CN202599806U - Tile face automatic detecting device of common mahjong tiles - Google Patents

Abstract

The utility model relates to an automatic detection device for the face of ordinary mahjong tiles, which is characterized in that it comprises a color detector, a single-chip microcomputer, and human-computer interaction equipment; the color detector includes a light source and a color sensor, and the human-computer interaction equipment includes buttons and indicator lights The single-chip microcomputer is connected with the color sensor, buttons and indicator lights; the color detector is installed in the outer wall of the card losing channel; the single-chip microcomputer judges the card surface according to the relative strength of the red, green and blue primary colors output by the color sensor. Compared with the prior art, the utility model has the advantages that: the detection result of the card surface is accurate; no dust-proof mechanism is required, and the influence of temperature and other factors on the detection can be eliminated; the mahjong machine can use ordinary mahjong tiles, reducing the production of the mahjong machine cost.

Description

An automatic detection device for ordinary mahjong tiles

technical field

The utility model relates to a mahjong machine, in particular to the face detection of mahjong tiles in the mahjong machine. the

Background technique

Mahjong machine is a leisure and entertainment tool commonly used by people. In the mahjong machines currently on the market, the mahjong tiles used are all special mahjong tiles, and permanent magnets or iron sheets are placed in the tiles. The manufacturing process is complicated and the cost is high. Because there is no uniform standard for the placement of magnets in the tiles, "cheating mahjong machines" appear in the society. Both manufacturers and users hope that ordinary mahjong tiles (without magnets or iron pieces inside) can be used in mahjong machines, but so far there is no such Mahjong machine products. the

There is a problem when using ordinary mahjong tiles on the mahjong machine: when sorting (shuffling) the tiles, it is necessary to detect the tile faces of the mahjong tiles moving in the losing tile path, detect a type of tiles that "do not match the tile faces", knock them over, and make them Put it face down according to the front side (lettering side). the

On August 17, 2005, Chinese patent CN2718677 disclosed "a photoelectric identification device for identifying the front and back of mahjong tiles", which is characterized in that: a photoelectric probe is used, a dust-proof mechanism is installed, and the voltage output by the reflective photoelectric sensor is consistent with the device. Compare and identify the constant voltage. Its disadvantages are: ①One mahjong machine is equipped with two decks of cards with different colors, and the comparison voltage set for one deck may not be suitable for the other deck; in addition, the cards move on the conveyor belt with the conveyor belt , the distance from the sensor to each card surface cannot be absolutely the same, and the output voltage of the sensor may be different for the same card surface. ②The dust-proof glass will still be contaminated with dust, and the influence of dust on the detection cannot be eliminated. the

On December 7, 2011, Chinese patent CN102266666 disclosed "a mahjong machine", which is characterized in that: the sensor is an imaging device, and the back and front of the tiles are recognized according to the built-in algorithm. Its disadvantage is that the production cost is high. the

Utility model content

The purpose of the utility model is to solve the problems existing in the background technology, and to provide an automatic detection device and detection method for ordinary mahjong tiles, which are used in mahjong machines. the

The utility model is realized in the following way: an automatic detection device for the surface of an ordinary mahjong tile, characterized in that: it includes a color detector and a single-chip microcomputer composed of a light source and a color sensor; the color sensor is connected with the single-chip microcomputer; the color detector is installed on the output On the side wall or upper wall of the card path, when the mahjong tiles move to the color detector with the conveyor belt, the light emitted by the light source shines on the tiles, part of the light is absorbed by the tile surface, and the other part of the light carries the color information of the tile surface and is reflected to the color sensor , the single-chip microcomputer judges the face orientation of the card according to the relative intensity of the three primary colors of red, green and blue output by the color sensor. the

It is characterized in that it also includes a human-computer interaction device composed of buttons and indicator lights, which are connected with a single-chip microcomputer and used for human-computer interaction when the color of the card surface needs to be stored. The pre-stored card face color and detection program are solidified in the single-chip microcomputer. the

The detection of the card face automatic detection device of described common mahjong tiles may further comprise the steps:

(1) Before the mahjong machine leaves the factory (or when the cards are changed), the card face color information (relative intensity of the three primary colors of red, green and blue) of the second deck of cards is collected in advance through the single-chip microcomputer, and stored in the single-chip microcomputer. the

(2) When mahjong is working, the single-chip microcomputer analyzes and compares the collected card face color information with the color information pre-stored in the single-chip microcomputer to judge the card face orientation. the

Compared with the prior art, the utility model has the advantages that: the detection result of the face of the tiles is accurate; no dustproof mechanism is required; production cost. the

