JP2015028467A - Device for diagnosing deterioration of tile, and method for diagnosing deterioration of tile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for diagnosing the deterioration of a tile and a method for diagnosing the deterioration of a tile capable of accurately diagnosing the deterioration of the tile while reducing the generation of noise even when an abrasion method is used.SOLUTION: The device for diagnosing the deterioration of a tile includes: an abrasion mechanism part 1 having an abrasion bar 6; a reciprocation moving mechanism part 2 for reciprocating the abrasion mechanism part 1 in one discretion T1; and an abrasion sound recording part 3 for capturing abrasion sound. The device further includes a support mechanism 7 for supporting the abrasion bar 6 of the abrasion mechanism part 1 and an axis part 4 of the abrasion bar 6, and an abrasion bar reciprocation mechanism 8 for moving the abrasion bar 6 together with the support mechanism 7 in the other direction T2 to press/separate a metal ball on/from a tile surface. Further, the abrasion bar 6 is formed by connecting the metal ball 5 to one end side of the axis part 4 via an elastic member for tension. The support mechanism 7 is configured to include a cylindrical body for supporting the abrasion bar 6 in a reciprocating manner in the other direction T2 by inserting the axis part 4 of the abrasion bar 6 inside the cylindrical body, and an elastic member for compression interposed between one end of the cylindrical body and the metal ball 5 of the abrasion bar 6.

Description

  The present invention relates to a tile deterioration diagnosis apparatus and a tile deterioration diagnosis method.

  For example, tiles affixed to the outer walls and floors of buildings may float, peel, or crack due to deterioration over time, and in particular, tiles affixed to outer walls, etc. may cause a major accident if they are peeled off due to floatation, peeling, or cracking. There is a fear.

  For this reason, conventionally, the deterioration of tiles affixed to the outer wall of a building has been diagnosed (inspected and investigated). As a method for diagnosing the deterioration of this type of tile, an external visual inspection method and a hammering inspection method are used. The repulsion method and the infrared diagnostic method are used.

  Of these, the hammering inspection method uses a test hammer to strike the tile surface with a test hammer, and distinguishes the subtle difference between the deteriorated part and the sound part. Can be discriminated relatively easily, and is often used as a method for diagnosing tile deterioration.

  On the other hand, as in the sound hitting inspection method, a scraping method is also frequently used as a tile deterioration diagnosis method that identifies a deteriorated portion based on a subtle difference in sound between a deteriorated portion and a sound portion (for example, see Patent Document 1). The rubbing method is, for example, pressing a metal ball having a diameter of about 20 mm against the tile surface of the inspection target surface, moving the tile surface so as to rub with the metal ball, and lifting or peeling the tile from the sound (friction sound) generated at that time. It is possible to determine the presence or absence of deterioration, and it is possible to identify a deteriorated portion.

  Furthermore, this rubbing method is a method for capturing the rubbing sound caused by moving the metal ball while pressing the metal ball against the tile surface of the inspection target surface. Easy to plan. In other words, it can be diagnosed by operating a robot, etc., and the inspector analyzes the scratching sound recorded by the microphone with a computer, etc., and is less affected by individual differences such as the inspector's experience and qualities, with high accuracy. Diagnosis can be performed.

Japanese Utility Model Publication No. 7-34367

  However, when performing degradation diagnosis of tiles by a scraping method using a robot, if a configuration in which a metal ball is swung in an arc shape while being pressed against the tile surface as in the diagnosis device of Patent Document 1, the tile surface is particularly used. Noise including various frequencies is generated due to the level difference, and it may not be possible to accurately diagnose the presence or absence of deterioration of the tile due to the noise when performing analysis and diagnosis with a computer.

  In view of the above circumstances, the present invention provides a tile deterioration diagnosis apparatus and a tile deterioration diagnosis method capable of suppressing the generation of noise and performing a tile deterioration diagnosis with high accuracy even when the scraping method is used. The purpose is to provide.

  In order to achieve the above object, the present invention provides the following means.

