JPS62277510A - Indexing device for straw mat - Google Patents

Abstract

PURPOSE:To automatically index the size of a straw mat by measuring an optional point position on each side part of a room. CONSTITUTION:A measurement part 8 consists of a base 8 and an arm 10 fitted to the base 8 horizontally rotatably by a shaft part 9a, the arm 10 have three arm members 10a-10c coupled successively by shaft parts 9b and 9c horizontally rotatable, and a probe 11 which contacts points of respective side parts 4a, 4b... to be measured is provided atop of the outermost arm 10c. Then, an arithmetic part divides the room by reference lines which are a straight line parallel to a straight line passing two points P1 and P2 of a specific side part of the room R measured by a measurement part 6 and a straight line crossing said straight line, and also computes the sizes of respective mats on the basis of the positions of points measured by the measurement part 6. Consequently, the sizes of mats are automatically indexed.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention is a tatami size determining device for determining the size of each tatami mat to fit the room when making a new tatami mat. It is related to.

(Prior art and its problems) When making new tatami mats, it is necessary to determine the dimensions of each tatami mat to fit the room. In the past, tatami craftsmen measured the dimensions of the room with a ruler, and based on this, determined the dimensions of each tatami using their own ruler. Recently, as shown in Fig. 9, warp threads 1 and weft threads 2 are strung approximately at the center of the base R so as to be perpendicular to each other.
Point C1 on each side 3a, 3b... with reference to
The position of C2... is measured with a ruler, and based on this, the dimensions of each tatami are determined by drawing. In this way, in the past, the dimensions of each tatami were determined manually based on the all fixed values after measuring arbitrary points on each side of the room. Furthermore, it took a lot of effort and time to perform the indexing.

(Means for Solving the Problem) In order to solve the above-mentioned problem, the present invention includes a measuring means for measuring the position of an arbitrary point on each side of the room, and each point measured by the measuring means To provide a device that automatically calculates the size of a tatami mat based on the position of a point. The technical means for this purpose include a measuring means 6 that measures the position of an arbitrary point on each side of the room R;
Two points Pi on a specific side of the room R measured by
, Using a straight line parallel to the straight line passing through P2 and a straight line orthogonal to this as reference lines, divide the room into tatami mats according to the reference lines, and calculate the dimensions of each tatami based on the position of the point measured by the measuring means 6. It has a calculation means 7 for performing calculations and an output means 24 for outputting the calculation results.

(Example) Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, the indexing device 5 is located at each side 4a of the room R.
It consists of a measuring section 6 that measures arbitrary points of +4b+4c+4d, and an arithmetic section 7 that divides the tatami of the room and calculates the dimensions based on the position of each point measured by the measuring section 6.

Referring also to FIGS. 2 and 3, the measurement unit 6 includes a base 8 and an arm 10 that is horizontally rotatably attached to the base 8 by a shaft 9a. , three arm members 10a, 10b.

10c are sequentially connected horizontally rotatably to each other by shaft portions 9b, 9c, and a probe 11 is provided at the tip of the outermost arm member 10c to contact the measurement point on the side portions 4a, 4b, . . . There is. Each shaft portion 9a, 9b, 9c
A set of rotary encoders 14, 15, and 16 detect the rotation angle of each arm member 10a, 10b, and 10c.
is installed. Note that the stopper 12 in FIG.
This is to prevent the arm member 10a from making more than one rotation, and to check the origin position of each arm member 10a, 10b, 10c. The state in which the arm member 10a abuts this stopper 12 and the other arm members IQb and IOC are bent the most is defined as the origin position, and in this state, the respective arm members 10a and 10b.

Origin detector 17a1 for detecting 10c and outputting a signal
17b and 17C are provided. When the measurement switch 18 is pressed while the probe 11 is in contact with a target, the output of each encoder 14, 15, and 16 is taken in at that time.

In particular, in FIG. 3, the input/output interface 7 of the arithmetic unit 7, a CPU 20, a memory 21, 22, a liquid crystal display 23, a printer 24, a buzzer 25, and a keyboard 26 consisting of a large number of input switches are shown. It is shown. Regarding these, while referring to FIGS. 4A and B,
Explain along with the action.

First, the number of tatami mats (tatami mats) is input from the keyboard 26 according to the size of the room R. CPU20 is Memo IJ
The tatami mat pattern corresponding to the input tatami mat is selected from among the tatami mat patterns stored in 22 and displayed on the display section 23. Figures 5a to 5e show examples of tatami mat patterns, with room R1 having a 3 tatami floor in Figure 5a and 4.
Rooms R2 and R3 are 5 tatami mats, and room R4 is 6 tatami mats in Figure 5d.
, Figure 5e shows a room R5 with a tatami floor. If there are two or more types of tatami mat patterns for the same tatami mat, such as in the case of 4 or 5 tatami mats, one of them is selected using the keyboard 26. In order to match the state of the room R shown in the determined tatami mat pattern with the state of the tatami to be produced, side part B that serves as a reference shown in the pattern and side part 4a that serves as a reference of the actual room are used. match. To this end, the base 8 of the measurement unit 6 is placed approximately in the center of the room R and toward the specific side 4a that is to be used as a reference. At this time, for example, the upper side 8a of the base 8 may be opposed to the side 4a in parallel, or the arrow 8b marked on the base 8 may be aligned with the side 4a.
If the display section 23 is provided integrally with the base 8, the pattern displayed on the display section 23 and the actual layout of the room R should match. Just do it.

