JP2844145B2 - Room dimension measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tatami size measuring device which is mainly used to determine the size of a tatami mat to fit a room when a new tatami mat is laid or laid.
In particular, it is configured to be easy to handle and convenient to carry.

[0002]

2. Description of the Related Art When a tatami mat is laid in a room, the indicated area of the room is not always the same as the actual area. The tatami was cut to fit the shape of the room.

[0003] Since the actual dimensions of a room are measured manually by means of a ruler, it requires experience and skill and requires a lot of time and labor. Even if the length can be measured accurately, It was difficult to accurately measure the angle of the corner.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention
Anyone can accurately determine the dimensions of the tatami mat in a short time without any experience or skill, and it is convenient to carry
This was conceived in order to solve the problem of obtaining a dimension determining means.

[0005]

[Means for Solving the Problems] Measurement of dimensions of a room according to the present invention
The fixing device has a base 2 on which the first gear is fixed, and
Rotation with respect to the turntable 1 and the base 2 that are mounted rotatably
A second gear meshing with the first gear for detecting the rotation angle of the base 1;
A rotary encoder 11 having gears,
Linear encoder 13 for detecting the length of tape 14
And the tip of the tape 14 was adjusted to the reference point to be measured.
Storage means for storing angle data and length data at the time
34, the rotary encoder 11,
The linear encoder 13 and the storage means 34 are connected to the turntable 2
Are placed together.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) As shown in FIG. 1, a tatami size measuring apparatus according to the present invention comprises a circular base 2 having three legs 21 and a base 2 having a circular shape.
And a circular turntable 1 rotatably mounted via bearings 22 on a circular base 2.
3 is fixed, and the turntable 1 includes an incremental type rotary encoder 11 for detecting a rotation angle,
An incremental linear encoder 13 for detecting the length, a storage battery 19 for operating the entire apparatus, a circuit board 30 incorporating a signal processing circuit, and an optical signal receiving element 1
6 etc. are attached.

The rotary encoder 11 has a small gear 12 which meshes with a gear 23 of the base 2. When the turntable 1 is rotated, the rotary encoder 11 is rotated at an increased speed, and only when the turntable is rotated, its rotation angle is increased. Generates a two-phase pulse in a number proportional to.

The linear encoder 13 winds the tape 14 with a spring. When the tape 14 is pulled out or retracted, the number of two-phase tapes proportional to the amount of movement of the tape 14 only while the tape 14 is moving. Generate a pulse.

As shown in FIG. 2, the signal processing circuit includes a CPU 31 for controlling the entire apparatus and a rotary encoder 1.
The first up counting of two-phase pulses generated from 1
A down counter 36, a second up / down counter 37 for counting two-phase pulses generated from the linear encoder 13, and a count value of these two counters 36 and 37 and an output of the optical signal light receiving element 16. PIO 32 input to CPU 31 and RO storing processing program
M33, a RAM 34 for temporarily storing data, an SIO 35 for exchanging data with an external device 4, and the like.

[0010] In addition, a remote control device (not shown) for generating signals such as "initial setting", "measurement", "cancel", and "complete" and inputting them to the optical signal receiving element 16 by light beams is attached. doing.

Next, a procedure for determining the size of the tatami mat by the apparatus of the embodiment having the above-mentioned configuration will be described with reference to a flowchart of FIG.

First, as shown in FIG. 4, a size indexing device A is installed substantially at the center of a room.

(Step 1) By operating the remote controller,
By transmitting a signal of “initial setting” to the optical signal light receiving element 16,
The count values of the two up / down counters 36 and 37 are initialized to zero.

(Step 2) The tape 14 is pulled out from the linear encoder 13 and its tip 18 is placed in a tatami room.
Up to the number of two-phase pulses generated by the rotary encoder 11 and proportional to the relative rotation angle between the turntable 1 and the base 2 until they are adjusted to the corners or the reference points. And the number 2 which is proportional to the amount of movement of the tape 14 generated by the linear encoder 13.
The phase pulses are counted by the up / down counter 37. When the tip 18 of the tape 14 is accurately aligned with the corner of the tatami mat or the reference point in the room, operate the remote control device to “measure”
Is transmitted to the optical signal light receiving element 16.

(Step 3) When the "measurement" signal is received by the optical signal light receiving element 16 and transmitted to the CPU 31,
(Step 4) Each data of the count values of the two counters 36 and 37 at that time is read.

(Step 5) The operations of Steps 2 and 3 are
Perform for all corners or reference points of the room tatami . At this time, if the signal of “measurement” is erroneously transmitted, the signal of “cancel” is operated by operating the remote control device.
6 and is received by the optical signal light receiving element 16 (step 6), the immediately preceding data is deleted.

(Step 7) When the data collection at the corners of the tatami mats or the reference points in all the rooms is completed, the remote controller is operated to transmit a signal of "completion" to the optical signal light receiving element 16.