Description of drawings

Fig. 1 is a schematic diagram of the principle of the utility model;

Fig. 2 is the structural representation of color detector of the present utility model;

Fig. 3 (a) is the installation front view (section) of the side wall of the color detector of the utility model for losing cards;

Fig. 3 (b) is the front view (sectional view) of the installation on the upper wall of the color detector of the utility model on the way of losing cards;

Fig. 4 is a schematic circuit diagram of the utility model. the

In Figures 1 to 3: 1. Color detector; 11. Light source; 12. Color sensor; 2. Single-chip microcomputer; 3. Human-computer interaction equipment; 4. Mahjong tiles; Carousel belt. the

Detailed ways

Below with reference to accompanying drawing, the utility model is described in further detail. the

An automatic detection device for the surface of ordinary mahjong tiles, as shown in FIG. the

The structural diagram of the color detector 1 is shown in FIG. 2 , which is composed of a light source 11 and a color sensor 12 , and the distance between the centers of the light source 11 and the color sensor 12 is 3.8 mm. the

The color detector is installed in the outer wall of the card feeding channel. Figure 3(a) is a schematic diagram of the installation of the color detector when pre-stored and detecting the color of the front (lettered face) of the mahjong tiles: the light source 11 is facing the upper edge (or lower edge) of the mahjong tiles where there is no word. If the reverse side of the mahjong tiles is pre-stored and detected, the installation position of the color detector can face the mahjong tiles. Fig. 3(b) is a schematic diagram of the color detector installed on the upper wall of the playing path, and the position of the light source 11 and the color sensor 12 should be directly above the veneer layer of the mahjong tiles. the

The light source 11 can be a white LED with a diameter of 3 mm and a light emitting angle of 15 degrees. In the accompanying drawing 4, D1 is the light source 11, R1 is the current limiting resistor with a resistance value of 510Ω. the

Color sensor 12, optional device integrated with photodiode, red, green and blue light filters, model: OPB780, S7505, TCS31xx, TCS32xx, TCS34xx, etc. the

In accompanying drawing 4, U1 is color sensor 12, and model is TCS3404, and it is integrated with 4 groups of 16 photodiodes inside, wherein 3 groups have red, green, blue filter respectively, and 1 group has no filter, the light The light intensity and total light intensity of the three primary colors of red, green and blue are converted into digital quantities. Accompanying drawing 4 has provided the concrete circuit that is connected with single-chip microcomputer 2. the

The single-chip microcomputer 2 can be an 8-bit or 32-bit single-chip microcomputer integrated with FlashROM and EEPROM. the

In accompanying drawing 4, U2 is single-chip microcomputer 2, model is STC15F104E, and this single-chip microcomputer has 8 pins, and the FlashROM of 4KB, the EEPROM of 1KB and clock, reset circuit are integrated inside. the

In the attached drawing 4, K1 is a key in the human-computer interaction device, D2 is an indicator light in the human-computer interaction device, R2 is a current limiting resistor with a resistance value of 470Ω. the

In the accompanying drawing 4, C1 is a filter capacitor with a capacity of 100nF. the

The detection method of the card face automatic detection device of described common mahjong tiles is as follows:

(1) Store the face color information of the two decks of cards in the EEPROM on-chip of the single-chip microcomputer in advance. the

(2) When the mahjong machine is working, the single-chip microcomputer will analyze and compare the color information of the card surface detected in real time with the color information pre-stored in the EEPROM on-chip of the single-chip computer, and judge the direction of the card surface. the

Claims (4)

1. a kind of board face automatic detection device of common mahjong tiles is characterized in that: comprise the color detector (1) that is made up of light source (11) and color sensor (12), single-chip microcomputer (2); Color sensor (12) and The single-chip microcomputer (2) is connected; the color detector (1) is installed in the side wall or the upper wall of the card losing channel. 2. the face automatic detection device of a kind of common mahjong tile according to claim 1, is characterized in that: also comprise the human-computer interaction equipment (3) that is made up of button (K1) and indicator lamp (D2), button ( K1) and indicator light (D2) are connected with single-chip microcomputer (2). 3. the face automatic detection device of a kind of common mahjong tiles according to claim 1, is characterized in that: described color sensor (12) is integrated with photodiode, red, green, blue color filter inside device. 4. the face automatic detection device of a kind of common mahjong tile according to claim 1, is characterized in that: described single-chip microcomputer (2) is the 8 or 32 single-chip microcomputers that are internally integrated with FlashROM, EEPROM. the

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