above is required. Muchip (registered trademark) can be used.

FIG. 2 is a diagram showing a specific configuration of the wear detection system of FIG.
In the tire 201 (corresponding to the tire 101 in FIG. 1), which is an object to be worn in this embodiment, as shown in FIG. 1, two types of RFID tags (RFID tags in FIG. 1), a wear detection tag 202 and an article identification tag 203 are used. Corresponding to the tag 102).

  The wear detection tag 202 has its own tag ID 207, tag type 208, and coordinate data 209 indicating the position embedded in the tire, and the article identification tag 203 has its own tag ID 204 and tag type 205.

  The own tag ID 204 and the own tag ID 207 are IDs for identifying the own tag.

  The tag type 205 and the tag type 208 have information indicating whether the self tag is a wear detection tag or an item identification tag. That is, in this example, the tag type 205 has information indicating that the own tag is an article identification tag, and the tag type 208 has information indicating that the own tag is an abrasion detection tag.

  The coordinate data 209 is coordinate data (x, y) indicating the position of the wear detection tag 202 embedded in the tire. x represents the distance from the center in the width direction of the tire, and y represents the embedding depth from the center of rotation of the tire.

  A plurality of wear detection tags 202 are embedded as illustrated in accordance with the depth of the surface of the tire to be worn and the distance from the center point in the width direction of the tire, and are embedded in a shallow portion as the wear of the tire progresses. It is sequentially destroyed from the wear detection tag.

  On the other hand, the article identification tag 203 is a tag installed for each wear object (tire) 201 (or a plurality of tires in the case of redundancy). Installed.

  In this configuration, when each RFID tag of the tire approaches the receivable distance of the antenna 210 (corresponding to the antenna 103 in FIG. 1) while the vehicle is running, the tire is connected to the RFID reader 211 (corresponding to the RFID reader 104 in FIG. 1). The information of all the tags is read and the information is transmitted to the control device 212 (corresponding to the control device 105 in FIG. 1).

  Information taken into the control device 212 is set in the memory by the memory development unit 213 (corresponding to the memory development unit 106 in FIG. 1), and the wear determination unit 214 (corresponding to the wear determination unit 107 in FIG. 1) is in a worn state. And the result is transmitted to the display unit 215 (corresponding to the display unit 108 in FIG. 1), and the display unit 215 edits and displays the transmitted information.

  FIG. 3 is a diagram for explaining the processing of the memory expansion unit 213 in the present embodiment.

  An article identification memory area 310 exists in the memory development unit 213, and the article identification memory area 310 has an article identification tag ID 311 and tag type 312 as article identification tag information, and wear as wear detection tag information. The detection tag memory area 313 has the number of wear detection tags detected by the RFID reader 211.

  Each wear detection tag memory area 313 has areas for wear detection tag ID 314, tag type 315, and tag coordinate data 316.

  Next, the flow of processing in the memory expansion unit 213 in this embodiment will be described with reference to FIG.

  First, when RFID tag information is transmitted from the RFID reader 211, the control device 212 clears the article identification memory area 310 in the memory development unit 213 (step ST301).

  Next, the RFID tag information transmitted from the RFID reader 211 is read (step ST302), and until all tag information is read (during step ST303: N), the following step ST304 is performed for each read tag information. , ST305, ST306.

  That is, the tag type is determined (step ST304), and in the case of an article identification tag, tag information is set in the article identification memory area 310 (step ST306).

  On the other hand, in the case of a wear detection tag, tag information is additionally set in the wear detection tag memory area 313 (step ST305). The above processing is performed for all the read tags, and when the above processing is completed for all the tags (step ST303: Y), the processing is terminated.

  FIG. 4 is a diagram for explaining the processing of the wear determination unit 214 in the present embodiment.

  The wear determination unit 214 reads the contents of all article identification memory areas in the memory development unit 213 one by one (step ST401). Tag IDs in all article identification memory areas are set in the memory of wear determination unit 214 (steps ST402 and ST403).

  The contents of the wear detection tag memory area in the entire article identification memory area are rearranged by the X coordinate (left and right positions on the tire surface) (step ST404). Those having the same X coordinate are further rearranged by the Y coordinate (depth at which the tag is embedded) (step ST405).

  As a result, the tag information (referred to as a wear state notification tag) embedded most shallowly for each right and left position (for each X coordinate) on the tire surface is transmitted to the display unit 215 (step ST406). In step ST407, display unit processing is performed.

  After performing the processing from step ST403 to step ST404 for all article identification memory areas (step ST402: Y), the processing is terminated. Tag information embedded most shallowly for each right and left position of the tire surface, that is, for each X coordinate, represents the wear state (abrasion progress state) of the tire surface.

FIG. 5 is a diagram illustrating an example of a memory state indicating a result of the above processing.
The wear detection tag information in the entire article identification memory area includes all the detected tag information. The information on the wear tags is rearranged by the above processing, that is, (a) the tires are rearranged in the left-right position (X coordinate) order, and (b) the same X coordinate tags are rearranged in the shallow embedding order.

  Thus, as shown in FIG. 5, the upper and lower columns indicate the left and right positions of the tire (in the figure, the uppermost row indicates the leftmost X coordinate 1 and the lowermost row indicates the rightmost X coordinate n), Among the same position (X coordinate), the information of the wear detection tag embedded most shallowly is arranged on the leftmost side.

FIG. 6 is a diagram for explaining an example of detecting the degree of wear.
Immediately after the tag information is read, the wear detection tag IDs 601, the X coordinates 602, and the Y coordinates 603 are arranged in a dispersed state as shown in FIG.

  After the rearrangement, as shown in FIG. 5B, the most shallowly embedded wear detection tags detected for each X coordinate (X1 to Xn) are arranged on the leftmost side. This is called a wear state notification tag 604.

  The Y coordinate “3” of the tag 65 with the deepest embedding in the wear state notification tag 604 (in this example, the tag whose wear detection tag ID is ID06) indicates that the wear is most advanced.