  The tile deterioration diagnosis apparatus according to the present invention captures a rubbing sound generated by moving a rubbing rod formed with a metal ball on one end side of a shaft portion while pressing the metal ball against the tile surface, thereby deteriorating the tile. A tile deterioration diagnostic apparatus for diagnosing the presence or absence of a rubbing noise, comprising a rubbing mechanism having the rubbing rod, a reciprocating mechanism for reciprocating the rubbing mechanism in one direction, and a rubbing sound for capturing the rubbing sound And a rubbing mechanism, the rubbing rod, a support mechanism for supporting the shaft portion of the rubbing rod, and the axial direction of the rubbing rod perpendicular to the one direction along with the support mechanism. A rubbing rod advance / retreat mechanism for moving the metal ball forward and backward in the other direction and pressing / separating the metal ball against the tile surface, and the rubbing rod is connected to one end side of the shaft portion via the elastic member for tension. Connect the metal ball to The support mechanism has a cylindrical shape that is inserted into the shaft portion of the rubbing rod from one end side so that the respective axes are coaxially arranged, and the rubbing rod is supported so as to advance and retreat in the other direction. A locking member that is integrally provided on the other end side of the shaft portion of the rubbing rod inserted through the other end of the cylindrical body and is locked to the other end of the cylindrical body, and the cylindrical shape It is characterized by comprising a compression elastic member interposed between one end of the body and the metal ball of the rubbing rod.

  Further, in the tile deterioration diagnosis device of the present invention, the reciprocating mechanism unit includes a traveling rail extending in the one direction, a pair of sprockets attached to both ends of the traveling rail, and the An endless rotating member that is wound around a pair of sprockets and is disposed so as to surround the traveling rail, driving means that rotationally drives one of the sprockets, and the amount and direction of rotation of the rotating member A rotation measurement control means for measuring and controlling the friction rod, and the friction bar advance / retreat mechanism is engaged with the travel rail so as to advance and retreat in the one direction and is connected to the rotation member. It is desirable.

  The method for diagnosing tile deterioration according to the present invention is a method for detecting deterioration of a tile by detecting a rubbing sound generated by moving a rubbing rod formed with a metal ball on one end side of a shaft portion while pressing the metal ball against a tile surface. A method of diagnosing tile deterioration for diagnosing the presence or absence of a rubbing sound, a rubbing sound recording step for recording the rubbing sound, and a low frequency component removal for removing low frequency components from the rubbing sound data recorded in the rubbing sound recording step A square that squares the processing process and the fuzzing sound data processed in the low-frequency component removal processing step, and emphasizes the difference between the fuzzing sound generated in the sound part of the tile and the flaw sound generated in the deteriorated part of the tile The processing step and the rubbing sound data processed in the square processing step are integrated with the rubbing sound data at arbitrary time intervals, and compared with a preset threshold value to determine the presence / absence of a deteriorated portion of the tile. Along with the inferiority of tiles Characterized in that it includes a deterioration diagnosis process for a particular tile the position of the parts.

  In the tile deterioration diagnosis method of the present invention, the normal part scratch sound acquisition step of acquiring the normal part scratch sound data specified in advance, the normal part scratch sound acquisition step, and the low frequency component removal processing step in advance. It is desirable to include a spectral subtraction process step of performing a spectral subtraction process on the diagnostic data acquired by the rubbing sound recording step and the low frequency component removal processing step, using the acquired normal part rubbing sound profile.

  In addition, the mortar for sticking a tile is also contained in the tile which concerns on this invention, and this invention (deterioration diagnostic apparatus, degradation diagnostic method) makes this mortar a diagnostic object with a tile single-piece | unit.

  In the tile deterioration diagnosis device of the present invention, the rubbing rod is formed by connecting a metal ball to one end side of the shaft portion through the elastic member for tension, and the support mechanism is formed between the one end of the cylindrical body and the rubbing rod. And a compression elastic member interposed between the metal balls, and the metal ball of the rubbing rod can be moved back and forth in the axial direction and tilted about the axis by the elastic member for compression and the elastic member for compression. Therefore, even if there is a slight level difference on the tile surface of the inspection target surface, the metal ball can be moved over the level difference while being pressed against the tile surface.