Next, the direction in which the side portion 4a is located (north, south, east, and west) is input using the keyboard 26.

The measurement will start from now on, but first we will start with arm 1.
In order to set the origin position of 0, each arm member 10a,
10b and 10c are bent toward the stopper 12 mentioned above, and each origin is detected! 517a, 17b, and 17c. Origin detector 17a.

When all the encoders 17b and 17c are turned on, the CPU 20 resets the current count values from the respective encoders 14, 15, and 16 to zero or sets them to a specific value to perform zero-order reference point measurement. This is two points PI in the side 4a,
First, move the arm 10 horizontally to the floor of the room R, press the tip of the probe 11 with the point P1, and press the total θII switch l8 to measure each point at that time. Encoder 14°15.16
The coordinates are calculated based on the count value from , and the X coordinate,
The y coordinate is stored in memory 21. The same applies to point P2. Calculations for determining the coordinates of each of these points are performed using the count values of the encoders 14, 15, and 16 for each arm member 10.
Y axis or arm member IQa, 1 of a, lob, 10c
Angle θ1 with respect to 0b. θ2°θ3 are determined, and these and each arm member 10a, 10b.

It is calculated by the following equation from the length 1t of 10C and 12+x3 (see FIG. 6).

x=11cos θ1+12cos (θ1 +02
)+f3cos(θ1 +02+03)=lly'''
11 sin θ1+j! 2sin (θ1 +02)
+13sin(θ1 +02+03)...(2) Point P1 is used to check whether the base 8 has shifted when the measurements of all sides 4a, 4b, 4c, and 4d are completed. These reference points PI and P2 serve as a reference for the direction of the tatami as described later, so if there are irregularities such as pillars on the side 4a, Avoid uneven areas.

Next, perform steady measurements. The steady-state measurement is performed by measuring arbitrary points of the entire circumference of the room R, that is, the sides 4a, 4b, 4c, and 4d in this order. At this time, be sure to perform a total of 1II on uneven or slanted parts such as the corners of the room R, corners, and notches in pillars. At the end of the steady measurement, the CPU 20 measures the reference point P1 again.
It is determined whether the error between the two measured values in step 1 is within a certain range, and if it is within the certain range, the CPU 20 displays this on the display unit 23 and starts calculation, and if it is outside the range. The buzzer 25 sounds with a display to that effect. In the latter case, measure again.

First, CPU 20 is a new X that corresponds to the actual room R.
Set the Y coordinate system. The XY coordinates are the above-mentioned total ljl+
The origin of the xy coordinates unique to part 1 6 is the origin, and the reference point Pi
, P2 is a coordinate system in which the Y axis is a straight line parallel to the straight line passing through P2. Therefore, the reference point PL in xy coordinates, P
From the coordinates of 2, the angle α between the xy coordinate system and the XY coordinate system
For each linear point for which the
A transformation to a coordinate system is performed.

Next, calculate the coordinates of each point in the xy coordinate system to the center point Q of the room R.
Convert to coordinates in a new XY coordinate system parallel to the XY coordinate system with the origin as the origin. The deviation of the first xy coordinate of the center point Q from the origin is calculated from the maximum value Xmaχ and minimum value Xmrn of the X value and the maximum value Ymax and minimum value Ymin of the Y value at the first XY coordinate of each measured point. It is determined by the formula.

Hereinafter, the term "XY coordinates" refers to these new XY coordinates.

Xmax + Xm1n XQ=□ (3) Ymax + Ymin YQ=□ (4) Next, set the tatami division reference line. This varies depending on the number of cases, but here we will explain the case of g tatami as shown in FIG. As shown in FIG. 7, the reference line skin of J tree, M2.
)'13 is set. The line Ml is equal to the Y axis, and the line M
2. )'13 is parallel to the Y axis and LY/4 from the Y axis
These are straight lines that are located far apart from each other. Here, L
X and LY are defined by the following formula.

LX=Xmax-Xmin...151
LY=Y+*ax +Ymin...16
1 This reference line is made to be one of the sides of the given condition,
The dimensions of the given condition are determined. It becomes a perfect rectangle as shown in Figure 8, and other tatami mats Tl, T2. T3゜T6.
T7. T8 is the reference line M1. which is one of those sides. M2. The dimensions are determined as the distance of each point from M3. In this case, the dimensions of the corners of the tatami mat must be determined, but points 5l-56 are rarely measured directly. Therefore, each of these points S1
The position (dimensions) of ~S6 is the 2 closest to each point 31~S6.
Obtained from two measurement points using the linear interpolation method.