(Second embodiment)
Next, an embodiment of the RFID tag threshold value management and warning method according to the present invention will be described with reference to the drawings.

  FIG. 7 is a diagram for explaining a configuration of a wear detection system including a threshold management unit, a warning notification unit, and a notification unit according to the present embodiment. In the present embodiment, a threshold management unit 708 and a warning notification unit 709 are newly added to the configuration similar to that shown in FIG. 1 (the functions of these units are also executed using the CPU and memory that constitute the control device 705). And a notification device 711 are added.

  First, the outline of the wear detection system according to the present embodiment will be described. As shown in FIG. 7, an RFID tag 702 installed in a tire 701 that is a wear target is read by an RFID reader 704 through an antenna 703. .

  The information read by the RFID reader 704 is transmitted to the control device 705, the information is set in the memory by the memory development unit 706 in the inside thereof, the wear state is judged by the wear judgment unit 707, and the result is thresholded. When the value is read into the value management unit 708 and exceeds a predetermined threshold value, it is transmitted to the display unit 710 via the warning notification unit 709 and notified to the notification device 711.

  FIG. 8 is a diagram illustrating a specific example of installation and reading processing of an RFID tag for a wear target (tire) according to the present embodiment.

  As shown in the figure, the tire 801 (corresponding to the tire 701 in FIG. 7), which is an object to be worn in this embodiment, has two types of RFID tags (RFID tags in FIG. 7), a wear detection tag 802 and an article identification tag 803. Equivalent to the tag 702).

  The wear detection tag 802 has its own tag ID 807, tag type 808, and coordinate data 809 indicating the position embedded in the tire, and the article identification tag 803 has its own tag ID 804, tag type 805, and danger notification level 806. Yes. Based on the value of the danger notification level 806, a warning is given when the wear state exceeds a threshold value.

  The own tag ID 804 and the own tag ID 807 are IDs for identifying the own tag.

  The tag type 805 and the tag type 808 have information indicating whether the self tag is a wear detection tag or an article identification tag. That is, in this example, the tag type 805 has information indicating that the self tag is an article identification tag, and the tag type 808 has information indicating that the self tag is an abrasion detection tag.

  The coordinate data 809 is coordinate data (x, y) indicating the position of the wear detection tag 802 embedded in the tire. x represents the distance from the center in the width direction of the tire, and y represents the embedding depth from the center of rotation of the tire.

  A plurality of wear detection tags 802 are embedded as illustrated in accordance with the depth of the surface to be worn by the tire and the distance from the center point in the width direction of the tire, and are embedded in a shallow portion as the wear of the tire surface progresses. It is destroyed sequentially from the tag.

  On the other hand, the article identification tag 803 is a tag that is installed for each object to be worn (tire) 801 (a plurality may be used if redundant), and this tag is a predetermined position that is not destroyed by the progress of tire wear. Installed.

  In this configuration, when each RFID tag (corresponding to the RFID tag 702 in FIG. 7) of the tire approaches within the receivable distance of the antenna 810 (corresponding to the antenna 703 in FIG. 7), the RFID reader 811 (RFID reader 704 in FIG. 7). The information of all the tags in the tire is read, and the information is transmitted to the control device 812 (corresponding to the control device 705 in FIG. 7).

  Information taken in the control device 812 is set in the memory by a memory development unit 813 (corresponding to the memory development unit 706 in FIG. 7), and the wear determination unit 814 (corresponding to the wear determination unit 707 in FIG. 7) is in a worn state. Is compared with a preset threshold value by a threshold value management unit 815 (corresponding to the threshold value management unit 708 in FIG. 7).

  If the threshold value is exceeded, warning information is transmitted to the display unit 817 (corresponding to the display unit 710 in FIG. 7). The display unit 817 edits and displays the transmitted information, and a notification device 818 (see FIG. 7 is equivalent to the notification unit 711).

  FIG. 9 is a diagram for explaining processing of the memory expansion unit 813 in the present embodiment.

  An article identification memory area 910 exists in the memory expansion unit 813, and has an article identification tag ID 911, a tag type 912, and a risk notification level 913 as article identification tag information, and wear as information on the wear detection tag. There are detection tag memory areas 914 corresponding to the number of wear detection tags detected by the RFID reader. The wear detection tag memory area 914 has a wear detection tag ID 915, a tag type 916, and tag coordinate data 917.

  As shown in the flow in FIG. 9, when RFID tag information is transmitted from the RFID reader 811, the article identification memory area 910 is cleared (step ST901). Next, until the tag information is read (step ST902) and all tag information is read (during step ST903: N), the following steps ST904, ST905, and ST906 are performed on each read tag information.

  First, the tag type of the read tag information is determined (step ST904), and in the case of an article identification tag, the tag information is set in the article identification memory area 910 (step ST906).

  On the other hand, in the case of a wear detection tag, tag information is additionally set in the wear detection tag memory area 914 (step ST905). The above process is performed for all the read tags. If all tags have been read (step ST903: Y), the processing of the memory expansion unit 813 is terminated.

  FIG. 10 is a diagram for explaining the processing of the wear determination unit 814 in the present embodiment.

  As shown in the figure, first, the contents are read one by one from the all article identification memory area 910 in the memory development unit 813 (step ST1001). The article identification tag IDs 911 and the risk notification levels 913 in all the article identification memory areas 910 that have been read are set in the memory of the wear determination unit 814 (steps ST1002: N, ST1003).

  Next, (a) the data in the wear detection tag memory area 914 in the article identification memory area 910 is rearranged by the X coordinate value (the horizontal coordinate on the tire surface, that is, the coordinate position in the width direction) (step ST1004).

  Next, (b) those having the same X coordinate are further rearranged by the Y coordinate (the coordinate position in the depth direction in which the tag is embedded) (step ST1005). Thereafter, the threshold management unit is processed (step ST1006).