  This makes it possible to perform continuous diagnosis (inspection and investigation) without stopping the rubbing operation, and to scrape metal balls suitably on the tile surface to suppress the generation of noise due to steps. Sound can be captured, and a highly reliable diagnosis can be performed.

  In the tile deterioration diagnosis method according to the present invention, the low frequency component of the scraping sound is removed, and the difference in the scraping sound between the healthy portion and the deteriorated portion such as the float is expanded to perform a highly reliable diagnosis. It becomes possible.

  Further, the processing operation can be performed relatively easily, and processing can be performed in a short time and at a low cost as compared with frequency analysis or the like.

  As a result, the rubbing method determination process that has conventionally relied on the inspector's sense can be processed automatically and at high speed using a computer, and can be applied to a diagnostic robot or the like.

It is a perspective view which shows the deterioration diagnosis apparatus of the tile which concerns on one Embodiment of this invention. It is the figure which expanded the S1 part of FIG. It is the figure which expanded the S2 part of FIG. It is a figure which shows the abrasion mechanism part of the degradation diagnosis apparatus of the tile which concerns on one Embodiment of this invention. It is an exploded view which shows the rubbing stick | rod of the deterioration diagnosis apparatus of the tile which concerns on one Embodiment of this invention. It is a figure which shows an example of the abrasion sound data (recording waveform) obtained by the degradation diagnosis apparatus of the tile which concerns on one Embodiment of this invention. It is a figure which shows the fuzzing sound data (recording waveform) after performing the removal process of a low frequency component with respect to the fuzzing sound data of FIG. It is the figure which extracted and showed the P part of the abrasion sound data of FIG. It is a figure after carrying out the square process of the abrasion sound data of the P section of FIG. FIG. 10 is a diagram after an integration process is performed on the fuzzing sound data of part P in FIG. 9 every 5 msec (220 data). FIG. 10 is a diagram in which the rubbing sound data of part P in FIG. 9 is integrated every 40 msec (1760 data) and compared with a threshold value. Spectral subtraction processing (spectral subtraction) for diagnostic data acquired by the flaw sound recording step and the low frequency component removal processing step using the normal portion flaw sound profile acquired in advance by the normal portion scratch sound acquisition step and the low frequency component removal processing step. It is the figure used for description of the degradation diagnosis method of the tile which performs a process process. Performs an arithmetic process to square the spectral subtraction data after the spectral subtraction process (square process), expands the difference between the sound data of the sound part and the sound data of the deteriorated part, and integrates the sound data in order. It is the figure used for description which specifies a deterioration part (tile deterioration diagnosis process).

  Hereinafter, a tile deterioration diagnosis apparatus and a tile deterioration diagnosis method according to an embodiment of the present invention will be described with reference to FIGS. Here, this embodiment diagnoses the presence or absence of deterioration such as floating, peeling, cracking, etc., of tiles (including mortar for attaching tiles) attached to the outer wall or floor of a building, for example. The present invention relates to a tile deterioration diagnosis apparatus and a tile deterioration diagnosis method.

  As shown in FIG. 1, the tile deterioration diagnosis apparatus A of the present embodiment includes a rubbing mechanism 1, a reciprocating mechanism 2 for moving the rubbing mechanism 1 back and forth in one direction T <b> 1, and an abrasion. And a sound recording unit 3.

  As shown in FIGS. 2, 3, 4, and 5, the rubbing mechanism portion 1 includes a rubbing rod 6 including a metal ball 5 formed with a diameter of, for example, about 20 mm on one end side of the shaft portion 4, and A support mechanism 7 for supporting the shaft portion 4 of the rubbing rod 6 and a rubbing rod advance / retreat mechanism 8 for moving the rubbing rod 6 in the other direction T2 along the axis O1 direction of the rubbing rod 6 together with the support mechanism 7 are provided. ing.

