JP2021021638A - Sprayed material thickness measuring instrument - Google Patents

Abstract

To solve the problem in which: sprayed material thickness measurement is generally carried out in a system of measuring thickness in spots, and in detecting the thickness of a sprayed material sprayed over a wide range, the number of measurement points is increased, and thus not all measurement results at the points cannot be obtained; the operations are generally carried out manually and lack quantitativeness.SOLUTION: A sprayed material thickness measuring instrument and measuring method comprise: an area sensor that can measure the distance between a measuring instrument and a sprayed material in a designated area on a wall surface; a storage unit that stores information on the measurement; and a calculation control unit that calculates the thickness of the sprayed material from the information on the measurement. The sprayed material thickness measuring instrument and measuring method calculate the distance to the wall surface known in advance or the measured distance to the wall surface and the measured distance to the sprayed material, and quantitatively measure the thickness of the sprayed material.SELECTED DRAWING: Figure 3

Description

The present invention relates to a measuring instrument and a measuring method for the thickness of a sprayed material.

Some of them realize a predetermined function by applying a sprayed material to the wall surface of a building or the like and hardening it. For example, foamed sponge-like heat insulating materials such as urethane, polyethylene, and phenol used for the walls of houses, fiber-based heat insulating materials such as glass wool, rock wool, and cellulose fibers, road pavements, and slopes. , Asphalt used for cliffs and slopes, mortar, cement, construction materials typified by concrete, etc. Such a sprayed material needs to be coated or cured with a predetermined thickness in order to obtain a predetermined function and performance, and it is necessary to measure the thickness of the coated material.

Conventionally, as this kind of invention, the thickness of the urethane heat insulating material sprayed on the wall surface of a house as shown in JP-A-2016-97073 (Patent Document 1) and JP-A-2008-298730 (Patent Document 2). There was something about the confirmation method.

Patent Document 1 has a pin formed at a non-sharp tip, a pressing portion, and a display portion, and the pin does not damage the moisture-permeable waterproof sheet or the ventilation layer securing member on the back surface of the sponge-like heat insulating material. It is stated that it can be confirmed whether the thickness of the heat insulating material is more than the specified value.

Patent Document 2 has a measuring surface that can come into contact with a measuring needle for piercing a heat insulating material, and has a main body that supports the measuring needle with the tip of the measuring needle protruding from the measuring surface by a predetermined length. , An ink guide portion provided on the tip side including the measurement surface of the main body portion and an ink holding portion arranged adjacent to the ink guide portion of the main body portion and supplying the ink guide portion are provided, and a measurement needle is provided as a heat insulating material. It is described that the ink is configured to adhere to the surface of the heat insulating material when it is pierced and abutted.

Japanese Unexamined Patent Publication No. 2016-97073 Japanese Unexamined Patent Publication No. 2008-298730

In the techniques described in Patent Documents 1 and 2, the thickness of the foamed sponge-like heat insulating material, for example, urethane heat insulating material is measured pinpointly. When sprayed over a wide area such as the wall surface of a house, the thickness of the entire wall surface requires a huge number of measurements, which takes a lot of time. In addition, since these measurements are self-checked by field workers, they largely depend on the ability of the workers, and confirmation by a third party is also required.

Further, the thickness data measured by the above technique must be manually recorded, which requires an enormous amount of time, so that there is a problem that it is difficult to keep the measurement results at all points.

An object of the present invention is to provide a means for efficiently and quantitatively measuring and recording the thickness of a sprayed material in a wide range without relying on the ability of an operator.

In the present invention, in order to solve the above problems, the sprayed object thickness measuring instrument in the embodiment stores an area sensor capable of measuring the distance between the measuring instrument and the sprayed object in a designated area on the wall surface and the measured information. It is equipped with a storage unit and an arithmetic control unit that calculates the thickness of the sprayed object from the measured information, and by calculating the distance to the wall surface that is known or measured in advance and the distance to the measured sprayed object. , The thickness of the sprayed material can be known quantitatively.