  The processing from step ST1003 to step ST1006 is performed for all the item identification memories, and when the processing is completed for all the item identification memories (step ST1002: Y), the processing of the wear determination unit 814 is terminated.

FIG. 11 is a diagram illustrating a memory state of the wear determination unit 814.
The wear detection tag in the entire article identification memory area includes all information of the detected tag. By rearranging these wear tags by the above processing, as shown in FIG. 11, the vertical rows indicate the left and right positions of the tire (the top row is the leftmost position and the bottom row is the rightmost position), and the left and right positions are Among the same items, information on the wear detection tag embedded most shallowly (wear state notification tag) is arranged on the leftmost side.

FIG. 12 is a diagram for explaining an example of detecting the degree of wear.
Immediately after the tag information is read, the wear detection tag ID 1201, the X coordinate 1202, and the Y coordinate 1203 are arranged in a dispersed state as shown in FIG.

  After the rearrangement, as shown in FIG. 5B, the shallowest embedded tags among the wear detection tags detected for each X coordinate are arranged on the leftmost side. This is referred to as a wear state notification tag 1204, and the Y coordinate “3” of the deepest embedded tag 1205 (in this example, the wear detection tag ID is ID06) is the most worn state (the degree of wear is the highest). “3”).

FIG. 13 is a diagram for explaining processing of the threshold management unit 815.
As shown in the figure, first, an article identification tag ID 804 and a risk notification level 806 are read as article identification tag information from the memory (see FIG. 11) of the wear determination unit 814 (see FIG. 9; step ST1301). The risk notification level 806 is a threshold value indicating whether or not to notify the notification device 818.

  Further, from the memory of the wear determination unit 814, as wear state notification tag information (see FIG. 11), the wear detection tag ID, the X coordinate (left and right position information in which the tag is embedded), and the Y coordinate (depth information in which the tag is embedded). ) (See FIG. 9; step ST1302).

  Next, the Y coordinate which is depth information is converted into a numerical value (referred to as a depth level) that can be compared with the danger notification level (step ST1303).

  Next, the risk level notification level and the depth level, which are threshold values, are compared (step ST1304). If the depth level is deeper than the risk level notification level (step ST1304: Y), a warning is given. The notification unit process is executed (step ST1305), and the process of the threshold management unit 815 is terminated.

  When the tire that is an object to be worn has a shallower value than the danger notification level (step ST1304: N), the process of the threshold management unit 815 is terminated.

FIG. 14 is a diagram illustrating an example of notification to the notification device based on the degree of wear.
As in the example of FIG. 5A, in the case of the safety state from the initial state, the wear detection tag 1, the wear detection tag 2, and the wear detection tag 3 are detected. Of these, the wear detection tag 3 has the shallowest embedding depth of the tag, so this wear detection tag 3 becomes a wear state notification tag (a tag for determining the wear state).

  In this state, the depth level of the wear detection tag 3 is 0 with respect to the danger notification level 10 of the article identification tag, and since the wear has not reached the danger level, the notification process to the notification device 818 is not performed. .

  However, in the danger notification state after use as shown in FIG. 5B, only the wear detection tag 1 is detected, and this wear detection tag 1 becomes the wear state notification tag. In this state, the depth level of the wear detection tag 1 is 20 with respect to the danger notification level 10 of the article identification tag, and since the wear exceeds the danger level, a notification process to the notification device 818 is performed.

FIG. 15 is a diagram for explaining the processing of the warning notification unit 816.
As shown in the figure, first, an article identification tag ID and a risk notification level are read as article identification tag information from the memory of the threshold management unit 815 (step ST1501).

  Further, from the memory of the threshold management unit 815, the wear detection tag ID, the X coordinate (left and right position information with the tag embedded), and the Y coordinate (depth information with the tag embedded) as wear state notification tag information. The level is read (step ST1502).

  Next, information transmitted to display unit 817 is edited (step ST1503), and display unit processing is executed (step ST1504). Further, after notifying the notification device 818 (step ST1505), the processing of the warning notification unit 816 is terminated.

(Third embodiment)
Next, an embodiment of a tire replacement proposing device using the RFID tag wear detection tag according to the present invention will be described with reference to the drawings.

  FIG. 16 is a diagram for explaining a configuration of a wear detection system having a tire replacement proposing unit according to this embodiment. In the present embodiment, the tire replacement proposal unit 1608 and the proposal notification unit 1609 (the functions of these units are also dealt with by using the CPU and the memory constituting the control device 1605 as described above with respect to the configuration similar to FIG. And a notification device 1611 are added.

  The outline of the wear detection system including the tire replacement proposal unit according to the present embodiment will be described. First, as shown in FIG. 16, an RFID tag 1602 installed in a tire 1601 that is a wear target is connected via an antenna 1603. Read by the RFID reader 1604.

  The information read by the RFID reader 1604 is transmitted to the control device 1605, the information is set in the memory by the memory development unit 1606 inside it, the wear determination unit 1607 determines the wear state, and the result is a tire replacement proposal. The data is read into the unit 1608 and it is determined whether or not it is time to replace the tire. If the tire should be replaced, it is transmitted to the display unit 1610 via the proposal notification unit 1609 and notified to the notification device 1611.

  FIG. 17 is a diagram illustrating a specific example of a wear detection system including a tire replacement proposal unit according to the present embodiment.

  In the tire 1701 (corresponding to the tire 1601 in FIG. 16), which is an object to be worn in the present embodiment, as shown in FIG. 16, two types of RFID tags (RFID tags in FIG. 16), a wear detection tag 1702 and an item identification tag 1702 are provided. Equivalent to the tag 1602).

  The wear detection tag 1702 has its own tag ID 1707, tag type 1708, and coordinate data 1709 indicating the position embedded in the tire, and the article identification tag 1703 has its own tag ID 1704, tag type 1705, and danger notification level 1706. Yes. Based on the value of the danger notification level 1706, a warning is given when the wear state exceeds a threshold value.