The dimensions of the given condition obtained above are printed out by the printer 24. For each tatami mat, the length of each side and the dimensions showing the unevenness from the opposite side are printed numerically. At this time,
The person who ordered the tatami, the identification of room R, the tatami mat pattern, etc. are also printed at the same time. Further, instead of the printer 24, the information is recorded on an IC card, magnetic tape, or magnetic disk by a writing machine (not shown) connected to the interface 19, if necessary.

According to the above-described embodiment, by using the indexing device 5, the shape and dimensions of the room can be measured by simply touching the probe 11 with each point on the side of the room R and pressing the measurement switch 1. Therefore, time and labor are greatly reduced, and even non-experts can easily and accurately determine the size of the tatami.

The measurement unit 6 includes three horizontally rotatable arm members 10a.

Since the arm IO consisting of tob and toe is used,
It is easy to measure, can be applied to rooms as small as 3 tatami mats to large rooms as large as E tatami mats, and is easy to transport by folding the arm member.It is a standard for 1 tatami division. 1 on the line. ? Since the 12° question is chosen so that it is parallel or perpendicular to the straight line passing through two specific points on the specific side 4a, the given condition is close to a rectangle and has a shape with little distortion, which makes it easier to manufacture tatami mats. It's easy and looks good when laid on tatami.

In the above-described embodiment, by setting the length of the arm member 10a to about half of the length of the other arm members 10b and 10c, it becomes easier to measure in a narrow room.The number of arm members is 2. In order to improve the resolution of the encoders 14, 15, 16, the rotation speed of each shaft portion 9a, 9b, 9c may be increased and transmitted to the encoder. Alternatively, a potentiometer may be used.The measurement switch 18 may be attached to the tip of the probe 11, and input may be made by bringing the probe 11 into contact with a measurement point.If rubber feet or the like are attached to the base 8, It is more difficult to move and becomes stable.The control unit 7 may be provided integrally with the base 8. Also, if the control unit 7 is provided integrally with the arm member 10a, there is no restriction due to electric wires and the control unit 7 can be integrated with the base 8. The arm IO can rotate freely.At the time of measurement, the X7 coordinates of each measurement point were stored in the memory 21, but the count values from the encoders 14, 15, and 16 were stored in the memory 21.
It is also possible to store the coordinates in the XY coordinate system and calculate them later. In that case, the coordinates can be directly converted to the coordinates of the XY coordinate system without converting to the coordinates in the xy coordinate system specific to the measurement unit 6. Also, when you first measure the reference points PI and P2, set the XY coordinate system based on them.
At the same time as each point is measured, it may be converted into coordinates in this XY coordinate system and stored in the memory 21. In any case, the measurement unit 6
When the base 8 of Vessels 17a, 17b.

17e is also omitted, a switch for inputting the origin is provided in its place, and the arm member 10a is placed in a position approximately corresponding to the position of the 7th pawl 12, and the other arm members jo
b. With the IOC in its most bent state, press the switch for inputting the origin to set it as the origin. By omitting the stopper 7, the arm 10 can rotate freely, so the arrangement of the base 8 can be made that much more freely. .

(Effects of the Invention) According to the present invention, the tatami size of the room can be determined by easily measuring arbitrary points on each side of the room, and even non-experts can easily and accurately determine the tatami size of the room. Since the tatami is divided by a straight line parallel to the straight line passing through two points on the specific side of the 0th room that can be opened, the given condition becomes a shape that is close to a rectangle and has little distortion.
Tatami mats are easy to manufacture and look good when laid.

[Brief explanation of the drawing]

1 to 7 show embodiments of the present invention, FIG. 1 is a plan view when the indexing device is placed in room R, FIG. 2 is a cross-sectional side view of the measuring section, and FIG. Figure 4A is a flowchart of the indexing device, Figure 4B is a flowchart of calculations, Figures 5a to 5e are diagrams representing tatami mat patterns, and Figure 6 is the xy coordinates of measurement points. Figure 7 is a diagram to explain the tatami division of room R, Figure 8 is a diagram to explain how to measure given conditions, and Figure 9 is a diagram to explain the conventional measurement method. A certain R...room, PL, P
2...Reference point? 11. Gate 21M3... line, T1~
T8... Tatami, 4a... Specific side, 5... Dividing device (tatami size indexing device), 6... Measuring section (Measurement 7...
Arithmetic unit (arithmetic means), 24... printer (output stage).

Claims (1)

[Claims] a measuring means for measuring the position of an arbitrary point on each side of the room;
Using a straight line parallel to the straight line passing through two points on a specific side of the room measured by the measuring means and a straight line orthogonal to this as a reference line, the room is divided into tatami mats according to the reference line, and the measuring means A tatami size determining device comprising a calculation means for calculating the size of each tatami based on the position of a measured point, and an output means for outputting the calculation result.