(Step 8) When the signal of "completion" is received by the optical signal light receiving element 16, a serial number is added to the beginning or end of the determined series of data and stored in the RAM 34.

The operations from step 1 to step 8 are executed on the tatami mats of each room to be dimensioned , and the tatami mat data of each room is collected in the RAM 34.

Then, this size indexing device A is
The external device 4 is connected to an external device 4 such as a personal computer via 35 to read out each data stored in the RAM 34 for each room tatami mat , and the external device 4 performs a coordinate conversion process.

[0021] The data stored in the RAM34, the dimensions
This is polar coordinate data centered on the place where the normal indexing device A is installed. As shown in FIG. 4, the size of each side L1 to Ln and the included angles θ2 to θn (where n
Is the number of measurement points), the length of the opposite side Si (where i is
= An integer of 2 or more) _{^{is, Si = {L 1 2 +}} Li 2 -2L 1 · Li-cosθi} can be obtained by ^1/2, _also, L 1, Li and Si
Unknown included angle .phi.i between L1 and Si in triangle made by _{^{the, cosφi = (L 1 2 +}} Si 2 -Li 2) / from _{(2L 1 · Si), φi} = cos -1 {(L 1 2 + Si ^2- Li ² ) / (2L ₁ .Si)｝. In this way, the tatami mat in the room
It is possible to indexing the actual shape of.

Further, in case of expressing by converting the XY coordinate system, if example embodiment, taken the upper side of both ends of the tatami room _{(L 1,} θ ₁ and _{L 3, θ 3)} a straight line connecting the X-axis, which When a straight line passing through (L ₁ , θ ₁ ) perpendicular to the axis is taken on the Y axis, each point (L
i, θi) can be obtained as xi = L ₁ cosφ ₃ −Licos (θi + φ ₃ ) yi = L ₁ sinφ ₃ −Lisin (θi + φ ₃ ) as a point (xi, yi).

(Second Embodiment) In the first embodiment, the collected tatami data of each room is stored in the RAM 34 and output to the external device 4 such as a personal computer via the SIO 35. As shown in FIG. 5, instead of the RAM 34 and the SIO 35, a socket 39 is connected to a bus drawn from the CPU 31 and an IC having a built-in memory IC in the socket 39.
The card 38 is mounted, and the collected tatami data of each room is stored in the IC card 38.

When the data of the tatami mats in all the rooms have been collected, the IC card 38 is removed from the socket 39, and
By connecting to a personal computer or the like, the collected data can be transferred and processed.

In each of the above embodiments, the encoder 1
Although incremental encoders are used as 1 and 13, if the accuracy of dimension determination does not matter, an absolute encoder can be used. In that case, two counters 36 and 37 need to be provided. Instead, the encoders 11 and 13 may be directly connected to the PIO 32.

[0026]

As is clear from the based on the above embodiments description, according to the present invention, the dimensions indexing device tatami the invention, carry is easy, experience and skill without requiring anyone briefly tatami size Can be accurately determined .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a tatami size measuring device according to the present invention;

FIG. 2 is a block diagram showing a circuit of the apparatus shown in FIG. 1;

FIG. 3 is a flow chart showing the operation of the apparatus of the present invention;

FIG. 4 is a plan view showing a situation in which the dimensions of a tatami are determined by the apparatus of the present invention;

FIG. 5 is a block diagram showing a circuit of another embodiment of the device of the present invention.

[Explanation of symbols]

 Reference Signs List 1 turntable 2 base 11 rotary encoder 13 linear encoder 16 optical signal receiving element 31 CPU 32 PIO 33 ROM 34 RAM (storage means) 36, 37 up / down counter 38 IC card 39 socket

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-62-277511 (JP, A) JP-T-61-501591 (JP, A)

Claims (2)

(57) [Claims] 1. A base on which a first gear is fixed, and a turntable mounted on the base.
A turntable movably mounted on the base and the turntable with respect to the base.
A second gear meshing with the first gear for detecting the rotation angle of the turntable;
A rotary encoder with gears and
Linear encoder to detect the length of the loop
Angle when the tip of the tape is aligned with the reference point
Data and storage means for storing length data,
The above rotary encoder, linear encoder and
A room size measuring device, wherein the storage means and the storage means are collectively mounted on the turntable . 2. A base on which a first gear is fixed, and a turntable mounted on the base.
A turntable movably mounted on the base and the turntable with respect to the base.
The first pulse generating a number of pulses proportional to the rotation angle of the turntable
Rotary encoder having a second gear meshing with a gear
And the pulses output from the rotary encoder
The first counter to count and the length of the extracted tape
A linear encoder that generates the illustrated number of pulses, and
Number of pulses counted from linear encoder
2 counter and the tip of the tape at the reference point to be measured
Of the first and second counters when
Storage means for storing the angle data and the length data;
The rotary encoder, the linear
Encoder, the first and second counters, and the
A room size measuring device, which is collectively mounted on the rotary table .