JP4178289B2 - Apparatus and method for measuring room dimensions - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus for optically measuring the size of a room in which a tatami is laid using a laser rangefinder, and is particularly easy to handle and convenient to carry, and automatically determines the measurement points necessary for laying a tatami. In addition, it is configured to measure accurately.
[0002]
[Prior art]
When laying tatami mats, the actual dimensions of the room are not necessarily the same as the actual dimensions of the room, so the actual dimensions of the room should be measured in advance before construction. The tatami mats are cut together.
[0003]
As a device for optically measuring the actual dimensions of such a room, a distance / azimuth measuring device proposed by Japanese Patent Laid-Open No. 2000-310532 and Japanese Patent Laid-Open No. 5-288549 has a base, A rotary base that is rotatably mounted on the base, a rotary encoder that is placed on the rotary base and generates a number of pulses proportional to the rotation angle of the rotary base relative to the base, and the rotary encoder A counter that counts the output pulses, a laser rangefinder that is placed on the turntable and measures the distance to the wall (sill) of the room, a counter value (corresponding to the azimuth angle), and laser distance Storage means for storing the output of the meter as polar coordinate data is provided.
[0004]
This distance and azimuth measuring device is installed in the center of the room, and the azimuth and distance of the room to be measured are collected by optical measurement with polar coordinates while rotating the turntable. Data is converted into two-dimensional coordinates to obtain room dimensions.
[0005]
When laying tatami in a room, the arrangement and allocation of tatami mats are determined according to the shape of the room, such as between 3 tatami mats, 4 tatami mats, 6 tatami mats, 8 tatami mats, and 10 tatami mats. For example, when tatami mats are laid in a room between six tatami mats, six tatami mats are arranged as shown in FIG. And the lower front side of the tatami that touches the sill is cut according to the sill (disentangling) and the edges are sewn.
[0006]
In this way, when sewing the tatami mat while removing the tatami mat, the “corner portion P”, “tatami mating portion Q” and “intermediate (longitudinal midpoint: 1/2 point) R” It is necessary to measure the dimensions of the position. For more accurate measurement, in addition to “room corner P”, “tatami mating portion Q” and “intermediate R”, “booth middle (intermediate point between the butting portion and the middle: 1 / It is necessary to accurately measure the dimension of the position of “4” or “3/4 point” T ”.
[0007]
[Problems to be solved by the invention]
However, in the conventional room dimension 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, The distance data was collected together with the azimuth data every time the data changed by a certain length.
[0008]
Therefore, the collected data does not necessarily correspond to the “corner P”, “tatami mating part Q”, “medium R”, and “booth medium T” of the room. , “Tatami mating part Q”, “Machu R”, “Booth middle T”, when collecting data, “Corner P”, “Tatami mating part Q”, “Machu “R” and “T” in the booth are marked with “mark” in advance, and the laser beam b emitted from the laser rangefinder by operating the distance / azimuth measuring device is directed to “mark”. The collected 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 are automatically set without marking the “corner P”, “tatami mating part Q”, “machu R”, and “booth mid T” positions. It was not possible to collect data by measuring. Therefore, the dimension measuring apparatus according to the present invention determines the positions of “corner P”, “tatami mating portion Q”, “medium R”, and “booth medium T” necessary for laying tatami mats. It was conceived to automatically measure the shape of the room expressed by connecting line segments.
[0010]
[Means for Solving the Problems]
The room dimension measuring apparatus of the present invention includes a laser distance meter mounted on a turntable, an azimuth angle detection means for detecting an azimuth angle directed by the laser beam of the laser distance meter from a rotation angle of the turntable, Distance / azimuth measuring device comprising a motor for rotating the turntable, a pattern / table storing the vertical and horizontal lengths of a standard room and the arrangement of tatami mats laid in the room, and the distance / azimuth measuring device Is installed in the room and operated, and the distance data to the sill output from the laser rangefinder is collected together with the azimuth angle data obtained by the azimuth angle detection means to measure the dimensions of the room, After searching the pattern table by dimension and arranging the tatami mats to lay in the room, obtain the position of the corner of the room, the tatami mating section, and the space between the tatami mats, and then the distance and azimuth above. Measurement When the laser beam of the laser rangefinder is directed to the corner of the room, the tatami mating section, or the middle direction, the distance data to the threshold output from the laser rangefinder is collected. And a control device for controlling the operation of measuring the dimensions of the room.
