JPS60108069A - Pie posture detecting method in automatic mah-jongg table - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention sequentially detects the posture and orientation of the tiles transferred after being mixed, and converts the tiles other than the face-down tiles to castle wall tiles (face-down tiles). Automatic Mahjong Tei used to correct the required number of tiles to the face down state necessary to form a two-tiered state - V or I / + Rokuei's customary plan export method - ゛On the turntable An automatic mahjong table that automates a series of operations in which tiles are mixed, all of the mixed tiles are turned face-down, and castle wall tiles are formed using the face-down tiles is already well known.

On the other hand, Japanese Patent Application No. 57-215503 filed by the present applicant
The invention in issue involves changing the orientation of all the tiles mixed on the turntable to a position other than standing tiles, and at the same time correcting the orientation.
These tiles are sent from the turntable onto the transfer conveyor, and the tiles that are being transferred in the horizontal position and the face-up horizontal position are corrected to the face-down position required for forming castle wall tiles. A posture correction device that can do this has been proposed. This posture correction device detects the posture of the transferred tiles in advance, and based on this detection, corrects the tiles other than the face-down tiles to the face-down posture, and transfers the tiles to the next action section (standby table). It is configured so that it can be sent out sequentially.

Therefore, the present invention provides a method for detecting the posture of tiles in an automatic mahjong table, which is used to accurately detect the posture of the tiles transferred to the posture correcting device and to control the operation of the posture correcting device based on this detection. The purpose of this device is to provide a magnetic flux generating section on the tiles, and transfer the tiles in a sideways or horizontally fallen position to the side of the posture correction device in a single line in a vertical line, thereby correcting the posture described above. The amount of magnetism from the magnetic flux generator is detected according to the orientation of the tile transferred at the front position of the device and converted into an electrical signal, and the orientation of the tile and the orientation of the front and back sides are detected using this electrical signal. This is achieved using a posture detection method.

Embodiments of the method of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a conveyor 4 for transporting the tiles 1'f is provided between the turntable 2, which is a member for mixing tiles, and the basket 3, which is a component of the posture correction device. A guide frame 5 is provided on the transfer conveyor 4, so that the tiles 1 sent out from the turntable 2 can be surely transferred to the basket 3 side. The rotating shaft 6 of the basket 3 is connected to a motor (not shown), and its rotation angle in forward and reverse directions is controlled by the motor. Also, the second
As shown in the figure, the basket 3 has one side for receiving the tiles 1 and two sides for sending out the tiles 1, which are open, and the side for receiving the tiles 1 is normally opposed to the sending end 4a of the conveyor 4 for transfer. It is controlled so that it can stop at a certain position, and a detection section 7a is provided to detect that position. Furthermore, the basket 3 is provided with a sensor 7b that detects when the tiles 1 are stored in the basket 3. In the figure, reference numeral 8 denotes a rotatable sensor 7b on each of the two surfaces of the basket 3 through which the tiles 1 are delivered. This door 8 is freely provided to prevent tiles from falling off, and is held by a holding spring 9.

Next, a method for detecting the attitude of the tiles 1 sent onto the above-mentioned transfer conveyor 4 (the attitude of the tiles lying sideways or horizontally and the orientation of their front and back surfaces) will be explained. As shown in the figure, a magnetic flux generating section 12 is embedded in the tile 1, and this magnetic flux generating section 12 is arranged with a permanent magnet 13 located approximately in the center of the tile 1 and a bottom surface facing the surface side of the tile 10. Magnetic shielding member 14 (iron piece) with a U-shaped cross section
It is composed of. In FIGS. 1 and 4, an attitude detection unit 11 is provided in the passage A for the tiles 1 moving on the transfer conveyor 4, and is located at an angle of 7.3 degrees from the 4th floor. This posture detecting section 11 is a fourth
As shown in the figure, the first magnetic sensor is located at the upper part of one side of the guide frame 5. -11a, a second magnetic sensor 11b located on the right side of the top surface, and a third magnetic sensor 1 located on the lower side of the other side.
1C. These magnetic sensors use magnetoresistive elements or Hall elements among magneto-electric conversion elements, and switch elements that turn on and off depending on the signal levels of these elements. The posture and front and back orientation of the tile 1 are all detected by a combination of electric signals corresponding to the strength of the magnetic field from the first magnetic sensor 11a, the second magnetic sensor 111), and the third magnetic sensor l]C. .

