JPH0254903B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a peeling detection device for detecting the adhesion state of tiles, etc. attached to the wall surface of a building.

It is dangerous if tiles, etc. that have been attached with mortar to the wall of a building come off and fall. Therefore, conventional peeling detection devices that detect the state of adhesion of tiles, etc. by the sound of impact have been specially developed by the applicant. Kosho 56-20498
Publication No. 57-23221, Publication No. 53-
It has been proposed in 1992 Publication and Utility Model Application Publication No. 10383/1983.

Although these known techniques are effective in themselves, (a) small peels as small as 5 cm in diameter or 7 cm deep;
It is difficult to detect peeling that is deep within a cm of the surface; (b) It takes time to move the detection device, and it is difficult to perform this on walls with many uneven surfaces; (c)
The drawback was that it required time and labor to process data and create drawings.

Further, Japanese Patent Application Laid-Open No. 57-79445 discloses a blow diagnosis device suitable for inspecting the insulation of, for example, generator coils. However, when this known technique is applied to a device for detecting peeling of wall tiles or the like, there is the drawback (c) above.

Therefore, an object of the present invention is to provide a peeling detection device that can detect the size and depth of peeling, is easy to move, and can easily visualize data.

According to the present invention, there is a hanging moving part that is horizontally movable on the upper edge of a wall surface, a striking part that is vertically movably suspended from the moving part, and a hitting tile provided on the striking part. A hammer, a load detector that detects the impact force of the hammer, and a microphone that detects the impact sound of the tile, and from the impact sound detected by the microphone and the impact sound detected by the load detector, the peeled part of the tile and the It is equipped with a microcomputer that displays the peeling depth.

As a result of various studies, the present inventor has found that the extent of peeling of tiles, etc., that is, the size and depth of peeling, can be determined by the loudness of each frequency of the impact sound. Therefore, if the degree of peeling of various tiles on the wall surface is experimentally determined in advance, the degree of peeling, that is, the size and depth, can be determined by comparing the data of healthy parts with the measured frequency data. You can know. In this case, the sound volume of the frequency-specific data may be converted based on the impact data and vibration data when a constant impact force and constant vibration are applied, and then compared with the sound part data.

In this way, the size and depth of peeling can be detected using frequency-specific data, and this can be determined on the X and Y coordinates over the entire wall surface, and the results can be stored, displayed on a monitor, or printed. . Furthermore, for example, the health and peeling of tiles on the wall can be displayed on the monitor.

To determine whether a healthy part or peeling occurs, if the difference in sound level at the frequency where the sound level differs the most and the difference in amplitude are greater than a certain value by comparing the data by frequency and the data in a healthy part, it is determined that the part is peeling. However, if it is below a certain value, it is determined to be healthy.

Therefore, repair work can be carried out directly based on the final data, and the depth to be repaired can also be known in advance.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a peeling detection device embodying the present invention, and shows a tile T attached to a wall W of a building B.
It is shown that an attempt is made to detect the degree of peeling.

The hanging moving part, which is indicated by the reference numeral 1 as a whole, has a plurality of fixing fittings 2 which are fixed by engaging with both sides of a parapet P formed on the roof of the building B, and a plurality of fixing fittings 2 which are fixed on both sides of a parapet P formed on the roof of the building B. A hanging unit 6 having a guide rail 3 fixed to the parapet P and extending above the parapet P, wheels 4 running on the guide rail 3, and an engaging part 5, and having an overall U-shape.
It is equipped with The wall surface W of this hanging unit 6
A pair of rods 7, 7 extending downward are fixed to the sides, and guide wheels 8, 8 are rotatably provided on the rods 7, 7, respectively, to engage with the side surfaces of the parapet P. A pair of arms 9, 9 each extending from the lower side of the parapet P toward the wall surface W are provided so as to be rotatable in a horizontal plane. Pulleys 10, 10 are provided at the ends of the arms 9, 9 on the wall surface W side, respectively, and guide wires 11, 1 are connected to these pulleys 10, 10.
1 is wound around each.

These guide wires 11, 11 are attached with a striking part, the entirety of which is indicated by the reference numeral 12.
A drive unit 13 is provided at the lower ends of the wires 11, 11. Therefore, by operating a motor (not shown) provided in the drive unit 13, the guide wire 11 moves, and the movement of the guide wire 11 causes an impact. The portion 12 is adapted to move up and down. Since the striking part 12 moves up and down along the wall surface W as described above, it has an appropriate number of guide rollers 14.

As shown in FIG. 1a, the striking section 12 is provided with a striking unit U. This striking unit U
1, a guide rod 15 extending laterally from approximately the center of the striking part 12, a moving part 16 that moves in the left-right direction in the drawing along the guide rod 15 by a motor (not shown), and a striking part provided on the moving part 16. It is provided with a hammer 17, a load detector 18 provided at the tip of the striking hammer 17, and a microphone 19 for detecting the striking sound when the tile T is struck with the striking hammer 17.

Therefore, the vertical movement of the striking part 12 and the movement of the moving part 1
Due to the left and right movement of 6, the striking hammer 17 hits the wall surface W.
can be inspected in a planar manner. The above drive unit 1
3 and the movement command of the moving part 16 and the load detector 18
and the signal from the microphone 19 is transmitted to the control unit 2.
0 is sent and received. In other words, the control unit 20 is the control panel 2
1, and various operations are performed on an operation panel 22.
The control unit 20 includes a monitor 23, a floppy disk 24, and a printer 2 for data processing.
5 and a host computer 26.

FIG. 2 shows a block diagram implementing the present invention,
In FIG. 2, parts corresponding to those in FIG. 1 are designated by the same reference numerals.