[0011]
The room dimension measuring method according to the present invention includes a laser distance meter mounted on a turntable and an azimuth angle detection for detecting an azimuth angle directed by a laser beam of the laser rangefinder from a rotation angle of the turntable with respect to a base. A distance and azimuth measuring device comprising means, a motor for rotating the turntable, and a pattern table storing the vertical and horizontal lengths of a standard room and the arrangement of tatami mats laid in the room, is installed in the room, A first step of operating the distance / azimuth measuring device and collecting the distance data output from the laser distance meter together with the azimuth data obtained by the azimuth detecting means to measure the dimensions of the room. From the second step of obtaining the layout of the tatami mats laid in the room by searching the pattern table based on the dimensions of the room obtained in the first measurement step, and the tatami mat layout obtained in the search step, of The third step of obtaining the positions of the corners of the room, the tatami mating part, and the space between them, and the distance and azimuth measuring device are reactivated, and the laser beam of the laser rangefinder is When directed in the direction obtained in the third step, the fourth step of collecting the distance data to the sill output from the laser distance meter and measuring the dimensions of the room is performed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
As shown in the perspective view of FIG. 1, the room dimension measuring apparatus 1 according to the present invention has a circular base 2 having three legs 21 and a large gear 22 fixed concentrically around the leg 21 and the base. A circular turntable 3 is rotatably mounted on the table 2.
[0013]
The turntable 3 has a rotary encoder 31 that detects the rotation angle of the turntable 3 relative to the base 2 and a small gear 39 that meshes with the large gear 22 of the base 2, and a motor 32 that rotates the turntable 3. And a laser distance meter 4, 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 data externally A connector 35 and the like to be taken out to the device are provided.
[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 that receives distance data output from the laser distance meter 4 and sends data to an external device, a control circuit 53 that controls the motor 32, and the like.
[0015]
Furthermore, a remote control receiver for operating the remote control transmitter 9 by radio waves or light rays to remotely control the dimension measuring device 1 is provided.
[0016]
“Laser distance sensor LDS-1” sold by Murakami Giken Sangyo Co., Ltd., which incorporates the module “DISTO pro ⁴ a” manufactured by Leica Geosystems, Switzerland, is used as the laser distance meter 4 mounted on the turntable 3. can do. This laser rangefinder has "distance data" that indicates the distance to the target and "reflection intensity data" that indicates the intensity of the received reflected light as output data. A mode can be selected.
[0017]
The directivity direction (corresponding to the azimuth angle) of the laser beam emitted from the laser distance meter 4 can be collected by a count value obtained by counting pulses output from the rotary encoder 31. The collected “azimuth angle data” is stored in the RAM 52 together with the “distance data”.
[0018]
The signal processing circuit has a pattern table that stores the vertical and horizontal lengths of various standard rooms such as three tatami mats, four tatami mats, six tatami mats, eight tatami mats, and ten tatami mats, and the layout of tatami mats laid in the room. I have.
[0019]
Next, using the dimension measuring apparatus 1 configured as described above, the “corner portion P”, “tatami mating portion Q”, “intermediate R”, and “booth” of the room necessary for laying the tatami mat A method for obtaining a dimension drawing of a room expressed by a line segment connecting “medium T” will be described.
[0020]
Step 1M: First, a method of manually performing the operation of acquiring the 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 measuring transmitter 9 is operated to operate the dimension measuring device 1, and the laser beam emitted from the laser distance meter by visual observation. Each time b points in a direction in which a line segment of one side can be acquired near the corner of the room, the remote control transmission device 9 is operated to collect the distance data and azimuth data at that point and store them in the RAM 52. . For example, when the room has a quadrilateral shape, distance data and azimuth angle data of two points near both ends of the four sides are collected. That is, 8 points of data are collected.
