JP2005345322A - Wear status detection system for wear article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect the wear status of an object to be worn with high precision free of influence from changes in weather conditions and detection conditions. <P>SOLUTION: Wireless tags 31 to 33, as transmitting means, are embedded at different depth in a tread section 22 forming a groove 21 of a tire 20 which is the object to be worn. Radio waves are transmitted from a query machine 41 to the tags 31 to 33. Data indicating either ID codes (ID1) to (ID3) from either tags 31 to 33 which received the radio waves are received by the query machine 41. When only the ID code (ID3) is received, for example, it is determined that wear in the groove 21 of the tire 20 is large and a limit is reached by allowing a processing unit 42 to perform data processing, and a tire groove warning is notified by a tire groove warning display section 43 by allowing the processing unit 42 to output a tire groove warning signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wear state detection system for a wear product, for example, a wear state detection system for a wear product that automatically detects a groove remaining amount of a vehicle tire and warns a driver.

  Conventionally, the inspection of the wear condition of the tire groove is based on, for example, a slip sign (formed in the tire groove and used as an index for knowing the wear condition of the tire groove) formed in the tire in advance. This is done by visually checking whether or not they are worn. In addition, a dedicated gauge for measuring the tire groove is used to check the wear condition of the tire groove by measuring the depth of the tire groove. In addition, all of these operations are performed manually.

  By the way, in such a tire groove inspection, since it is necessary to always carry out after stopping the automobile, there is a problem that it takes time to inspect the tire groove. Further, since the tire groove inspection needs to be performed manually, there is a variation in the determination of the wear state of the tire groove.

  Therefore, in Patent Document 1, the tire groove detection unit is embedded in a predetermined road surface at a gas station, an entrance of an expressway, a vehicle inspection station, etc., and the ground contact surface of the tire when the automobile passes over the tire groove detection unit. A tire groove detection device is proposed in which the wear state of the tire groove formed on the tire is detected.

  That is, as shown in FIG. 6, the tire groove detection unit 1 includes a tire groove detection module 5 of a tire T in which a light emitting element 2 and a detection element 3 are arranged in a V-shaped groove 4. A plurality are connected. As shown in FIG. 7, such a tire groove detection unit 1 is embedded in a predetermined road surface R at a gas station, an entrance of an expressway, a vehicle inspection station, and the like, and when the automobile C passes over the tire groove detection unit 1, The tire T rides on the tire groove detection unit 1.

At this time, as shown in FIG. 6, when the light from the light emitting element 2 is reflected by the tire groove and taken into the detection element 3, the amount of light received by the detection element 3 according to the depth of the tire groove is output as an analog detection signal. Is done. Then, when the analog detection signal is digitized by the sensor input unit 7 and the digital signal is converted to binary data based on the threshold value by the binary data conversion unit 8, the tire T The tire groove wear state is detected and determined and displayed on the display unit 10.
Japanese Patent Application Laid-Open No. 07-92058

  However, in the above-described patent document 1, since the depth of the tire groove is detected according to the amount of light received reflected by the tire groove, the climatic conditions change such as cloudy or rainy. If mud or dust adheres to the light emitting surface and the light receiving surface of the light emitting element 2 and the detecting element 3 of the tire groove detecting unit 1, the amount of received light reflected by the tire groove changes regardless of the depth of the tire groove. Therefore, it is difficult to accurately detect the wear state of the tire groove of the tire T.

  The problem to be solved is that if the depth of the tire groove is detected according to the amount of light received reflected by the tire groove, it will be reflected by the tire groove due to changes in the climatic conditions and the detection conditions on the tire groove detection side. Since the amount of received light changes regardless of the depth of the tire groove, it is difficult to accurately detect the wear state of the tire groove.

A wear state detection system for a wear product according to the present invention is provided at a wear limit position in a wear progress direction of a worn body, and transmitting means for transmitting arbitrary information; receiving information from the transmitting means; Wear state determination means for determining the wear state of the body, and notification means for notifying the determination result of the wear state by the wear state determination means, the wear state determination means, along with the wear of the worn body, When the information from the transmitting means cannot be received, it is determined that the worn body is at the wear limit, and the reporting means is notified that the worn body is at the wear limit.
In addition, a plurality of the transmission means are provided along the wear progressing direction of the wearable body, and the wear state determination means uses information from any of the transmission means that can send as the wearable body wears. On the basis of this, it is possible to determine the wear state of the worn body and to inform the notifying means of the wear state of the worn body.
The transmitting means is provided at a plurality of locations on the wear target surface of the worn body, and a plurality of the sending means are provided along the wear progressing direction of the worn body. The wear state of the worn body is determined on the basis of information from any transmitting means capable of transmitting in accordance with wear, and the notification means is informed of the wear of the worn body. Can do.
One or a plurality of objects to be worn according to the present invention are provided along the direction of progress of wear, and have a transmission means for transmitting arbitrary information.
In the wear state detection system for a wear product according to the present invention, when any information can be received from the transmission means provided at the wear limit position in the wear progress direction of the wear object, the wear state determination means causes the wear object to be detected. It can be determined that the wear is not the limit, and when the wearable body is worn, the transmission means is destroyed or excluded from the wearable body, so that information from the transmission means cannot be received. It can be determined that the wear limit is reached, and the notification means can be informed that the wear target is at the wear limit.