The hanging unit 6, which is movably installed on the parapet P of the building B, is horizontally movable as described above, but to make the explanation easier to understand, the inspection range of the wall W is shown as a pair of wires 11, 11, and therefore the suspension unit 6 is assumed to be fixed.

The striking part 12 is moved to a predetermined position by a movement command signal from the control part 20, and the movable body 16 is moved to a predetermined position. Then, the striking position detector 30 detects the striking positions X and Y of the striking hammer 17 and sends the coordinate signals to the host computer 26. On the other hand, due to the impact operation of the impact hammer 17, the load detector 18 sends the load, that is, the impact force, and the microphone 19 sends the impact sound to the peeling determining section 31. This peeling determination section determines the size and depth of the peeled portion in a manner described later, and the determination signal is sent to the host computer 26. In this way, the wire 11,
The determination results for each position (each coordinate) between 11 and 11 are stored in the host computer 26, stored in the floppy disk 24, displayed on the monitor 23, and printed by the printer 25.

Next, peeling determination will be explained with reference to FIGS. 3 to 7.

FIG. 3 shows an example of a striking force signal from the load detector 18, with time t plotted on the horizontal axis and striking force F plotted on the vertical axis. The peeling determination section 31 detects the maximum impact force F ₀ .

In Figure 4, the horizontal axis represents time t, and the vertical axis represents sound and amplitude T.
This is an example of a sound signal from the microphone 19. The peeling determination unit 31 determines the maximum amplitude T ₀
Detect.

Figure 5 is a spectral diagram of impact sound, with frequency shown on a log scale on the horizontal axis and sound pressure level on the vertical axis. This is an example of a case in which the values were measured in advance through experiments.

FIG. 6 is a diagram similar to FIG. 5, but this is an example in which there is a 4.5 cm x 4.5 cm rectangular peeling at a depth of 1 cm.

Various examples of the examples shown in FIGS. 3 to 6 are previously stored in the host computer 26 through experiments.

FIG. 7 is a diagram similar to FIGS. 5 and 6, and is an example of a healthy portion without any peeling. This is also stored in the host computer 26 in advance.

Each of these examples differs depending on the size and shape of the building, tiles, etc., so the wall surface to be measured is determined in advance.

Next, the operation of the present invention will be explained with reference to FIG.

First, in measuring whether or not the tile T has peeled off, the tile T is struck with the striking hammer 17 as described above (process P ₁ ). Then, the output from the load detector 18 produces impact data D ₁ shown in FIG. 3, the output from the microphone 19 produces vibration data D ₂ shown in FIG. 4, and frequency-specific data D shown in FIGS. 5 and 6. ₃ is obtained. The separation determination unit 31 extracts the maximum value F ₀ of the impact force, the maximum value T ₀ of the amplitude, the peak sound S ₁ and its frequency F ₁ from these data D ₁ to _{D 3} (process P ₂ ). Also, for example, the data D ₄ of the healthy part shown in FIG. 7 is compared with the data D ₃ (process P ₃ ), and the maximum difference S ₂ and the frequency F ₂ at that time among the sounds of each frequency are collected ( process
_P4 ). Then, the peeling determination unit 31 determines whether the values F ₀ , T ₀ , S ₁ , F ₁ , S ₂ , and F ₂ are healthy or peeled based on the experimental data (process
_P5 ). If it is healthy, a message to that effect is output, stored in the host computer 26, and printed (process
_P6 ). If peeling is determined, the host computer 26 determines the degree of peeling based on the various experimental values described above (process P ₇ ). This value is then stored, displayed on the monitor 23, and printed out by the printer 25 (process P ₈ ). Next, it is determined whether the operation has ended (process P ₉ ), and NO
If , return to process P ₁ . If YES, it ends and moves on to the next operation.

FIG. 9 is an example in which the results of determining the entire wall surface W of the building B in the manner described in connection with FIG. 8 are displayed on the monitor 23. A hatched portion Z in the figure is a portion determined to be peeled off. Therefore, this portion Z only needs to be repaired. The depth of the peeling can be determined from the print data.

As described above, according to the present invention, the extent and position of peeling can be known when detecting peeling on a wall surface, making repair work extremely easy.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a place where peeling of a tile, etc. on a wall surface is detected by a device embodying the present invention, Fig. 1a is an explanatory diagram showing a striking part, and Fig. 2 is an explanatory diagram showing an embodiment of the present invention. FIG. 3 is a diagram showing impact data, FIG. 4 is a diagram showing amplitude data, and FIGS. 5 and 6 are diagrams showing examples of data by frequency when the degree of peeling is different. FIG. 7 is a diagram showing health data, FIG. 8 is a diagram showing a flowchart when the present invention is implemented, and FIG. 9 is a diagram showing an example of a monitor display. 1... Hanging moving part, 12... Hitting part, 13...
... Drive section, 17 ... Impact hammer, 18 ... Load detector, 19 ... Microphone, 20 ... Control section, 23 ... Monitor, 24 ... Floppy disk, 25 ... Printer, 26 ... Host computer, 31... peeling determination section, B... building, W...
...Wall surface, T...tile.

Claims (1)

[Claims] 1. A hanging moving part that can move horizontally on the upper edge of a wall, a striking part that is vertically movably suspended from the moving part, a hammer that strikes tiles provided in the striking part, and a hammer that strikes tiles provided in the striking part. A load detector that detects the impact force, a microphone that detects the impact sound of the tile, and the peeled part and peeling depth of the tile are displayed from the impact sound detected by the microphone and the impact sound detected by the load detector. A device for detecting peeling of wall tiles, etc., characterized in that it is equipped with a microcomputer that performs