  The own tag ID 1704 and the own tag ID 1707 are IDs for identifying the own tag.

  The tag type 1705 and the tag type 1708 have information indicating whether the self tag is a wear detection tag or an item identification tag. That is, in this example, the tag type 1705 has information indicating that the self tag is an article identification tag, and the tag type 1708 has information indicating that the self tag is an abrasion detection tag.

  The coordinate data 1709 is coordinate data (x, y) indicating the position of the wear detection tag 1702 embedded in the tire. x represents the distance from the center in the width direction of the tire, and y represents the embedding depth from the center of rotation of the tire.

  A plurality of wear detection tags 1702 are embedded according to the depth of the surface to be worn by the tire and the distance from the center point in the width direction of the tire, and are embedded in a shallow portion as the wear of the tire surface progresses. It is destroyed sequentially from the tag.

  On the other hand, one article identification tag 1703 is installed for each wear target (tire) 1701 (or a plurality of tags if redundant), and this tag is a predetermined position that is not destroyed by the progress of tire wear. Installed.

  In this configuration, when each RFID tag of the tire approaches within the receivable distance of the antenna 1710, information of all the tags in the tire is read into the RFID reader 1711, and the information is transmitted to the control unit 1712 (the control device 1605 in FIG. 16). Equivalent).

  Information taken in the control device 1712 is set in the memory by a memory development unit 1713 (corresponding to the memory development unit 1606 in FIG. 16), and the wear determination unit 1714 (corresponding to the wear determination unit 1607 in FIG. 16). The wear state is determined and compared with a preset threshold value in a tire replacement proposal unit 1715 (corresponding to the R tire replacement proposal unit 1608 in FIG. 16). When the threshold value is exceeded, proposal information is displayed. A proposal notification is transmitted to a unit 1717 (corresponding to the display unit 1610 in FIG. 16) and a notification device 1718 (corresponding to the notification device 1611 in FIG. 16).

FIG. 18 is a diagram for explaining the processing of the memory development unit 1713.
An article identification memory area 1810 exists in the memory development unit 1713, and has an article identification tag ID 1811, a tag type 1812, and a risk notification level 1813 as information on the article identification tag, and wear as information on the wear detection tag. There are as many detection tag memory areas 1814 as the number of wear detection tags detected by the RFID reader.

  The wear detection tag memory area 1814 has a wear detection tag ID 1815, a tag type 1816, and tag coordinate data 1817.

  In this configuration, when RFID tag information is transmitted from the RFID reader 1711, the article identification memory area 1810 is cleared (step ST1801).

  Next, the tag information is read (step ST1802), and the following steps ST1804, ST1805, and ST1806 are performed until all tag information is read (in the case of step ST1803: N).

  The tag type is determined (step ST1804). If the tag is an article identification tag, tag information is set in the article identification memory area 1810 (step ST1806). If the tag is an abrasion detection tag, the tag information is stored in the abrasion detection tag memory area 1814. An additional set is made (step ST1805). After performing the above processing for all the tag information read (step ST1803: Y), the processing of the memory development unit 1713 is terminated.

FIG. 19 is a diagram for explaining the processing of the wear determination unit 1714.
As shown in the figure, wear determination unit 1714 first reads information in all article identification memory areas 1810 in memory development unit 1713 one by one (step ST1901).

  Next, tag ID 1811 and danger notification level 1813 in article identification memory area 1810 are set in the memory of wear determination unit 1714 (step ST1902: N, ST1903).

  Next, the information in the wear detection tag memory area 1814 in the article identification memory area 1810 is rearranged by the X coordinate (the left and right positions on the tire surface) (step ST1904).

  Next, those having the same X coordinate are further rearranged by the Y coordinate (depth at which the tag is embedded), and written in the memory of the wear determination unit 1714 (step ST1905). Thereafter, the tire replacement proposal unit 1715 is processed (step ST1906).

  The processing from step ST1903 to step ST1906 is performed for the information of all the item identification memory areas 1810. When the processing for the information of all the item identification memory areas 1810 is completed (step ST1902: Y), the processing of the wear determination unit 1714 is performed. Exit.

FIG. 20 is a diagram illustrating an example of a memory state indicating a result of the above processing.
The wear detection tag in the entire article identification memory includes all information of the detected tag. As shown in FIG. 20, the wear tags are rearranged by the above processing, that is, (a) the tires are rearranged in the left-right position (X coordinate) order, and then (b) the same X coordinate tags are rearranged in the shallow embedding order. The upper and lower rows indicate the left and right positions of the tire (in the figure, the uppermost row indicates the X coordinate 1 and the lowermost row indicates the X coordinate n). The wear detection tag information is arranged on the leftmost side.

FIG. 21 is a diagram for explaining an example of detecting the degree of wear.
Immediately after the tag information is read, the wear detection tag ID 2101, the X coordinate 2102, and the Y coordinate 2103 are lined apart as shown in FIG.

  After the rearrangement, as shown in FIG. 5B, the most shallowly embedded wear detection tags detected for each X coordinate (X1 to Xn) are arranged on the leftmost side. This is called a wear state notification tag 2104.

  The Y coordinate “3” of the tag 2105 with the deepest embedding among the wear state notification tags 2104 (in this example, the tag whose wear detection tag ID is ID06) indicates that the wear is most advanced.

FIG. 22 is a diagram for explaining the processing of the tire replacement proposal unit 1715.
As shown in the figure, the tire replacement proposing unit 1715 first reads the article identification tag ID and the risk notification level as article identification tag information from the memory (see FIG. 20) of the wear determination unit 1714 (step ST2201).

  Further, from the memory of the wear determination unit 1714, the wear detection tag ID, X coordinate (left and right position information in which the tag is embedded), and Y coordinate (depth information in which the tag is embedded) of the wear state notification tag information (see FIG. 20). ) Is read (step ST2202).