  The scraping rod 6 is formed by integrally connecting one end of the shaft portion 4 and the metal ball 5 via a tightly wound tension coil spring (tensile elastic member) 9. Specifically, as shown in FIG. 5, the rubbing rod 6 is coaxial with the axis O <b> 1 of the shaft portion 4, the spring shaft O <b> 2 of the tension coil spring 9, and the axis O <b> 3 of the protruding portion 5 a provided on the metal ball 5. While being arranged above, one end portion of the shaft portion 4 and the protruding portion 5a provided on the metal ball 5 are inserted and engaged with both end portions of the tension coil spring 9, respectively. It is formed so as to be connected to the shaft portion 4 via a coil spring 9 for tension.

  As shown in FIGS. 2 and 4, the support mechanism 7 includes a cylindrical body 10, a locking member 11, a compression coil spring (compression elastic member) 12, and an attachment member 13. Specifically, the support mechanism 7 inserts the shaft portion 4 of the scraping rod 6 into the cylindrical body 10 from one end side so that the axis lines O1 and O4 are coaxially arranged, and the cylindrical body 10 A locking member 11 such as a nut is provided on the other end side of the shaft portion 4 through which the other end is inserted, and the locking member 11 is locked to the other end of the cylindrical body 10 so that the scraping rod 6 is cylindrical. The body 10 is configured to be engaged and supported.

  Further, the compression coil spring 12 of the support mechanism 7 includes one end side of the shaft portion 4 projecting outward from the one end side of the cylindrical body 10 in the axis O4 direction, the coil spring 9 for tension, and the protruding portion 5a of the metal ball 5. Are provided so that one end is brought into contact with one end of the cylindrical body 10 and the other end is brought into contact with the protruding portion 5a (or spherical surface) of the metal ball 5, respectively. It has been.

  In this way, the other end side of the shaft portion 4 of the rubbing rod 6 is locked to the other end of the cylindrical body 10 by the locking member 11, and compression is performed between one end of the cylindrical body 10 and the metal ball 5. Since the support mechanism 7 is configured by providing the coil spring 12, the support mechanism 7 supports the rubbing rod 6 and the metal ball 5 so as to freely advance and retract in the direction of the axis O1.

  Further, the attachment member 13 of the support mechanism 7 is integrally connected to the cylindrical body 10 and protrudes outward in the direction orthogonal to the axes O1 and O4 of the cylindrical body 10 and the rubbing rod 6.

  As shown in FIGS. 2 and 3, the rubbing rod advance / retreat mechanism 8 is engaged with and connected to the reciprocating mechanism unit 2, and is moved forward and backward in one direction T <b> 1 by driving the reciprocating mechanism unit 2. 15, a guide member 16 provided integrally with the guide member 16, an advance / retreat member 17 engaged with the guide member 16, supported by the guide member 16 so as to be movable back and forth in the other direction T 2 orthogonal to the one direction T 1, In order to advance and retract the member 17 in the other direction T2, a rubbing rod advance / retreat mechanism main body 18 is provided.

  Further, the rubbing rod advance / retreat mechanism main body 18 of the present embodiment is a link mechanism, and a servo motor 19 provided with a rotation shaft arranged in a direction orthogonal to both the one direction T1 and the other direction T2, and a servo motor A first link 20 having one end fixed to a rotating shaft 19, one end is connected to the other end of the first link 20, and the other end is connected to the advance / retreat member 17 so as to be rotatable. And a second link 21 provided.

  Further, the attachment member 13 of the support mechanism 7 that supports the rubbing rod 6 so as to be movable back and forth in the other direction T2 is attached to the advancing / retreating member 17 of the rubbing rod advance / retreat mechanism 8, and the support mechanism 7 (and thus the rubbing rod 6) and the rubbing rod advance / retreat mechanism. 8 is connected. Then, when the servo motor 19 of the rubbing rod advance / retreat mechanism 8 is driven to rotate the rotating shaft forward and backward, the first link 20 and the second link 21 rotate, and the advance / retreat member 17 is guided by the guide member 16 and moved. Then, the support mechanism 7 and the rubbing rod 6 move forward and backward in the other direction T2 together with the advance / retreat member 17.