Alternatively, the sprayed object thickness measuring instrument in the embodiment includes a spot sensor capable of measuring the distance between the measuring instrument and the wall surface in a spot, and an area sensor capable of measuring the distance between the measuring instrument and the wall surface in a designated area of the wall surface. , A storage unit that stores the information measured by each of the above-mentioned sensors, and a calculation control unit that calculates the thickness of the sprayed object from the measured information, and uses a plurality of distance information measured at the spot to measure the measuring instrument and the wall surface. Is corrected in parallel, and the thickness of the sprayed material at the spot is quantitatively measured.

Alternatively, the inclination of the measuring instrument is corrected and the thickness is calculated. It is characterized in that the thickness at an arbitrary point in the designated area can be quantitatively measured from the result of measuring the thickness measured at the spot and the distance between the measuring instrument and the wall surface in the designated area.

According to the present invention, the thickness of a sprayed object can be quantitatively measured at an arbitrary point in a wide area with one measurement. In addition, the measurement result can be recorded, and by connecting to a display unit or a PC and displaying it with a tool such as 3D CAD, the measurement result can be visualized and can be easily confirmed by the worker or the work requester.

It is a figure which looked at the sprayed material thickness measuring instrument 101 in Example 1 from the front. It is a control block diagram of the sprayed material thickness measuring instrument 101 in Example 1. FIG. FIG. 5 is a side view of the sprayed material thickness measuring instrument and the wall surface after spraying the sprayed material according to the first embodiment. FIG. 5 is a side view of the sprayed material thickness measuring device 101 and the wall surface 105 according to the first embodiment. It is a figure which looked at the sprayed material thickness measuring instrument 101 in Example 2 from the front. It is a control block diagram of the sprayed material thickness measuring instrument 101 in Example 2. FIG. FIG. 5 is a side view of the sprayed object thickness measuring instrument and the wall surface after spraying the sprayed object in Example 2. It is a figure which looked at the sprayed material thickness measuring instrument 101 and the wall surface 105 in Example 2 from the side. It is a side view when the sprayed material thickness measuring instrument 101 and the wall surface 105 in Example 2 are tilted. This is the case where the wall surface 105 in the second embodiment has irregularities. FIG. 5 is a side view of the sprayed material thickness measuring instrument and the wall surface after spraying the sprayed material in Example 3.

The details of the embodiment of the sprayed material thickness measuring method according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of the sprayed material thickness measuring instrument 101 according to the first embodiment. The sprayed object thickness measuring device 101 is composed of an area sensor 102 capable of measuring a distance over a wide range.

The area sensor is a sensor that can measure the distance to each point in the measurement area over a wide range, such as a stereo camera, a structured light camera, and a TOF camera (Time Of Flight Sensor).

FIG. 2 is a block diagram of the sprayed material thickness measuring instrument 101. The area sensor 102, an arithmetic control unit 201 that calculates the thickness of the sprayed object from the sensor information, a storage unit 202 that records each distance information and thickness measurement data, and information necessary for various corrections described later, an external device, and the like. It is composed of an interface unit 203 for exchanging data.

The interface unit can also be connected to a device such as a PC to visually represent the thickness measurement result as three-dimensional data on the device side.

The thickness measuring method in the sprayed material thickness measuring device 101 will be described below.

FIG. 3 is a side view of the sprayed material thickness measuring instrument 101 and the wall surface 105 after spraying the sprayed material 401. From the measurement result of the area sensor 102 and the distance between the sprayed object thickness measuring device 101 and the wall surface 105, the distance to each measurement point on the surface of the sprayed object thickness measuring device 101 and the sprayed object 401, which is the measurement result of the area sensor 102. Subtract to calculate the thickness of the sprayed material.