  According to the wear state detection system for a wear product of the present invention, when information from the transmission means cannot be received, it is determined that the wear body is at the wear limit, and the wear body is at the wear limit with respect to the notification means. Since the notification is made, the wear state of the worn product can be detected with high accuracy without being affected by changes in the climatic conditions and detection conditions.

  The wear state detection system for a wear product according to the present invention is capable of receiving any information from the transmitting means provided at the wear limit position in the wear progress direction of the worn body. Is not the limit, and when the wearable body wears, the transmitting means is destroyed or excluded from the worn body, and when the information from the transmitting means cannot be received, the worn body is at the wear limit. The wear state of the wear product is accurately detected without being affected by changes in climatic conditions or detection conditions by informing the notification means that the object to be worn is at the wear limit. .

  FIG. 1 is a diagram showing an embodiment in which the wear state detection system for a worn product according to the present invention is applied to a tire wear state detection system for detecting a groove remaining amount of a vehicle tire, and FIGS. FIG. 4 is a diagram for explaining a tire wear state detection method by the tire wear state detection system of FIG. 1, FIG. 4 is a view showing another embodiment when the configuration of the tag of FIG. 1 is changed, and FIG. It is a figure for demonstrating the tire wear state detection method in the tire for vehicles.

  As shown in FIG. 1, the tire wear state detection system has a tread portion 22 that forms a groove 21 of a vehicle tire (hereinafter simply referred to as a tire) 20 as an object to be worn so that the depth varies in the wear progression direction. Wireless tags 31 to 33 are embedded as transmitting means. Here, these tags 31 to 33 may be embedded in all the tread portions 22 or may be embedded in an arbitrary tread portion 22.

  The tags 31 to 33 have ID codes as different information, for example, the tag 31 has an ID code (ID1), the tag 32 has an ID code (ID2), and the tag 33 Has an ID code (ID3).

  Here, the tag 31 is disposed at a position close to the ground contact surface that is the wear target surface of the tread portion 22, the tag 32 is disposed in the middle of the tread portion 22, and the tag 33 is disposed at the base of the tread portion 22. . In other words, the tag 31 is in a position indicating that the wear of the groove 21 of the tire 20 is small, the tag 32 is in a position indicating that the wear of the groove 21 of the tire 20 is moderate, and the tag 33 is in the position of the tire 20. It can be said that the groove 21 is in a position indicating that the wear of the groove 21 has reached its limit.

  And these tags 31-33 are destroyed or excluded from the tread part 22 by contact with a grounding surface according to wear of the tire 20. Therefore, the wear state of the tire 20 can be detected based on the presence / absence of data indicating the ID codes (ID1) to (ID3) from the tags 31 to 33.

  In addition, although the case where the number of tags 31 to 33 is three is illustrated here, the number is not limited to three, for example, only one tag 33 is provided, and data indicating an ID code (ID3) from the tag 33 is illustrated. If there is no, it may be detected that the wear of the groove 21 of the tire 20 has reached its limit. Furthermore, the number of tags 31 to 33 is not limited to three, and may be four or more. In this case, the wear state of the groove 21 of the tire 20 can be finely detected.

  The tire wear state detection system includes an interrogator 41, a processing unit 42, and a tire groove warning display unit 43. Here, the interrogator 41 and the processing unit 42 are wear state determination means. Moreover, the tire groove warning display part 43 is an alerting | reporting means. The interrogator 41 can be provided in the tire house 40, for example. The interrogator 41 transmits radio waves to the tags 31 to 33, and obtains ID codes (ID1) to (ID3) transmitted from the tags 31 to 33. Here, the radio waves for the tags 31 to 33 may be transmitted intermittently at an arbitrary timing, or may be transmitted continuously.

  The processing unit 42 is installed at an arbitrary place in the vehicle, processes data from the interrogator 41, and when only the ID code (ID3) is obtained from the interrogator 41, for example, a tire groove warning signal. Is output. When all the ID codes (ID1) to (ID3) are obtained from the interrogator 41, the processing unit 42 may output a signal indicating that wear is small, and the ID code (ID2), ( When ID3) is obtained from the interrogator 41, a signal indicating that the wear is moderate may be output. Furthermore, when all ID codes (ID1) to (ID3) or ID codes (ID2) and (ID3) are obtained from the interrogator 41, a signal indicating that the tire groove remaining amount is good is output. It may be.