[0021]
Step 1A: A method for automatically performing the operation of acquiring the room shape will be described. As in step 1M, the dimension measuring apparatus 1 is installed in the center of the room, and the dimension measuring apparatus 1 is operated. Every time the laser beam b emitted from the laser distance meter rotates by a certain angle, or distance data is obtained. By collecting distance data and azimuth data every time a certain length changes, the shape of the room is automatically collected in polar coordinates.
[0022]
Step 2: Since the line segments of each side can be obtained from the data collected in Step 1M or 1A, the point where two line segments sandwiching each corner intersect is indirectly measured as a virtual corner. be able to. The collected corner data is stored in the RAM 52.
[0023]
Step 3: By converting the collected polar coordinate data into the two-dimensional coordinate data, the shape and size of the room can be obtained, and the two-dimensional coordinate data is stored in the pattern table. By searching the vertical and horizontal lengths of the various rooms and the layout of the tatami mats laid out in the room and extracting the most approximate pattern, the room type and the tatami mat layout measured in step 1M or 1A are automatically Can be detected.
[0024]
Step 4: The type of room and the layout of the tatami are determined by the search in Step 3, and the positions of the “tatami mating portion Q” and “intermediate R” in contact with the sill 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 parts and the position where the short side is divided into three parts are “tatami mat matching part Q” and “ It can be seen that this corresponds to the position of “R”. It can be seen that the long side is divided into 8 and the short side is divided into 6 to correspond to the position of “booth middle T” in addition to “tatami mating part Q” and “intermediate R”.
[0025]
As described above, the first measurement in steps 1 to 4 can roughly measure the shape and size of the room, and the layout of the tatami to be laid is determined. It is possible to obtain rough data of the positions of the abutting portion R, “intermediate R”, and “booth intermediate T”.
[0026]
Step 5: The second measurement is performed based on the data of the positions of “corner P”, “tatami mating portion Q”, “intermediate R”, and “booth intermediate 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 radiated from the laser rangefinder is counted based on the counted value output from the rotary encoder 31. Every time b is judged to be directed in the direction of “corner P”, “tatami mating part Q”, “machu R”, and “booth mid T”, distance data is collected together with the azimuth data. By doing so, the shape of the room expressed by the line segment connecting each position of “corner part P”, “tatami mating part Q”, “medium R” and “booth middle T” of the room in polar coordinates is automatically performed. Can be collected. The collected data is stored in the RAM 52.
[0027]
In particular, the “corner” of the room needs to be measured accurately. As proposed in Japanese Patent Application No. 2002-381828 filed earlier, as shown in FIG. 5 (a), a highly reflective linear reflector 61 and two low reflectances (black) sandwiching the linear reflector 61 The corner measurement marker 6S, which has a flat surface 63 and is bent at a right angle with the linear reflector 61 as a trough line, is installed at the “corner” to suppress reflection near the “corner” and to provide high reflection. The measurement may be made 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 portion P”, “tatami mating portion Q”, “intermediate R”, “ A room dimension diagram shown in FIG. 4 expressed by a line segment connecting “booth and middle T” can be obtained.
[0029]
As shown in the plan view of FIG. 6, when there are corner pillars and center pillars in the room, in the second measurement, the corner pillars and center pillars are ignored and “corner P” and “tatami mat butt” After measuring “Part Q”, “Machu R”, and “Booth Medium T”, the corner pillars and the middle pillar are measured in the third measurement. At this time, as shown in FIG. 5 (a), a linear reflector 61 having a high reflectance and two low-reflectance planes 63 sandwiching the linear reflector 61 are provided. Use a corner measurement marker 6S bent at a right angle as a line, or use a corner measurement marker 6K bent at a right angle as a line reflector 61 as shown in FIG. 5B. Installed in the “corner” or “corner” of the corner pillar or the middle pillar to suppress the reflection near the linear reflector 61 and to reflect only the reflected light reflected from the highly reflective linear reflector 61. What is necessary is just to comprise so that it may be used and measured.