The area sensor is used for each point in the measurement area plane from the area sensor 102, for example, the distance 404a to the point A, the distance 404b to the point B, and the distance 404c to the point C on the surface of the sprayed object 401. Measure as the distance of. Since the measurement area of the area sensor is a surface, there is a difference in distance between the center and the edge by the viewing angle, but it is automatically corrected in the area sensor. That is, in FIG. 3, the distance between the area sensor 102 and the point A is measured not as the distance indicated by the diagonal line 102a1, but as the linear distance 404a between the surface 110 on which the area sensor 102 is arranged and the point A.

The distance between the sprayed object thickness measuring device 101 and the wall surface 105 is input to the storage unit 202 from a sketch or the like. Further, FIG. 4 is a side view of the sprayed material thickness measuring device 101 and the wall surface 105. The sprayed object thickness measuring device 101 may be used to measure the distance 405 to the wall surface 105 in advance with the area sensor 102 before spraying.

FIG. 5 is a front view of the sprayed material thickness measuring instrument 101B according to the second embodiment. The sprayed object thickness measuring device 101B includes spot sensors 103a, 103b, 103c that measure the distance to the wall surface at the spot, and an area sensor 102B that can measure the distance over a wide range. The spot sensors 103a, 103b, 103c and the area sensor 102B are arranged on the same plane.

A spot sensor is a sensor that can measure the distance to a wall surface through a sprayed object, such as an ultrasonic sensor with high directivity or a radar with high directivity. The area sensor 102 is the same as that described in the first embodiment.

FIG. 6 is a control block diagram of the sprayed material thickness measuring device 101B. The spot sensors 103a, 103b, 103c, the area sensor 102B, the arithmetic control unit 201B that calculates the thickness of the sprayed object from the acquired information of these sensors, each distance information, the thickness measurement data, and the information necessary for the correction described later are recorded. It is composed of a storage unit 202B. The sprayed object thickness measuring device 101B has an interface 203B that can be connected to a device such as a display unit or a PC, and the thickness measurement result can be visually represented as three-dimensional data on the device side.

The thickness measuring method in the sprayed material thickness measuring device 101B will be described below.

FIG. 7 is a side view of the sprayed material thickness measuring instrument 101B and the wall surface 105B after spraying the sprayed material 401B. The distances 301a, 301b, and 301c to the wall surface are measured by the spot sensors 103a, 103b, and 103c, respectively. Further, the distance 404B (404aB, 404bB, 404cB) to the spray surface is measured by the area sensor 102B in the same manner as in the first embodiment. By calculating the difference between the distances between the two, it is possible to calculate the thicknesses 403a, 403b, and 403c of the sprayed material at each location.

FIG. 8 is a side view of the sprayed material thickness measuring instrument 101B and the wall surface 105B in the second embodiment. When the measuring surface 110B and the wall surface 105B of the sprayed material thickness measuring device 101B are parallel, one spot sensor may be used.

FIG. 9 is a side view when the measurement surface of the sprayed material thickness measuring device 101B in the second embodiment is tilted with respect to the wall surface 105B. When the measurement surface of the sprayed object thickness measuring device 101B and the wall surface 105B are tilted, the tilt θ303 can be obtained by calculating the difference between the respective measurement distances by using a plurality of spot sensors. By correcting and calculating the measurement distance obtained by the area sensor 102B using this result, it is possible to accurately calculate the thickness of the sprayed object even when it is tilted. Alternatively, the distance may be measured again by adjusting the sprayed material thickness measuring device 101B so as to be parallel to the wall surface 105B from the obtained inclination θ303.

If the wall surface 105a has irregularities as shown in FIG. 10, the accurate distance cannot be measured by the same correction or adjustment as in FIG. 9, but the sensor 103a, which measures the distance to the sprayed object at the spot using the area sensor 102B, By comparing with the results of 103b and 103c, it is possible to detect the unevenness of the wall surface 105a. These detection results are recorded in the storage unit 202.

In Examples 1 and 2, the distance between the sprayed material thickness measuring device and the wall surface on which the sprayed material is formed is acquired by using a spot sensor, a sketch, or the like, or by measuring the distance before spraying the sprayed material. However, in some cases, it may be difficult to obtain the distance to the wall surface in this way. In this embodiment, even in such a case, the thickness of the sprayed object is measured by acquiring the distance from the wall surface.