  Next, the Y coordinate which is depth information is converted into a numerical value (referred to as a depth level) that can be compared with the danger notification level (step ST2203). Next, the tire replacement time definition table is searched using the item identification tag ID of the item identification tag information read in step ST2201 as a search key (step ST2204).

  As shown in the figure, the tire replacement time definition table is composed of “article identification tag ID” and “level increase / decrease value” and “notification level” for changing the risk notification level predetermined for each article identification tag ID. Has been.

  The “level increase / decrease value” of the record of the relevant tire replacement time definition table and the “risk level notification level” of the article identification tag information read in step ST2201 are calculated (added), and the “notification level” of the tire replacement time definition table is calculated. Is set to a value (step ST2205).

  Normally, the “Danger Level Notification Level” is a threshold value for warning when the wear state of an article is in danger, but by adding a “level increase / decrease value” to this value, It can be used for various applications by changing the threshold value.

  When the depth level of the wear state notification information tag (representing the actual wear state) is compared with the notification level of the tire replacement time definition table (step ST2206), and the depth level is a deeper value than the notification level Then, a proposal notification unit process is executed (step ST2207).

  When the level increase / decrease value is negative, the notification level is reached earlier than the danger level notification level, so the proposal notification time is earlier. If the depth level is shallower than the notification level, the process ends as it is. For example, in the case of a vehicle on which a VIP or the like gets on, a proposal for tire replacement can be notified earlier than usual by setting the level increase / decrease value to an appropriate negative value.

  As shown in FIG. 22, the level increase / decrease value in the tire replacement time definition table can be added / changed / deleted by screen operation of an external medium or terminal.

FIG. 23 is a diagram illustrating a tire replacement notification example due to wear.
In this example, an article identification tag 2302 is installed on the tire 2301 before being worn. The item identification tag 2302 has an item identification tag ID 2303 of “ID010” and a risk notification level 2304 having a value of “10”.

  Normally, when the wear detection tag 2305 having the same depth level as the danger notification level is damaged during wear and is not detected by the RFID reader, the danger notification is made. The table of the same article identification tag ID (ID010 in this example) in the tire replacement time definition table 2308 is searched, and the risk notification level 2309 (value is “−5”) by the level increase / decrease value 2310 (value is “−5”). 10 ") is corrected (10-5 = 5) to the notification level 2311 (value is" 5 ").

  When the wear detection tag having the same notification level (value is “5”) is damaged due to wear due to tire use, and the wear detection tag cannot be detected, the proposal notification unit processing 2312 is executed.

FIG. 24 is a diagram for explaining the proposal notification unit process.
The proposal notification unit 1716 reads the article identification tag ID and the danger level notification level of the article identification tag information from the memory of the tire replacement proposal unit 1715 (step ST2401).

  Further, the wear detection tag ID, the X coordinate (left and right position information in which the tag is embedded), and the Y coordinate (depth information in which the tag is embedded) depth levels of the wear state notification tag information are stored from the memory of the tire replacement proposal unit 1715. Read (step ST2402).

  Next, the information transmitted to the display unit 1717 is edited (step ST2403), and a display unit process is performed (step ST2404). Furthermore, notification to notification device 1718 is performed (step ST2405). In this way, it is possible to prevent the danger in advance by executing the proposal notification unit process (notification of tire replacement) earlier than usual and replacing the tire earlier. This is effective in the case of a VIP exclusive vehicle as will be described later.

  FIG. 25 and FIG. 26 are diagrams for explaining an application example using the tire replacement proposal unit.

  Comparing a VIP exclusive vehicle with a normal passenger vehicle, it is necessary to give priority to safety in the VIP exclusive vehicle. Therefore, it is necessary to make a notification for encouraging wheel replacement at an early stage of wear by reducing the notification level.

  FIG. 25 is a diagram showing an example in which a difference is provided between notification levels in a VIP exclusive vehicle and a normal passenger vehicle.

  This figure shows a case in which the danger level is “10” for both general passenger cars and VIP exclusive cars. For general passenger cars, the level increase / decrease value is “0”, so the notification level remains “10”, which is the same as the danger notification level. However, for VIP exclusive vehicles, the level increase / decrease value is set to “−3”. Is changed to “7” (10−3 = 7), and a tire replacement proposal is notified early.

  The above application example is an example in which safety is emphasized over economy, but conversely, when emphasis is placed on economy rather than safety, the level increase / decrease value is set to a positive value and the notification level (risk level notification level) It is also possible to delay the tire replacement time by increasing the (+ level increase / decrease value).

  The above example is an example in which notification is made at the same time for all front wheels and rear wheels in the same vehicle, but the drive wheels are more likely to wear out, so the drive wheels (rear wheels in the case of rear wheel drive) It is also effective to prompt the exchange early.

  FIG. 26 shows an example in which the rotation of a wheel is encouraged by notifying a tire replacement proposal at an early stage of wear of a heavily worn drive wheel. In the case of a rear-wheel drive vehicle, the level is increased or decreased with respect to the front wheel. The value “0” (notification level “10”) and the level increase / decrease value “−5” (notification level “5”) for the rear wheels are shown to prompt the early rotation of the wheel.

(Fourth embodiment)
Next, an embodiment of a wear detection system having a one-side slip notification unit using an RFID tag wear detection tag according to the present invention will be described in detail with reference to the drawings.

  FIG. 27 is a diagram for explaining a configuration of a wear detection system having a tire replacement proposal unit according to the present embodiment. In the present embodiment, a one-side determination unit 2708, one-side notification unit 2709, and a notification device 2711 are added to the configuration similar to that in FIG.

  The outline of the wear detection system including the one-side slip notification unit according to the present embodiment will be described. First, as shown in FIG. 27, an RFID tag 2702 installed in a tire 2701 as a wear target is attached to an antenna 2703. Via an RFID reader 2704.