That is, depending on the electric signal conditions of the first magnetic sensor 11a, the second magnetic sensor 11t+, and the third magnetic sensor 11C, the tile may fall sideways or fall horizontally and become -6-++S+1 and Mt.A5+F>Si? - The tile 1 stored in the basket 3 can be corrected to the normal face-down position by inputting the ``Ha'' to the computer and giving the above-mentioned basket 3 the required rotation according to instructions from the computer. become. For example, the first magnetic sensor 11a
A logical condition is created by the combination of the electric signal of This discrimination information is stored in a computer, and a necessary rotation command is given to the basket 3 so that the tiles stored in the basket 3 take the correct posture of face down tiles according to each discrimination information.

Regarding the detection of the posture of the tiles described above, an example of detection of each tile will be specifically explained.

As shown in FIG. 5, the magnetic flux 15 generated from the permanent magnet 13 of the magnetic flux generating section 12 of the tile 1 passes through the back surface of the tile 1 and is absorbed by the magnetic shielding member 14. Therefore, the magnetic flux density is highest on the back surface of the tile 1 and its vicinity, and the second highest on both side surfaces of the tile 10, and the front surface is shielded by the magnetic shielding member 14 and has an extremely low magnetic density.

For example, if the transferred tile 1 is tilted horizontally to the left as shown in FIG. and 110 are off. Based on these on/off signals, the computer moves the basket 3 clockwise, for example, by 90 degrees.
Issue a command to rotate.

In the case of tilting horizontally to the right in the figure (·), the first magnetic sensor lea is off, the second magnetic sensor 11b is on, and the third magnetic sensor 110 is also on, and these on/off signals Based on this, the computer issues a command to rotate the basket 3 90 times counterclockwise. Same figure (c)
In the case of a normal face down tile shown in , the first magnetic sensor 11
a is on, the second magnetic sensor llb is also on, and the third magnetic sensor 11c is off. Therefore, in the case of this electrical condition signal, the computer remembers that the tile 1 is in a normal posture 9 and does not issue any rotation command. In addition, in the case of a tile lying face up horizontally as shown in Figure 4), the first magnetic sensor 1], a is off, and the second magnetic sensor ? -11b is off, third magnetic sensor 11Cf
It's d on, the computer puts basket 3 at 1800.
Issue a command to rotate.

By combining the data detected as above, that is, the on/off signals of the first, second, and third magnetic sensors,
It is possible to reliably detect the posture of each tile being transferred and the orientation of the front and back sides, and to correct the posture of all tiles other than the normal face-down tiles to the normal face-down tile posture. Note that a microswitch (with an actuator) or a transmission type optical sensor can be used as a means for determining whether a tile is lying on its side or lying horizontally.

The present invention is as described above, and if the present detection method is adopted in an automatic mahjong table, it will be an advantageous system for quickly correcting the individual tiles transferred after being mixed into a normal face-down tile posture. This has the effect of further improving the original functions of the automatic mahjong table.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the device implementing the method of the present invention, Fig. 2 is a perspective view of the basket section, Fig. 3 is a front sectional view of the tile, and Fig. 4 is a front sectional view of the posture detection section. Figures (A) to (B) are explanatory diagrams of the detection state. In the figure, 1 is a tile, 3 is a basket which is a component of the posture correction device, 4 is a transfer conveyor, 11a is a first magnetic sensor, 11b is a second magnetic sensor, ■IC is a third magnetic sensor, 12 is a magnetic flux generating section, 13 is a permanent magnet, 1
4 is a magnetic shield member. 5th (r) (c) (b) Jin O 2

Claims (1)

[Claims] The tiles are provided with a magnetic flux generating part that shields the magnetic flux that should pass through a predetermined surface side of the tiles, and the tiles in the horizontal and horizontal positions are transferred in a line vertically to the side of the tile posture correction device. , an automatic apparatus characterized in that the strength of the magnetic flux generated from the tiles transferred at a position in front of the posture correction device is converted into an electric signal, and the posture of the tiles and the state of the front and back orientation are detected by this electric signal. How to detect the posture of tiles at a mahjong table