FIG. 11 is a side view of the sprayed material thickness measuring instrument 101C and the wall surface 105C after spraying the sprayed material in Example 3.

Reflectors 1401a, 1401b, 1401c are added to the configuration of the first embodiment at arbitrary positions from the tips of a plurality of measuring needles 601a, 601b, 601c and measuring needles 601a, 601b, 601c. The reflectors 1401a, 1401b, and 1401c are plates that can be easily recognized as an object by the area sensor 102C.

In this configuration, since the length from the tips of the measuring needles 601a, 601b, 601c to the reflectors 1401a, 1401b, 1401c is known, the position of the wall from the distance 1402 (1402a, 1402b, 1402c) measured by the area sensor 102C. Can be known. The thickness of the sprayed object (403a, 403b, 403c) can be calculated from this and the distance to the sprayed object 404C measured at the same time.

Further, the inclination between the sprayed material thickness measuring device and the wall surface can be obtained by calculating the difference between the measured distances of the distances 1402a, 1402b, and 1402c measured by the area sensor 102C. By further calculating this result with the measurement distance of the area sensor 102C, it is possible to accurately calculate the thickness of the sprayed object even when it is tilted. Alternatively, the distance may be measured again by adjusting the sprayed material thickness measuring device 101C so as to be substantially parallel to the wall surface 105C from the obtained inclination.

When the scale is displayed on the measuring needles 601a, 601b, and 601c in this configuration, the operator can confirm the insertion amount on the spot. That is, the operator can check the thickness of the sprayed object 401 on the spot. Further, instead of the scale, a display unit may be provided for display.

101 ... Sprayed material thickness measuring device 101B ... Sprayed material thickness measuring device 101C ... Sprayed material thickness measuring device 102 ... Area sensor 102B ... Area sensor 102a1 ... Virtual line 102a1B ... Virtual line representing the area measured by the area sensor 102a1B ... Area measured by the area sensor Virtual line 102a1C ... Virtual line 102a2 ... Representing an area measured by an area sensor Virtual line 102a2B ... Representing an area measured by an area sensor Virtual line 102a2C ... Representing an area measured by an area sensor Line 103a ... Spot sensor 103b at reference point A ... Spot sensor 103c at reference point B ... Spot sensor 105 at reference point C ... Wall surface 105B ... Wall surface 105C ... Wall surface 110 ... Area sensor measurement surface 110B ... Area sensor measurement surface 201 ... Calculation control unit 201B ... Calculation control unit 202 ... Storage unit 202B ... Storage unit 203 ... Interface 203B ... Interface 301a ... Measurement distance between the sprayed object thickness measuring device and the sprayed object surface at the reference point A 301b ... Sprayed material thickness at the reference point B Measurement distance between the measuring instrument and the surface of the sprayed object 301c ... Measurement distance between the measuring instrument and the surface of the sprayed object at the reference point C 302a ... The surface of the sprayed object when the sprayed object thickness measuring instrument at the reference point A is tilted by θ Measurement distance 302b ... Measurement distance from the sprayed object surface when the sprayed object thickness measuring instrument at the reference point B is tilted by θ 302c ... The sprayed object surface when the sprayed object thickness measuring instrument at the reference point C is tilted by θ Measurement distance 303a ... Actual distance from the sprayed object surface when the sprayed object thickness measuring instrument at the reference point A is tilted by θ 303b ... Sprayed object surface when the sprayed object thickness measuring instrument at the reference point B is tilted by θ Actual distance 303c ... Actual distance to the surface of the sprayed object when the sprayed object thickness measuring instrument at the reference point C is tilted by θ 401 ... Sprayed object 401B ... Sprayed object 401C ... Sprayed object 403 ... Sprayed object thickness 403a ... Reference Thickness of sprayed material at point A 403b ... Thickness of sprayed material at reference point B 403c ... Thickness of sprayed material at reference point C 404 ... Distance between sprayed material thickness measuring instrument and surface of sprayed material measured by area sensor 404B ... Area sensor Distance between the sprayed material thickness measuring device and the sprayed material surface measured in 404C ... Distance between the sprayed material thickness measuring device and the sprayed material surface measured by the area sensor 404a ... The sprayed material thickness measuring device measured by the area sensor at point A. Distance to the surface of the sprayed object 404aB ... Distance between the sprayed object thickness measuring instrument measured by the area sensor at point A and the surface of the sprayed object 4 04b ... Distance between the sprayed material thickness measuring instrument measured by the area sensor at point B and the surface of the sprayed material 404b ... Distance between the sprayed material thickness measuring instrument measured by the area sensor at point B and the surface of the sprayed material 404c ... Area at point C Distance between the sprayed material thickness measuring device measured by the sensor and the sprayed material surface 404 cB ... Distance between the sprayed material thickness measuring device and the sprayed material surface measured by the area sensor at point C 405 ... Sprayed material thickness measuring device measured by the area sensor Distance between 601a and the wall surface 601a ... Measuring needle at reference point A 601b ... Measuring needle at reference point B 601c ... Measuring needle at reference point C 1401a ... Reflecting plate of measuring needle at reference point A 1401b ... Measuring needle at reference point B Reflector 1401c ... Reflection plate 1402a of the measuring needle at the reference point C ... Distance between the sprayed object thickness measuring instrument and the reflecting plate at the reference point A 1402b ... Distance between the sprayed object thickness measuring instrument and the reflecting plate at the reference point B 1402c ... Reference Distance between the sprayed object thickness measuring instrument and the reflector at point C