[0030]
When the protruding length of the corner pillar or the middle 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 protruding portion of the column, and a line connecting the two points c and d on the flat plate 9 is connected. A flat plate 9 having a sticky back surface is pasted on the other surface of the protruding portion of the column, with the line segment connecting the extension line of the line segment and the two points a and b of the sill and the intersection point being the valley line A. The line segment connecting the two points e and f on the flat plate 9 is obtained, and the line segment connecting the extension line of the line and the two points g and h of the sill and the intersection point are the valley line C, and the two points c and d are defined as The intersection of the connecting line segment and the line connecting the two points e and f may be the ridgeline of the column.
[0031]
Even in the measurement of a room where there is no corner column or center column, the extension lines of the two line segments including the corners are crossed as described with reference to FIG. 3 without using the corner measurement markers. The intersecting point may be a corner.
[0032]
【The invention's effect】
As is clear from the description based on the above embodiment, according to the room dimension measuring apparatus of the present invention, the lower front side of the tatami that touches the sill is cut according to the sill (separated) and the edges are sewn. Skilled room shape expressed with line segments connecting the "corner", "tatami butt", "machu", and "booth" positions required for tatami mating when sewing Can be obtained automatically.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a room dimension measuring apparatus according to the present invention;
FIG. 2 is a block diagram of a control circuit used in the apparatus shown in FIG.
FIG. 3 is a plan view showing a state in which the dimensions of a room are roughly measured using the apparatus of the present invention;
FIG. 4 is a dimensional drawing of a room expressed by line segments connecting “corner”, “tatami mating part”, “medium”, and “booth middle” of a room necessary for laying tatami mats;
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 in which corner columns and prisms exist are measured using the apparatus of the present invention;
FIG. 7 is a perspective view illustrating a state in which a corner column or a middle column having a short protruding length is measured;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dimension measurement apparatus 2 Base 3 Turntable 4 Laser distance meter 5 Signal processing circuit 9 Remote control transmitter
31 Rotary encoder
32 motor
33 Keyboard and other controls
34 Display for displaying input / output data
35 connector
6S Corner measurement marker
6K corner measurement marker
61 Linear reflector with high reflectivity
63 Low reflectivity plane

Claims (2)

A laser rangefinder mounted on the turntable, an azimuth angle detection means for detecting the azimuth angle directed by the laser beam of the laser rangefinder from the rotation angle of the turntable, a motor for rotating the turntable, and a standard A distance / azimuth measuring device comprising a pattern table storing the length and width of a typical room and the arrangement of tatami mats laid in the room,
The distance / azimuth measuring device is installed and operated in the room, and the distance data to the sill 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. By searching the pattern table with the measured dimensions of the room and arranging the tatami mats laid in the room, the positions of the corners of the rooms, the tatami mating sections, and the intermediate positions required for the tatami mating were obtained After that, when the distance / azimuth measuring device is restarted and the laser beam of the laser rangefinder is directed to the corner of the room, the tatami mating part, or the middle direction, it is output from the laser rangefinder. And a controller for controlling the operation of collecting the distance data to the threshold and measuring the dimensions of the room. A laser rangefinder mounted on the turntable, an azimuth angle detection means for detecting the azimuth angle directed by the laser beam of the laser rangefinder from the rotation angle of the turntable, a motor for rotating the turntable, and a standard A 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 laid in the room,
A first step of operating the distance / azimuth measuring device and collecting the distance data output from the laser distance meter together with the azimuth data obtained by the azimuth detecting means to measure the dimensions of the room. When,
A second step of retrieving the pattern table according to the dimensions of the room obtained in the first measurement step to obtain the arrangement of tatami mats laid in the room;
From the arrangement of the tatami obtained in the search step, a third step of obtaining the corners of the room necessary for laying the tatami mat, the tatami mating portion, and the intermediate position,
When the distance / azimuth measuring device is operated again and the laser beam of the laser rangefinder is directed in the direction obtained in the third step, the distance data to the threshold output from the laser rangefinder is obtained. A fourth step of collecting and measuring room dimensions;
A method for measuring the dimensions of a room, characterized in that

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