JP2004333399A - Device for measuring room dimension, and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for measuring room dimensions for obtaining the shape of the room, requiring no skill. <P>SOLUTION: A distance/azimuth-measuring device, consisting of an azimuth detection means for detecting the azimuth directed by a laser beam of a distance meter, and a pattern table containing the lengths of longitude and latitude of a standard room and the arrangement of mats, laid in the room are set in the room and operated to measure the dimensions of the room, by collecting the distance data to a threshold output from the laser distance meter, together with the azimuth data. By searching the pattern table based on the measured results, the corner P of the room, butt parts of the mats Q and the middle R position are obtained from the arrangement of the laid mats in the room. Then the distance/azimuth-measuring device is operated again, and when the laser beam of the laser distance meter directs the corner part P, butt part Q of the mats and the direction of the center R, a controller for controlling the function of measuring the dimensions of the room collects the distance data up to the threshold, output by the laser distance meter. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Industrial applications]
The present invention relates to an apparatus for optically measuring the size of a room in which a tatami mat is to be laid using a laser distance meter, and is particularly easy to handle and convenient to carry, and automatically measures a measuring point necessary for laying a tatami mat. And accurate measurement.
[0002]
[Prior art]
When laying tatami mats, the indicated dimensions of the room are not necessarily the same as the actual dimensions of the room, so at the time of construction, measure the actual dimensions of the room in advance, and based on the measured values, The tatami mat is cut and processed.
[0003]
As a device for optically measuring the actual dimensions of such a room, a distance / azimuth measuring device proposed in Japanese Patent Application Laid-Open Nos. 2000-310532 and 5-288549 includes a base, A rotary table rotatably mounted on a base, a rotary encoder mounted on the rotary table and generating a number of pulses proportional to a rotation angle of the rotary table with respect to the base, and a rotary encoder. A counter that counts output pulses, a laser distance meter that is mounted on the rotary table and measures the distance to the wall surface (sill) of the room, a count value (corresponding to an azimuth angle) and a laser distance of the counter There is provided storage means for storing the output of the meter as polar coordinate data.
[0004]
This distance / azimuth measuring device is installed in the center of the room, and the azimuth and distance of the room to be measured are measured optically in polar coordinates while rotating the turntable and collected. The data is converted into two-dimensional coordinates to obtain the dimensions of the room.
[0005]
When tatami mats are laid in a room, the layout and layout of the tatami mats are determined according to the shape of the room, such as three tatami mats, four and a half tatami mats, six tatami mats, eight tatami mats, and ten tatami mats. For example, when a tatami mat is laid in a room between six tatami mats, six tatami mats are arranged as shown in FIG. Then, the lower front side of the tatami mating with the sill is cut (removed) according to the sill and the edges are sewn.
[0006]
As described above, when sewing the tatami while removing the tatami, the "corner P", the "butting portion Q" of the room and the "middle (longitudinal midpoint: half point) R" It is necessary to measure the location dimensions. In order to measure more accurately, in addition to the “corner P of the room”, the “butt portion Q of the tatami mat” and the “middle space R”, “the middle of the booth (intermediate point between the butted portion and the middle space: 1/1) It is necessary to accurately measure the dimensions at the position of "4 or 3/4 point) T".
[0007]
[Problems to be solved by the invention]
However, in the conventional room size measuring apparatus and method, the distance / azimuth measuring apparatus is operated to collect distance data every time the laser beam b emitted from the laser distance meter rotates by a certain angle, Each time the data changes by a certain length, azimuth data and distance data are collected.
[0008]
Therefore, the collected data does not necessarily correspond to the “corner P”, the “tatami mat abutment Q”, the “middle R”, and the “middle T”. When collecting the data at the positions of the "tatami mat buttocks Q", "manakanaka R" and "booth middle T", the room "corner P", "tatami mat buttocks Q", "manakanaka""R" and "T" in the booth are marked in advance, and the laser beam b emitted from the laser range finder by operating the distance / azimuth measuring device is directed to the "mark". After confirming it visually, a collection signal was transmitted to the distance / azimuth measuring device, and the azimuth and distance were measured and collected.
[0009]
In this way, the azimuth and distance of the room can be automatically determined without adding a “mark” to the “corner P”, “tatami mat abutment Q”, “middle R”, and “middle T”. And no data could be collected. Therefore, the dimension measuring device according to the present invention determines the positions of the "corner P", the "tatami mating portion Q", the "middle R", and the "middle T" of the room necessary for laying such tatami mats. This is conceived to automatically measure the shape of a room represented by connecting line segments.