  The information read by the RFID reader 2704 is transmitted to the control device 2705, the information is set in the memory by the memory development unit 2706, and the wear state is judged by the wear judgment unit 2707. It is read into the determination unit 2708 to determine whether or not the tire has undergone an extreme side slip. When the tire has a side slip, it is transmitted to the display unit 2710 via the side slip notification unit 2709 and notified to the notification device 2711. .

  FIG. 28 is a diagram illustrating a specific example of the wear detection system including the one-side slip determination unit according to the present embodiment.

  In the tire 2801 (corresponding to the tire 2701 in FIG. 27) which is an object to be worn in this embodiment, as shown in FIG. 27, two types of RFID tags (RFID tags in FIG. 27), a wear detection tag 2802 and an article identification tag 2803 are used. Tag 2702).

  The wear detection tag 2802 has its own tag ID 2807, tag type 2808, and coordinate data 2809 indicating the position embedded in the tire, and the article identification tag 2803 has its own tag ID 2804 and tag type 2805.

  The own tag ID 2804 and the own tag ID 2807 are IDs for identifying the own tag.

  The tag type 2805 and the tag type 2808 have information indicating whether the own tag is a wear detection tag or an item identification tag. That is, in this example, the tag type 2805 has information indicating that the own tag is an article identification tag, and the tag type 2808 has information indicating that the own tag is an abrasion detection tag.

  The coordinate data 2809 is coordinate data (x, y) indicating the position of the wear detection tag 2802 embedded in the tire. x represents the distance from the center in the width direction of the tire, and y represents the embedding depth from the center of rotation of the tire.

  A plurality of wear detection tags 2802 are embedded as shown in accordance with the depth of the surface of the tire to be worn and the distance from the center point in the width direction of the tire, and are embedded in a shallow portion as the wear of the tire surface progresses. It is destroyed sequentially from the tag.

  On the other hand, the article identification tag 2803 is a tag that is installed for each wear target (tire) 2801 (or a plurality of tags if redundant), and this tag is a predetermined position that is not destroyed by the progress of tire wear. Installed.

  In this configuration, when each RFID tag of the tire approaches the receivable distance of the antenna 2810 (corresponding to the antenna 2703 in FIG. 27), all the tags in the tire are connected to the RFID reader 2811 (corresponding to the RFID reader 2704 in FIG. 27). And the information is transmitted to the control device 2812 (corresponding to the control device 2705 in FIG. 27).

  Information taken in the control device 2812 is set in the memory by the memory development unit 2813, the wear state is determined by the wear determination unit 2814, and is compared with a threshold value set in advance by the one-side determination unit 2815. If the threshold value is exceeded, for example, proposal information such as exchange or rotation is transmitted to the display unit 2818 and a one-side notification is transmitted to the notification device 2819.

FIG. 29 is a diagram for explaining the processing of the memory development unit 2813.
An article identification memory area 2910 exists in the memory development unit 2813, and has an article identification tag ID 2911 and a tag type 2912 as article identification tag information in the article identification memory area 2910, and wear detection as wear detection tag information. There are tag memory areas 2913 corresponding to the number of wear detection tags detected by the RFID reader 2811.

  The wear detection tag memory area 2913 has a wear detection tag ID 2914, a tag type 2915, and tag coordinate data 2916.

  When the RFID tag information is transmitted from the RFID reader 2811, the memory expansion unit 2813 clears the article identification memory area 2910 (step ST2901).

  Next, tag information is read (step ST2902), and the following steps ST2904, ST2905, and ST2906 are performed until all tag information is read (during step ST2903: N).

  If all the tag information has not been read (ST2903: N), the tag type is determined (step ST2904), and in the case of an article identification tag, the tag information is set in the article identification memory area 2910 (step ST2906), and the wear detection tag. In this case, tag information is additionally set in the wear detection tag memory area 2913 (step ST2905).

  After performing the processing of steps ST2904, ST2905, and ST2906 for all the read tags (step ST2903: Y), the processing of the memory development unit 2813 is terminated.

FIG. 30 is a diagram for explaining the processing of the wear determination unit 2814.
First, wear determination unit 2814 reads information in all article identification memory area 2910 in memory development unit 2813 one by one (step ST3001).

  Article identification tag ID 2911 in article identification memory area 2910 is set in the memory of wear determination unit 2814 (step ST3003).

  Next, the information in the wear detection tag memory area 2913 in the article identification memory area 2910 is rearranged in the order of the X coordinate (the left and right positions on the tire surface) (step ST3004). Next, those having the same X coordinate are further rearranged by the Y coordinate (depth at which the tag is embedded) (step ST3005).

  Thereafter, a one-side slip determination unit process is performed (step ST3006). The processing from step ST3003 to step ST3006 is performed for the information in all the item identification memory areas 2910. If the information in all the item identification memory areas 2910 has been read (step ST3002: Y), the processing of the wear determination unit 2814 is performed. finish.

FIG. 31 is a diagram illustrating an example of a memory state indicating a result of the above processing.
The wear detection tag in the entire article identification memory area 2910 includes all the detected tag information. As shown in FIG. 31, the wear tags are rearranged by the above processing, that is, (a) the tires are rearranged in the left-right position (X coordinate) order, and then (b) the same X coordinate tags are rearranged in the shallow embedding order. The upper and lower rows indicate the left and right positions of the tire (in the figure, the uppermost row indicates the X coordinate 1 and the lowermost row indicates the X coordinate n). The wear detection tag information (wear state notification tag) is arranged on the leftmost side.

FIG. 32 is a diagram for explaining an example of detecting the degree of wear.
Immediately after the tag information is read, the wear detection tag IDs 3201, the X coordinate 3202, and the Y coordinate 3203 are arranged in a dispersed state.