  Next, a reciprocating mechanism 2 for moving the rubbing mechanism 1 forward and backward in one direction T1 includes a traveling rail 22 extending in one direction T1, and both end portions of the traveling rail 22, as shown in FIG. Sprockets 23 and 24 attached to the respective sides, a rotating member 25 such as an endless chain or belt wound around the pair of sprockets 23 and 24 so as to surround the traveling rail 22, A drive motor 26 that rotationally drives the sprocket 23, and an encoder 27 and a limit switch 28 for measuring and controlling the amount and direction of rotation of the rotating member 25.

  As shown in FIGS. 1, 2, and 3, the connecting member 15 of the rubbing rod advancing / retracting mechanism 8 is engaged with the traveling rail 22 extending in one direction T1 of the reciprocating movement mechanism unit 2 so as to freely advance and retract in one direction T1. By connecting to the rotating member 25, the reciprocating mechanism 2 and the support mechanism 7 of the rubbing mechanism 1 are connected. Then, the drive motor 26 of the reciprocating mechanism unit 2 is driven forward and backward, and the rotating member 25 rotates forward and backward, whereby the rubbing rod 6 moves forward and backward in one direction T1 together with the support mechanism 7 of the rubbing mechanism unit 1. .

  On the other hand, the rubbing sound recording unit 3 captures and records the rubbing sound generated at a position corresponding to the position data detected by the encoder 27 of the reciprocating mechanism unit 2, and is shown in FIGS. 1 and 2, for example. In this way, it is provided in the attaching member 13 of the rubbing mechanism 1 or attached to the advance / retreat member 17 or the like so as to be able to advance and retreat in one direction T1 together with the rubbing rod advance / retreat mechanism 8 and the rubbing rod 6.

  When diagnosing the presence or absence of deterioration, such as floating / peeling, cracking, etc., of tiles affixed to the outer wall of a building using the tile deterioration diagnosis apparatus A of the present embodiment having the above-described configuration, The tile deterioration diagnosis apparatus A having the above configuration is directly supported by a wire or mounted on a carriage or the like, and arranged so that one direction T1 is along the tile surface of the inspection target surface and the other direction T2 is substantially orthogonal to the tile surface. To do.

  At this stage, the servo motor 19 of the rubbing rod advance / retreat mechanism 8 is driven to rotate the rotating shaft, and the support mechanism 7 and the rubbing rod 6 are moved in the other direction together with the advance / retreat member 17 by the rotation of the first link 20 and the second link 21. At T2, the metal ball 5 of the scraping bar 6 is brought into contact with the tile surface with a predetermined pressing force.

  Next, the drive motor 26 of the reciprocating movement mechanism unit 2 is driven to rotate the rotating member 25 such as an endless chain or belt forward and backward, and the metal ball 5 is pressed against the tile surface following the rotation. The rubbing rod 6 is advanced and retracted along the traveling rail 22 in one direction T1. At this time, the turning amount and turning direction of the turning member 25 are measured and controlled by the encoder 27 and the limit switch 28, and the rubbing rod 6 moves back and forth within a range corresponding to the length of the traveling rail 22.

  Then, the metal ball 5 of the rubbing rod 6 moves forward and backward in one direction T1 while being pressed against the tile surface, so that a rubbing sound is generated and corresponds to the position data together with the position data of the rubbing rod 6 by the encoder 27. The rubbing sound generated at the position is recorded in the rubbing sound recording unit 3.

  As a result, the presence or absence of deterioration such as floating or peeling of the tile is determined from the rubbing sound generated when the metal ball 5 is pressed against the tile surface of the inspection target surface and the tile surface is moved so as to be rubbed with the metal ball.

  Further, the servo motor 19 of the rubbing rod advance / retreat mechanism 8 is driven, and the rubbing rod 6 is repeatedly switched between the pressed state and the retracted state of the metal ball 5, and the rubbing rod 6 is sequentially scraped while changing the position of the tile deterioration diagnosis device A. Record the sound and determine if the tile has deteriorated. Thereby, when degradation has occurred, the size and range of the degradation portion are specified.