[0010]
[Means for Solving the Problems]
The room size measuring device of the present invention is a laser range finder mounted on a turntable, and an azimuth angle detection unit that detects an azimuth angle of a laser beam of the laser range finder from the rotation angle of the turntable, A distance / azimuth measuring device comprising a motor for rotating the turntable, a pattern table storing the length and width of a standard room and the arrangement of tatami mats to be laid in the room, and the distance / azimuth measuring device Is installed in a room and operated, the distance data to the threshold output from the laser rangefinder is collected together with the azimuth data obtained by the azimuth detection means, and the dimensions of the room are measured. From the layout of the tatami mat to be laid out in the room by searching the pattern table by dimensions, obtain the corners of the room necessary for laying the tatami mat, the butt of the tatami mat, and the position in the middle, and then obtain the distance and azimuth angle Measurement When the laser beam from the laser rangefinder is pointed in the direction of the corner of the room, the butt of the tatami mat, and the middle of the room, the distance data from the laser rangefinder to the threshold is collected. And a control device for controlling the operation of measuring the size of the room.
[0011]
A room size measuring method according to the present invention includes a laser range finder mounted on a turntable, and an azimuth angle detector for detecting an azimuth of a laser beam directed by the laser range finder from a rotation angle of the turntable with respect to a base. Means, a motor for rotating the turntable, and a distance and azimuth angle measuring device comprising a pattern table storing the length and width of a standard room and the arrangement of tatami mats to be laid in the room, installed in the room, A first step of operating the distance / azimuth measuring device, collecting distance data to the threshold output from the laser distance meter together with the azimuth data obtained by the azimuth detecting means, and measuring the dimensions of the room; And a second step of searching the pattern table based on the dimensions of the room obtained in the first measurement step to obtain the arrangement of tatami mats to be laid in the room. of The third step of obtaining the corner of the room, the butt of the tatami mats, and the position in the middle necessary for the immersion, and re-operating the distance / azimuth measuring device, the laser beam of the laser range finder is turned on. And a fourth step of collecting the distance data to the threshold output from the laser range finder and measuring the dimensions of the room when oriented in the direction obtained in the third step.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in the perspective view of FIG. 1, a room size measuring apparatus 1 of the present invention has a circular base 2 having three legs 21 and a large gear 22 fixed concentrically around the base. A circular turntable 3 rotatably mounted on the stand 2 is provided.
[0013]
The turntable 3 has a rotary encoder 31 for detecting a rotation angle of the turntable 3 with respect to the base 2, and a small gear 39 meshing with the large gear 22 of the base 2, and a motor 32 for rotating the turntable 3. , A laser rangefinder 4, and a battery for operating the device, a circuit board 5 incorporating a signal processing circuit, an operation unit 33 such as a keyboard, a display unit 34 for displaying input / output data, And a connector 35 to be taken out by another device.
[0014]
As shown in FIG. 2, the signal processing circuit includes a CPU 50 for controlling the entire apparatus, a ROM 51 for storing a processing program, a RAM 52 for temporarily storing data, and a counter for counting pulses generated from the rotary encoder 31. 54, an SIO 55 for receiving distance data output from the laser distance meter 4 or sending data to an external device, a control circuit 53 for controlling the motor 32, and the like.
[0015]
Further, a remote control receiving unit for remotely controlling the dimension measuring device 1 by operating the remote control transmitting device 9 by radio waves or light beams is provided.
[0016]
As the laser distance meter 4 to be mounted on the turntable 3, use the "laser distance sensor LDS-1" available from the Swiss Leica Geosystems Inc. modules "DISTO pro 4 ^a" Murakami Giken industries incorporating can do. This laser range finder has, as output data, "distance data" indicating a distance to a target, "reflection intensity data" indicating the intensity of a reflected light beam received, and the like, and any one of the data is output by a command. Mode can be selected.
[0017]
The pointing direction (corresponding to the azimuth angle) of the laser beam emitted from the laser range finder 4 can be collected from the count value of the pulses output from the rotary encoder 31. The collected “azimuth data” is stored in the RAM 52 together with the “distance data”.
[0018]
The signal processing circuit has a pattern table that stores the length and width of standard rooms such as three-tatami mats, four-and-a-half mats, six-tatami mats, eight-tatami mats, and ten-tatami mats, and the arrangement of tatami mats laid in the room. Have.
[0019]
Next, using the dimension measuring device 1 configured as described above, the “corner P”, “tatami mating portion Q”, “middle middle R”, “booth” A method for obtaining a room dimensional diagram represented by a line segment connecting “middle T” will be described.
[0020]
Step 1M: First, a method of manually performing an operation of acquiring a room shape will be described. As shown in the plan view of FIG. 3, the dimension measuring device 1 is installed in the center of the room, the remote control transmitting device 9 is operated to operate the dimension measuring device 1, and the laser beam radiated from the laser distance meter visually. Every time b is directed in a direction in which a line segment of one side can be acquired near the corner of the room, the remote controller transmitting device 9 is operated to collect distance data and azimuth data of the point and store it in the RAM 52. . For example, when the shape of a room is a quadrangle, distance data and azimuth data of two points near both ends of four sides are collected. That is, eight points of data are collected.