  After rearrangement, the most shallowly embedded wear detection tags detected for each X coordinate are arranged on the leftmost side. This is called a wear state notification tag 3204, and among these, the deepest embedded tag 3205 (in this example, the wear detection tag ID is ID06), the Y coordinate “3” is the most worn state. Show.

FIG. 33 is a diagram for explaining the processing of the one-side slip determination unit.
Article identification tag ID is read from the memory (see FIG. 31) of wear determination unit 2815 as article identification tag information (step ST3301).

  Further, the wear detection tag ID, the X coordinate (left and right position information in which the tag is embedded), and the Y coordinate (depth information in which the tag is embedded) from the wear state notification tag information (see FIG. 31) from the memory of the wear determination unit 2815. Is read (step ST3302).

  Next, the Y coordinate as depth information is converted into a numerical value (referred to as a depth level) that can be compared with the danger notification level (step ST3303).

  Next, using the item identification tag ID of the item identification tag information read in step ST3301 as a search key, the one-side determination table is searched (step ST3304).

  Next, a difference in depth level of all wear detection tags included in the article is calculated (step ST3305), and compared with the one-side determination value of the corresponding one-side determination table record (step ST3306).

  As a result of the comparison, if the difference in depth level is larger than the one side reference value (step ST3306: Y), it is determined that the variation in wear is larger than the reference value, and one side notification unit processing is performed (step ST3307).

  As a result of the comparison, if the difference in depth level is less than the reference value for the one side (step ST3306: Y), it is determined that the variation in wear is smaller than the reference, and the one side determination unit is not performed without performing the one side notification unit processing. The process of 2815 is terminated.

  Note that the one-side reference value of the one-side determination table can be added / changed / deleted by an external medium or screen operation.

FIG. 34 is a diagram for explaining a side slip determination example.
If the one side slip is within the allowable range, data having the same ID as the article identification tag ID 3402 in the one side judgment unit 3401 is searched in the one side judgment table 3403 as shown in FIG. A reference value 3404 is obtained (one-side slip reference value in this example is “15”).

  Next, the difference in the depth level of the wear detection tag in the wear state notification tag is obtained (the value in this example is “10”). Therefore, in this case, since the difference in depth level is smaller than the one-side slip reference value, it is determined as an allowable value.

  On the other hand, if the one-side slip is outside the allowable range, as shown in FIG. 2B, the data having the same ID as the article identification tag ID 3406 in the one-side determination unit 3405 is searched in the one-side determination table 3407. A one-side slip reference value 3408 is obtained (the one-side slip reference value in this example is “15”).

  Next, the difference in the depth level of the wear detection tag in the wear state notification tag is obtained (the value in this example is “20”). Therefore, in this case, since the difference in depth level is larger than the one-side reference value, one-side notification is sent to the one-side notification unit 3409.

FIG. 35 is a diagram for explaining the processing of the one-side notification unit 2816.
The article identification tag ID, the one-side reference value, and the depth level difference of the wear state notification information tag are read from the memory of the one-side determination unit (step ST3501).

  Next, the information transmitted to the display unit is edited (step ST3502), display unit processing is executed (step ST3503), and the information is displayed on the display unit 2818. Further, notification is made to the notification device 2819 (step ST3504).

  FIG. 36 is a diagram illustrating an application example of the wear detection system when the tire slippage notification unit 2816 is used. In this application example, the difference in the wear depth level between the central portion and the outer portion of the tire is 20−5 = 15, and the outer portion is significantly worn beyond the reference value “10” compared to the central portion. Therefore, the notification device is notified.

  As described above, the functions of all the units performed by the control device in each of the above embodiments are realized by executing a program corresponding to the function of each unit using the CPU and the memory constituting the control device.

  In the above embodiment, the wear detection tag is provided with coordinate data. However, the correspondence relationship between the wear detection tag ID and the coordinates in which the wear detection tag is embedded is held on the control device side. In this case, the wear detection tag need not have coordinate data.

  The program corresponding to the function of each unit is installed via a computer-readable recording medium such as a CD-ROM, FD, or DVD, or downloaded and installed via a network such as the Internet to control the control device. And the corresponding function is realized by being executed by the CPU.

It is a figure for demonstrating the basic composition of the wear detection system which concerns on a 1st Example of this application. It is a figure which shows the specific structure of the wear detection system which concerns on a 1st Example. It is a figure for demonstrating the process of the memory expansion | deployment unit which concerns on a 1st Example. It is a figure for demonstrating the process of the abrasion determination unit which concerns on a 1st Example. It is a figure which shows an example of the memory state which concerns on a 1st Example. It is a figure for demonstrating an example which detects the wear degree which concerns on a 1st Example. It is a figure for demonstrating the structure of the wear detection system containing the threshold value management unit which concerns on this-application 2nd Example, a warning notification unit, and a notification unit. It is a figure which shows the specific example of installation of the RFID tag with respect to the abrasion target object (tire) which concerns on a 2nd Example, and a reading process. It is a figure for demonstrating the process of the memory expansion | deployment unit which concerns on a 2nd Example. It is a figure for demonstrating the process of the abrasion determination unit which concerns on a 2nd Example. It is a figure which shows the memory state of the abrasion determination unit which concerns on a 2nd Example. It is a figure for demonstrating an example which detects the wear degree which concerns on a 2nd Example. It is a figure for demonstrating the process of the threshold value management unit which concerns on a 2nd Example. It is a figure which shows the example of notification to the notification apparatus by the abrasion degree which concerns on a 2nd Example. It is a figure for demonstrating the process of the warning notification unit 816 which concerns on a 2nd Example. It is a figure for demonstrating the structure of the wear detection system which has a tire replacement proposal unit which concerns on a 3rd Example of this application. It is a figure which shows the specific example of the abrasion detection system containing the tire replacement proposal unit which concerns on a 3rd Example. It is a figure for demonstrating the process of the memory expansion | deployment unit which concerns on a 3rd Example. It is a figure for demonstrating the process of the abrasion determination unit which concerns on a 3rd Example. It is a figure which shows an example of the memory state which concerns on a 3rd Example. It is a figure for demonstrating an example which detects the wear degree which concerns on a 3rd Example. It is a figure for demonstrating the process of the tire replacement proposal unit 1715 which concerns on a 3rd Example. It is a figure which shows the tire replacement notification example by abrasion which concerns on a 3rd Example. It is a figure for demonstrating the proposal notification unit process which concerns on a 3rd Example. It is a figure which shows the example which provided the difference in the notification level in the VIP exclusive vehicle which concerns on a 3rd Example, and a normal passenger car. It is a figure which shows the example which accelerates | stimulates rotation of a wheel by notifying the proposal of tire replacement at the early stage of wear of the drive wheel with heavy wear which concerns on a 3rd Example. It is a figure for demonstrating the structure of the abrasion detection system which has a tire replacement proposal unit which concerns on a 4th Example. It is a figure which shows the specific example of the abrasion detection system containing the one-side slip determination unit which concerns on a 4th Example. It is a figure for demonstrating the process of the memory expansion | deployment unit which concerns on a 4th Example. It is a figure for demonstrating the process of the abrasion determination unit which concerns on a 4th Example. It is a figure which shows an example of the memory state which concerns on a 4th Example. It is a figure for demonstrating an example which detects the wear degree which concerns on a 4th Example. It is a figure for demonstrating the process of the one-side slip determination unit which concerns on a 4th Example. It is a figure for demonstrating the side slip determination example which concerns on a 4th Example. It is a figure for demonstrating the process of the single slip notification unit which concerns on a 4th Example. It is a figure which shows the application example of the wear detection system at the time of using the tire slip notification unit which concerns on a 4th Example.