  Furthermore, in the tile deterioration diagnosis apparatus A of the present embodiment, when the tile is diagnosed (inspected and investigated) as described above, the scraping bar 6 attaches the metal ball 5 to the shaft portion 4 via the tension coil spring 9. In addition, the shaft 4 and the tension coil spring 9 are enclosed between the cylindrical body 10 of the rubbing mechanism 1 and the metal ball 5 of the rubbing rod 6, and the metal ball 5 is attached to the axis O1. A compression coil spring 12 is provided so as to press outward in the direction, and the scraping bar 6 is supported so as to be able to advance and retract in the other direction T2. Thereby, the metal ball 5 is provided so as to be movable forward and backward in the direction of the axis O1 and tiltable about the center of the axis O1.

  For this reason, in the tile degradation diagnosis apparatus A of the present embodiment, even if the tile surface of the inspection target surface is uneven or the apparatus is lifted due to the influence of wind or the like during the inspection. For example, about 1 cm of unevenness and floating can be absorbed according to the advancing / retreating amount of the rubbing rod 6. Therefore, even if there is a slight level difference during the inspection, the metal ball 5 can overcome it without any trouble, and the pressing state of the rubbing rod 6 against the tile surface is suitably maintained, and the operation continues without stopping the operation. In addition, it is possible to record the scratching sound with high accuracy and to diagnose the tile.

  On the other hand, when the tile surface inspection is performed by the tile deterioration diagnosis apparatus A according to the present embodiment and the rubbing sound data recorded in the rubbing sound recording unit 3 is analyzed, the rubbing of the tile in which deterioration such as floating occurs. A process for emphasizing the sound is performed, and a sound signal that is equal to or higher than a set threshold value is determined as deterioration such as floating.

  Specifically, in the tile deterioration diagnosis method according to the present embodiment, a rubbing sound is recorded (a rubbing sound recording step), and the rubbing sound data recorded in the rubbing sound recording unit 3 as shown in FIG. As shown in FIG. 7, LPF processing for removing low frequency components is performed (low frequency component removal processing step).

  Next, in the present embodiment, a portion where there is a possibility of deterioration such as floating as indicated by P in FIGS. 6 and 7 is extracted as shown in FIG. 8, and low as shown in FIG. A calculation process for squaring the fuzzy sound data (sound signal) after the frequency component is cut is performed, and the difference between the sound data of the sound part of the sound part and the sound data of the deteriorated part is enlarged and emphasized (square process step).

  Then, as shown in FIGS. 10 and 11, the rubbing sound data of the set tile surface range (time range), for example, the rubbing sound data for 1/2 to 1 tile is sequentially integrated, The value after processing is compared with a threshold value, and a portion where scratching sound data exceeding a preset threshold value is generated is specified as a degraded portion such as a float (a tile degradation diagnosis step).

  Finally, the occurrence part of the deteriorated part is specified in this way, and the existence position and size of the deteriorated part in the entire range are visualized by graphic processing and mapping process.

  As a result, the difference between the normal sounded part and the deteriorated part (problem part) is small, and the subtle difference in the deteriorated part can be accurately detected under the influence of ambient noise. Difficult problems that could not be diagnosed with high accuracy are solved.

  Therefore, in the tile deterioration diagnosis apparatus A of the present embodiment, the scraping bar 6 is formed by connecting the metal ball 5 to one end side of the shaft portion 4 via the tension coil spring (tensile elastic member) 9, Further, the support mechanism 7 includes a compression coil spring (compression elastic member) 12 interposed between one end of the cylindrical body 10 and the metal ball 5 of the scraping rod 6. Since the metal ball 5 is provided by the tension coil spring 9 and the compression coil spring 12 so as to be movable back and forth in the direction of the axis O1 and tiltable about the center of the axis O1, there is a slight difference in the tile surface of the inspection target surface. However, the metal ball 5 can be moved over the step while being pressed against the tile surface.

  As a result, it is possible to continuously perform diagnosis (inspection and investigation) without stopping the rubbing operation, and the metal balls 5 are suitably scraped on the tile surface to suppress the generation of noise due to the step. A rubbing sound can be captured, and a highly reliable diagnosis can be performed.