  The tire groove warning display unit 43 is disposed at an arbitrary position in the meter panel 44, for example, and receives a tire groove warning signal from the processing unit 42 to notify the tire groove warning. The notification of the tire groove warning may be a lighting or blinking of a lamp, a mark indicating a warning, or a character display.

  Thus, by notifying the tire groove warning by the tire groove warning display unit 43, it is possible to reliably warn the driver that the wear of the tire 20 has reached its limit. The tire groove warning notification is not limited to warning that the wear of the groove 21 of the tire 20 has reached its limit, but indicates that the wear of the groove 21 of the tire 20 is small or moderate. Alternatively, it may be displayed that the tire groove remaining amount is good. Thus, by displaying that the wear of the groove 21 of the tire 20 is small, moderate, and that the remaining amount of the tire groove is good, it is possible to give the driver a sense of security. .

Next, a tire wear state detection method will be described.
First, as shown in FIG. 2, radio waves are transmitted from the interrogator 41 to each of the tags 31 to 33, and data indicating their own ID codes (ID1) to (ID3) from the tags 31 to 33 that have received the radio waves. Is transmitted, the interrogator 41 receives data indicating these ID codes (ID1) to (ID3) (step S1).

  Data indicating the ID codes (ID1) to (ID3) obtained by the interrogator 41 is sent to the processing unit 42 for data processing. Here, if each of the tags 31 to 33 is not destroyed or removed from the tread portion 22 in accordance with the wear of the tire 20, the data received by the interrogator 41 includes all ID codes (ID1) to (ID3). (Step S2). Therefore, these ID codes (ID1) to (ID3) are subjected to data processing by the processing unit 42, whereby it is determined that the wear of the groove 21 of the tire 20 is small (step S3).

  On the other hand, for example, if the tag 31 is destroyed or removed from the tread portion 22 in accordance with the wear of the tire 20, the data indicating the ID code (ID 1) from the tag 31 is not transmitted and is received by the interrogator 41. The data to be displayed indicates the ID codes (ID2) and (ID3) (step S4). Therefore, these ID codes (ID2) and (ID3) are subjected to data processing by the processing unit 42, so that it is determined that the wear of the groove 21 of the tire 20 is moderate (step S5).

  On the other hand, as shown in FIG. 3, for example, if the tags 31 and 32 are destroyed or removed from the tread portion 22 according to wear of the tire 20, the ID codes (ID 1) and ( Data indicating ID2) is not transmitted, and only data received by the interrogator 41 indicates ID code (ID3) (step S6). Therefore, it is determined that the data of the ID code (ID3) is processed by the processing unit 42, so that the wear of the groove 21 of the tire 20 is large and the limit is reached (step S7).

  In this case, a tire groove warning signal is output from the processing unit 42, and a tire groove warning is notified by the tire groove warning display unit 43. This makes it possible to reliably warn the driver that the wear of the tire 20 has reached its limit.

  In (Step S3) and (Step S5), when it is determined that the wear of the groove 21 of the tire 20 is small or moderate, as described above, the groove of the tire 20 is displayed by the tire groove warning display unit 43. 21 may indicate that the wear of the tire 21 is small, moderate, and that the remaining amount of the tire groove is good.

  As described above, in the present embodiment, the wireless tags 31 to 33 as the transmitting means are embedded in the tread portion 22 forming the groove 21 of the tire 20 as the worn body so as to have different depths. Radio waves are transmitted to each of the tags 31 to 33, and the interrogator 41 receives data indicating any of the ID codes (ID1) to (ID3) from any of the tags 31 to 33 that have received the radio waves. For example, when only the ID code (ID3) is received, the data is processed by the processing unit 42, so that it is determined that the wear of the groove 21 of the tire 20 is large and is approaching the limit. By outputting the tire groove warning signal, the tire groove warning display unit 43 notifies the tire groove warning. Without kicking the state of wear of the tire 20 can be accurately detected.

  In addition, although this embodiment demonstrated the case where the tags 31-33 which have ID code (ID1)-(ID3) are arrange | positioned in each tread part 22 so that depth may differ, it is not restricted to this example, For example, As shown in FIG. 4, the tags 31 a to 33 a, 31 b to 33 b, and 31 c to 33 c having different ID codes may be arranged in the tread portions 22 so as to have different depths.

  That is, tags 31a to 33a having ID codes (ID1-a) to (ID3-a) are arranged on the tread portion 22 on the left side in the drawing so as to have different depths. In the middle tread portion 22 in the figure, tags 31b to 33b having ID codes (ID1-b) to (ID3-b) are arranged with different depths. In the tread portion 22 on the right side of the figure, tags 31c to 33c having ID codes (ID1-c) to (ID3-c) are arranged with different depths.