Explanation of symbols

101, 201, 701, 801, 1601, 1701, 2301, 2701, 2801: Wear object (tire)
102, 702, 1602, 2702: RFID tags 202, 802, 1702, 2802: Wear detection tags 203, 803, 1703, 2302, 2803: Article identification tags 103, 210, 703, 810, 1603, 1710, 2703, 2810: Antennas 104, 211, 704, 811, 1604, 1711, 2704, 2811: RFID readers 105, 212, 705, 812, 1605, 1712, 2705, 2812: control devices 106, 213, 706, 813, 1606, 1713, 2706 , 2813: Memory expansion unit 107, 214, 707, 814, 1607, 1714, 2707, 2814: Wear determination unit 708, 815: Threshold management unit 709, 816: Warning notification unit 1608, 17 15: Tire replacement proposal unit 1609, 1716: Proposal notification unit 2708, 2815: One-slip determination unit 2709, 2816: One-slip notification unit 108, 215, 710, 817, 1610, 1717, 2710, 2818: Display unit 711, 818 , 1611, 1718, 2711, 2819: Notification device 1201: Antenna 1202: Electrode 1203: Circuit chip (memory, CPU, etc.)

Claims (14)

  A memory storing at least a self tag ID for identifying the self tag and at least one wear detection RFID tag having a built-in antenna for transmitting and receiving data are embedded at a depth where the tire wears out. A tire characterized by that. The tire according to claim 1, wherein
A plurality of the RFID tags for detecting wear are embedded at different positions in the depth direction of the tire surface. The tire according to claim 1 or 2,
A plurality of RFID tags for detecting wear are embedded in different positions in the width direction of the tire surface. The tire according to any one of claims 1 to 3, further comprising:
At least one memory for storing the tag ID for identifying the tag and at least one RFID tag for identifying an article including an antenna for transmitting and receiving data is embedded in a position where the tire does not disappear due to wear of the tire. A characteristic tire. The tire according to claim 4, wherein
The RFID tag for identifying an article further stores a risk notification level indicating that wear is a level at which danger should be notified.   Data from the RFID tag for wear detection embedded in the tire according to any one of claims 1 to 5, or the RFID tag for identifying an article embedded in the tire according to claim 4 or 5, A wear detection system comprising: a receiving means for receiving; and a wear state determining means for determining a wear state of a tire based on presence / absence of reception by the receiving means and received data. The wear detection system of claim 6, further comprising:
A risk notification level determining means for determining whether or not the wear state exceeds the risk notification level, a warning notification means for notifying when the wear state exceeds the risk notification level, and a wear state are displayed. A wear detection system comprising a display unit for notification and a notification device for notifying of a warning or a tire replacement proposal. The wear detection system according to claim 6 or 7, further comprising:
A wear detection system comprising a one-side slip judging means for judging one-side slip by comparing a wear state with a one-side slip reference value held in advance. The wear detection system according to any of claims 6 to 8, further comprising:
A wear detection system comprising a risk notification level changing means for changing the risk notification level. A wear detection method for detecting the wear state of a tire by receiving data from an RFID tag attached in the vicinity of the tire,
Data from the RFID tag for wear detection embedded in the tire according to any one of claims 1 to 5, or the RFID tag for identifying an article embedded in the tire according to claim 4 or 5, A wear detecting method comprising: a receiving step for receiving; and a wear state determining step for determining a wear state of a tire based on presence / absence of reception in the receiving step and received data. The wear detection method according to claim 10, further comprising:
A risk level determination step for determining whether or not a wear state exceeds the risk notification level, a warning notification step for notifying a warning when the wear state exceeds the risk notification level, and a wear state for the unit. A wear detection method comprising: a step of displaying; and a step of notifying a notification or a tire replacement proposal to a notification device. The wear detection method according to claim 10 or 11, further comprising:
A wear detection method comprising a one-side slip determination step for determining one-side slip by comparing a wear state with a one-side reference value that is held in advance. The wear detection method according to any one of claims 10 to 12, further comprising:
A wear detection method comprising the step of changing the risk notification level.   A wear detection program for causing a computer to function as each means in the wear detection system according to any one of claims 6 to 9.

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