[0021]
Step 1A: A method of automatically performing an operation of acquiring a room shape will be described. As in Step 1M, the dimension measuring device 1 is installed in the center of the room, and the dimension measuring device 1 is operated, and every time the laser beam b emitted from the laser range finder rotates by a certain angle, or when the distance data is By collecting distance data and azimuth data each time the length changes, a room shape is automatically collected in polar coordinates.
[0022]
Step 2: Since a line segment on each side can be obtained from the data collected in step 1M or 1A, a point where two line segments sandwiching each corner intersect is indirectly measured as a virtual corner. be able to. Then, the collected corner data is stored in the RAM 52.
[0023]
Step 3: The shape and size of the room can be obtained by converting the collected polar coordinate data into two-dimensional coordinate data, and the data is stored in a pattern table using the two-dimensional coordinate data. By searching the vertical and horizontal lengths of the various rooms and the arrangement of the tatami mats to be laid in the room, and extracting the most similar pattern, the type of the room and the arrangement of the tatami mats measured in step 1M or 1A are automatically determined. Can be detected.
[0024]
Step 4: The type of room and the arrangement of the tatami mats are determined by the search in step 3, and the positions of the “tatami mating part Q” and the “middle Naka R” in contact with the threshold are determined. For example, when the search result is between six tatami mats, as shown in FIG. 4, the position where the long side is divided into four and the position where the short side is divided into three are “tatami mating part Q” and “ It can be seen that it corresponds to the position of "R". In addition, it is understood that the long side is divided into eight and the short side is divided into six, which corresponds to the position of the "booth middle T" in addition to the "tatami abutment Q" and the "middle middle R".
[0025]
As described above, the shape and size of the room can be roughly measured by the first measurement in Steps 1 to 4, and the arrangement of the tatami mats to be laid is determined. Rough data at the positions of the abutting portion R, the middle R, and the middle T can be obtained.
[0026]
Step 5: Perform the second measurement based on the data of the “corner P”, “tatami mat abutment Q”, “middle R”, and “middle T” obtained by the first measurement. . In the second measurement, the dimension measuring device 1 installed in the center of the room is operated again, and the laser beam emitted from the laser distance meter is calculated based on the counted value of the pulses output from the rotary encoder 31. Each time b determines that it is oriented in the direction of “corner P”, “tatami abutment Q”, “middle R”, “middle T”, distance data is collected together with its azimuth data. By doing so, the shape of the room represented by the line connecting the "corner P", "tatami mat abutment Q", "middle R" and "middle T" in the polar coordinates is automatically set. Can be collected. Then, the collected data is stored in the RAM 52.
[0027]
In particular, the "corner" of a room needs to be measured accurately. As proposed in Japanese Patent Application No. 2002-381828 filed earlier, as shown in FIG. 5A, a linear reflector 61 having a high reflectance and two low reflectances (black) sandwiching the linear reflector 61 are provided. The corner measurement marker 6S, which has the flat surface 63 and is bent at a right angle with the linear reflector 61 as a valley line, is installed at the "corner" to suppress reflection near the "corner" and to provide high reflection. What is necessary is just to comprise so that it may measure using only the reflected light reflected from the linear reflector 61 of the rate.
[0028]
By converting the polar coordinate data collected in step 5 into two-dimensional coordinate data, the "corner P" of the room necessary for laying the tatami mat, the "butting portion Q of the tatami mat", "the middle R", " A room dimensional diagram shown in FIG. 4 expressed by a line segment connecting "the booth middle T" can be obtained.
[0029]
As shown in the plan view of FIG. 6, when the room has corner pillars and center pillars, in the second measurement, the corner pillars and center pillars are ignored and “corner P” and “tatami mating After measuring the “section Q”, “middle middle R”, and “middle middle T”, in the third measurement, corner pillars and middle pillars are measured. At this time, as shown in FIG. 5A, the linear reflector 61 has a high reflectivity linear reflector 61 and two low reflectivity flat surfaces 63 sandwiching the linear reflector 61. As shown in FIG. 5B, a corner measurement marker 6S bent at a right angle using the linear reflector 61 as a ridge is used. It is installed at the “corner” or “corner” of the corner pillar or middle pillar to suppress the reflection near the linear reflector 61, and only the reflected light reflected from the linear reflector 61 having a high reflectivity is provided. What is necessary is just to configure so that it may be used for measurement.