  In this manner, by arranging the tags 31a to 33a, 31b to 33b, and 31c to 33c having different ID codes in the respective tread portions 22, similarly to the above, the tags 31a to 33a and 31b are connected from the interrogator 41. When radio waves are transmitted to .about.33b, 31c to 33c, when the wear of the tire 20 is small, ID codes (from the tags 31a to 33a, 31b to 33b, 31c to 33c that have received the radio waves) ID1-a) to (ID3-a), (ID1-b) to (ID3-b), (ID1-c) to (ID3-c) are received by the interrogator 41.

  On the other hand, as shown in FIG. 5, for example, when the wear on the right tread portion 22 in the drawing is the largest and the wear on the tread portion 22 in the middle in the drawing is the second largest, The tags 31c and 32c of 22 and the tag 31b of the tread portion 22 in the middle of the figure are destroyed or removed from the tread portion 22 according to the wear of the tire 20, and the IDs from the tags 31b, 31c and 32c. Transmission of data indicating codes (ID1-b), (ID1-c), and (ID2-c) is eliminated.

  As a result, the ID codes received by the interrogator 41 are (ID1-a) to (ID3-a), (ID2-b), (ID3-b), and (ID3-c). Since the code is subjected to data processing by the processing unit 42, it is possible to determine whether or not the tire 20 is reduced.

  Further, in the present embodiment, the case where the wireless tags 31 to 33 are embedded in the tread portion 22 of the tire 20 has been described. However, as long as communication with the interrogator 41 is possible, such a wireless type is used. It is not limited to the tags 31-33.

  Moreover, although this embodiment demonstrated the case where the radio | wireless type tags 31-33 as a transmission means were embedded so that the depth might differ in the tread part 22 which forms the groove | channel 21 of the tire 20 as a to-be-abraded body, Not limited to this example, the tags 31 to 33 may be incorporated into the object to be worn by integral molding. As a to-be-weared body in this case, it can be set as various molded articles formed, for example with resin. In this case, since the tags 31 to 33 are small, light, and inexpensive, they do not affect the procedure, cost, quality, and the like related to the manufacture when manufacturing various molded products.

  The present invention is not limited to detecting the wear of a vehicle tire, and can be applied to detecting what is consumed depending on the frequency of use. Specifically, it can be applied to road (asphalt) wear detection, shoe sole wear detection, brake pad wear detection, audio head wear detection, rail wear detection, sliding portion wear detection, and the like. .

It is a figure which shows one Embodiment at the time of applying the abrasion state detection system of the abrasion goods of this invention to the tire abrasion state detection system which detects the groove | channel residual amount of a vehicle tire. It is a flowchart for demonstrating the tire wear state detection method by the tire wear state detection system of FIG. It is a figure for demonstrating the tire wear state detection method by the tire wear state detection system of FIG. It is a figure which shows other embodiment at the time of changing the structure of the tag of FIG. FIG. 5 is a diagram for explaining a tire wear state detection method in the vehicle tire of FIG. 4. It is a figure for demonstrating the conventional tire groove | channel detection apparatus. It is a figure for demonstrating the tire groove detection by the tire groove detection apparatus of FIG.

Explanation of symbols

20 Vehicle tire 21 Groove 22 Tread part 31-33 Tag 31a-33a Tag 31b-33b Tag 31c-33c Tag 41 Interrogator 42 Processing unit 43 Tire groove warning display 44 Meter panel (ID1)-(ID3) ID code ( ID1-a) to (ID3-a) ID code (ID1-b) to (ID3-b) ID code (ID1-c) to (ID3-c) ID code

Claims (4)

A transmission means provided at the wear limit position in the wear progression direction of the worn body, and transmitting arbitrary information;
A wear state determination unit that receives information from the transmission unit and determines a wear state of the worn body;
Informing means for informing the determination result of the wear state by the wear state determination means,
The wear state determination means determines that the wear body is at a wear limit when information from the transmission means cannot be received due to wear of the wear body, and the wear body is informed to the notification means. A wear state detection system for a wear product, characterized in that the wear limit is reported. A plurality of the transmitting means are provided along the wear progressing direction of the worn body,
The wear state determining means determines the wear state of the worn body based on information from any of the sending means capable of sending along with the wear of the worn body, and notifies the worn means to the notification means. The wear state detection system for a wear product according to claim 1, wherein the wear state of the body is notified. The transmitting means is provided at a plurality of locations on the wear target surface of the worn body, and is provided along the wear progressing direction of the worn body,
The wear state determining means determines the wear state of the worn body based on information from any of the sending means capable of sending along with the wear of the worn body, and notifies the worn means to the notification means. The wear state detection system for a wear product according to claim 1 or 2, wherein the wear of the body is reported.   An object to be worn comprising one or a plurality of transmission means for transmitting arbitrary information along a wear traveling direction.

Images