  Further, in the tile deterioration diagnosis method of the present embodiment, the low frequency component of the scratching sound is removed, and the difference in the scratching sound between the healthy part and the deteriorated part such as the float is expanded, thereby making a highly reliable diagnosis. It becomes possible to do.

  Further, the processing operation can be performed relatively easily, and processing can be performed in a short time and at a low cost as compared with frequency analysis or the like.

  As a result, the rubbing method determination process that has conventionally relied on the inspector's sense can be processed automatically and at high speed using a computer, and can be applied to a diagnostic robot or the like.

  As mentioned above, although one embodiment of the tile deterioration diagnosis apparatus and tile deterioration diagnosis method according to the present invention has been described, the present invention is not limited to the above-described embodiment, and may be appropriately selected without departing from the scope of the present invention. It can be changed.

  For example, in the present embodiment, the description has been given on the assumption that the elastic member for tension and the elastic member for compression are each a coil spring. However, a leaf spring, a disc spring, or the like may be applied, and the elastic material for tension according to the present invention may be applied. The member and the elastic member for compression are not necessarily limited to the coil spring.

  In the present embodiment, the tile deterioration diagnosis method according to the present invention includes a rubbing sound recording step for recording rubbing sounds, a low frequency component removing processing step for removing low frequency components from the recorded rubbing sound data, Square process that squares the fuzzing sound data after processing in the frequency component removal processing process and emphasizes the difference between the flaw sound generated in the sound part of the tile and the flaw sound generated in the deteriorated part of the tile, and the square process The rubbing sound data after processing in the process is integrated with the rubbing sound data at arbitrary time intervals, and compared with a preset threshold value to determine the presence / absence of a deteriorated portion of the tile and the position of the deteriorated portion of the tile It was described as comprising a tile deterioration diagnosis step that identifies

  On the other hand, in this tile deterioration diagnosis method, it is possible to make a diagnosis at a high speed without being affected by ambient noise or the driving sound of a robot (tile deterioration diagnosis device). It is also conceivable that the sound becomes a large value with respect to the threshold value, or that it is difficult to make a determination about very slight floating (subtle floating).

In contrast, in the present invention, tile deterioration diagnosis may be performed as follows.
First, before making a diagnosis, a worker identifies a normal part in advance by consulting and confirming in detail, and as shown in FIG. Data is acquired (normal part rubbing sound acquisition step), and LPF processing for removing low frequency components is performed (low frequency component removal processing step).

  Next, the tile surface is inspected by the tile deterioration diagnosis apparatus A, and as shown in FIG. 12A, a scratching sound is recorded (a scratching sound recording step), and the scratching sound recorded in the scratching sound recording unit 3 is recorded. LPF processing for removing low frequency components is performed on the data (low frequency component removal processing step).

  Next, spectral subtraction processing is performed on the diagnostic data acquired by the flaw sound recording step and the low frequency component removal processing step using the normal portion flaw sound profile acquired in advance by the normal portion scratch sound acquisition step and the low frequency component removal processing step. (Spectrum subtraction process step). That is, “(diagnosis data) − (normal part rubbing sound profile)” is performed in the frequency domain, similarly to the noise reduction using the noise profile. Thereby, as shown in FIG.12 (c), spectrum subtraction process data (friction sound data) are obtained.

  Then, as shown in FIG. 13, an arithmetic process for squaring the spectral subtraction data after the spectral subtraction process is performed, and the difference between the sound data of the sound part of the healthy part and the sound data of the deteriorated part is enlarged, and the emphasis process is performed (squares). Processing step).

  Furthermore, the rubbing sound data of the set tile surface range (time range), for example, the rubbing sound data for 1/2 to 1 sheet of tiles is integrated in order, and the processed value is compared with a threshold value. A portion where the fuzzing sound data exceeding the preset threshold is generated is specified as a degraded portion such as a float (tile degradation diagnosis step).

  As a result, it is possible to accurately capture slight floats (subtle floats) and perform tile deterioration diagnosis with higher accuracy than in the present embodiment.