[0030]
When the protruding length of the corner pillar or the center pillar is short, it is difficult to provide the corner measurement marker 6S or the corner measurement marker 6K at the corner or corner of the pillar. In such a case, as shown in FIG. 7, a high-reflectance flat plate 9 having an adhesive back surface is attached to one surface of the pillar protrusion, and a line connecting two points c and d on the flat plate 9 is attached. The intersection of the extension of this line and the line connecting the two points a and b of the threshold is defined as a valley line A, and a flat plate 9 having an adhesive back surface is attached to the other surface of the pillar projection. A line segment connecting the two points e and f on the flat plate 9 is obtained, and a line segment connecting the extension line of the line and the two points g and h of the threshold and the intersection are defined as a valley line C, and the two points c and d are determined. The intersection of the connecting line segment and the line segment connecting the two points e and f may be the ridge line of the pillar.
[0031]
In addition, even in the measurement of a room where there is no corner pillar or middle pillar, the extension lines of the two sides including the corner intersect as described with reference to FIG. 3 without using the corner measurement marker. The intersection of the two may be the corner.
[0032]
【The invention's effect】
As is clear from the description based on the above embodiments, according to the room size measuring apparatus of the present invention, the lower front side of the tatami mating with the sill is cut (hauled) according to the sill and the edges are sewn. Skilled in the shape of the room expressed by the line connecting the "corner", "butting part of tatami", "middle", and "middle" in the room required for laying tatami when sewing Can be obtained automatically without the need.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a room size measuring apparatus according to the present invention;
FIG. 2 is a block diagram of a control circuit used in the device shown in FIG. 1;
FIG. 3 is a plan view showing a state where the dimensions of a room are roughly measured using the apparatus of the present invention;
FIG. 4 is a dimensional view of the room represented by a line connecting the “corner”, “butt of tatami”, “middle”, and “middle” in the room necessary for laying the tatami;
FIG. 5 is a perspective view showing an example of a corner measurement marker and a corner measurement marker.
FIG. 6 is a plan view showing a state in which the dimensions of a room where corner pillars and prisms are present are measured using the apparatus of the present invention;
FIG. 7 is a perspective view showing a state of measuring a corner pillar or a middle pillar having a short protrusion length.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dimension measuring device 2 Base 3 Turntable 4 Laser distance meter 5 Signal processing circuit 9 Remote control transmitting device 31 Rotary encoder 32 Motor 33 Operation unit such as keyboard 34 Display unit for displaying input / output data 35 Connector 6S Marker for corner measurement 6K Corner measurement marker 61 High reflectance linear reflector 63 Low reflectance plane

Claims (2)

A laser range finder mounted on a turntable, azimuth angle detection means for detecting an azimuth angle at which the laser beam of the laser range finder is directed from the rotation angle of the turntable, a motor for rotating the turntable, Distance and azimuth measuring device consisting of a pattern table storing the length and width of a typical room and the arrangement of tatami mats to be laid in the room,
The distance / azimuth measuring device is installed and operated in a room, and distance data to the threshold output from the laser rangefinder is collected together with the azimuth data obtained by the azimuth detecting means to measure the dimensions of the room. From the layout of the tatami mat to be laid in the room by searching the pattern table with the measured dimensions of the room, the corners of the room necessary for laying the tatami mats, butting portions of the tatami mats, and positions in the middle were obtained. After that, the distance and azimuth angle measuring device is operated again, and when the laser beam of the laser distance meter is directed to a corner of a room, a butt portion of a tatami, a direction in the middle, it is output from the laser distance meter. And a control device for controlling an operation of collecting distance data to the threshold and measuring the size of the room. A laser range finder mounted on a turntable, azimuth angle detection means for detecting an azimuth angle at which the laser beam of the laser range finder is directed from the rotation angle of the turntable, a motor for rotating the turntable, A distance / azimuth measuring device consisting of a pattern table storing the length and width of a typical room and the arrangement of tatami mats to be laid in the room is installed in the room,
A first step of operating the distance / azimuth measuring device, collecting distance data to the threshold output from the laser distance meter together with the azimuth data obtained by the azimuth detecting means, and measuring the dimensions of the room; When,
A second step of searching the pattern table according to the dimensions of the room obtained in the first measurement step to obtain an arrangement of tatami mats to be laid in the room;
A third step of obtaining the corners of the room necessary for laying the tatami mats, the butting portions of the tatami mats, and the positions in the middle from the arrangement of the tatami mats obtained in the search step;
When the distance / azimuth measuring device is operated again and the laser beam of the laser distance meter is directed in the direction obtained in the third step, the distance data to the threshold output from the laser distance meter is obtained. A fourth step of collecting and measuring the dimensions of the room;
A method for measuring the dimensions of a room, characterized by passing through.

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