Claims (6)

A sprayed material thickness measuring device that is installed at a position facing a sprayed object formed on a wall surface and measures the thickness of the sprayed material from the wall surface.
With an area sensor that can measure the distance to the surface of the sprayed object within an arbitrary area,
A storage unit that stores the distance information in the measured area and the distance to the wall surface.
A sprayed object thickness measuring device having an arithmetic control unit that calculates the thickness of the sprayed object from distance information to the surface of the sprayed object. The sprayed material thickness measuring instrument according to claim 1.
A spot sensor capable of measuring the distance to a specific point on the wall surface is provided.
A sprayed material thickness measuring device, characterized in that the thickness of the sprayed material is calculated and obtained from the measurement results of the area sensor and the spot sensor. The sprayed material thickness measuring instrument according to claim 2.
Equipped with a plurality of the spot sensors
From the measurement results of the plurality of spot sensors, the inclinations of the sprayed object thickness measuring device and the wall surface are obtained and stored.
A sprayed material thickness measuring device, characterized in that tilt correction is added to the measurement results of the area sensor and the spot sensor, and the thickness of the sprayed material is calculated and obtained. The sprayed material thickness measuring instrument according to claim 1.
The distance information between the sprayed material thickness measuring device and the wall surface stored in the storage unit is characterized in that it is obtained by measuring with the area sensor before spraying the sprayed material on the wall surface. Sprayed material thickness measuring instrument. The sprayed material thickness measuring instrument according to claim 1.
A measuring needle provided with a reflector at a predetermined position from the tip is pierced into the sprayed object, the distance to the reflector is measured with the tip in contact with the wall surface, and the distance from the tip of the measuring needle to the position of the reflector is measured. By adding the distances, the distance between the sprayed material thickness measuring device and the wall surface is obtained.
A sprayed material thickness measuring instrument characterized by detecting the thickness of a sprayed material at an arbitrary point in a specified area. The sprayed material thickness measuring instrument according to claim 5.
Measure the distance of the measuring needle to the reflector and
From the measurement result, the inclination between the sprayed material thickness measuring device and the wall surface is obtained and stored.
Using the above result, tilt correction is added to the distance information after spraying the sprayed object.
A sprayed material thickness measuring instrument characterized by detecting the thickness of a sprayed material at an arbitrary point in a specified area.