DESCRIPTION OF SYMBOLS 1 Abrasion mechanism part 2 Reciprocating movement mechanism part 3 Abrasion sound recording part 4 Shaft part 5 Metal ball | bowl 5a Projection part 6 Abrasion stick | rod 7 Support mechanism 8 Abrasion stick advancing / retreating mechanism 9 Tension coil spring (elastic member for tension)
DESCRIPTION OF SYMBOLS 10 Cylindrical body 11 Locking member 12 Coil spring for compression (elastic member for compression)
13 attachment member 15 connection member 16 guide member 17 advance / retreat member 18 rubbing rod advance / retreat mechanism body 19 servo motor 20 first link 21 second link 22 travel rail 23 sprocket 24 sprocket 25 rotating member 26 drive motor 27 encoder 28 limit switch A tile Deterioration diagnosis device O1 Abrasion rod axis O4 Cylindrical axis T1 One direction T2 Other direction

Claims (4)

A tile deterioration diagnosis device for diagnosing the presence or absence of deterioration of a tile by detecting a rubbing sound generated by moving a rubbing rod formed with a metal ball on one end side of a shaft portion while pressing the metal ball against the tile surface. Because
A rubbing mechanism having the rubbing rod, a reciprocating mechanism for reciprocating the rubbing mechanism in one direction, and a rubbing sound recording section for capturing the rubbing sound,
The rubbing mechanism portion includes the rubbing rod, a support mechanism for supporting the shaft portion of the rubbing rod, and the support mechanism and the rubbing rod in the other direction along the axial direction of the rubbing rod perpendicular to the one direction. A rubbing rod advance / retreat mechanism for moving and pressing / separating the metal ball against the tile surface;
The rubbing rod is formed by connecting the metal ball to one end side of the shaft portion through an elastic member for tension,
A cylindrical body that inserts the shaft portion of the rubbing rod from one end side so that the respective axes are coaxially arranged, and supports the rubbing rod so as to advance and retreat in the other direction; A locking member that is integrally provided on the other end side of the shaft portion of the rubbing rod inserted through the other end of the cylindrical body and is locked to the other end of the cylindrical body, and one end of the cylindrical body And a compression elastic member interposed between the metal balls of the rubbing rod and the tile deterioration diagnosis device. In the tile deterioration diagnosis apparatus according to claim 1,
The reciprocating mechanism is configured to surround the traveling rail by being wrapped around the traveling rail extending in the one direction, a pair of sprockets attached to both ends of the traveling rail, and the pair of sprockets. An endless turning member arranged to be driven, a driving means for rotating one sprocket, and a turning measurement control means for measuring and controlling the turning amount and turning direction of the turning member. And
The tile deterioration diagnosis apparatus, wherein the rubbing rod advance / retreat mechanism is configured to be engaged with the travel rail so as to advance and retreat in the one direction and to be connected to the rotating member. A tile rod for diagnosing the presence or absence of deterioration of a tile by capturing a rubbing sound generated by moving a rubbing rod formed with a metal ball on one end side of a shaft portion while pressing the metal ball against the tile surface. A deterioration diagnosis method,
A rubbing sound recording step for recording the rubbing sound;
A low-frequency component removal processing step for removing low-frequency components from the scratch-sound data recorded in the scratch-sound recording step;
A square processing step of squaring the scratching sound data after processing in the low frequency component removal processing step, emphasizing the difference between the scratching sound generated in the sound portion of the tile and the scratching sound generated in the deteriorated portion of the tile,
The rubbing sound data after processing in the square process step is integrated with the rubbing sound data at arbitrary time intervals, and compared with a preset threshold value to determine the presence or absence of a deteriorated portion of the tile and to deteriorate the tile. A tile deterioration diagnosis method comprising: a tile deterioration diagnosis step for specifying a position of a portion. In the tile deterioration diagnosis method according to claim 3,
A normal part rubbing sound acquisition step for obtaining pre-specified normal part rubbing sound data;
Spectral subtraction is performed on the diagnostic data obtained by the rubbing sound recording step and the low frequency component removal processing step using the normal portion rubbing sound profile acquired in advance by the normal portion rubbing sound acquisition step and the low frequency component removal processing step. A method for diagnosing deterioration of a tile, comprising: a spectral subtraction process step for performing processing.

Images