Electronic referee for the game Who is faster. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Electronic referee for the game Who is faster? Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Beginner radio amateur

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Under this heading, Radio No. 1 for 1994 published an article by A. Moskvin from Yekaterinburg. It told about the replacement of a "live" judge participating in refereeing, with an automatic machine that performs the same functions. For many years, the author has exploited this game, accumulated considerable experience and came to the conclusion about a possible modernization of the design. Now you can play alone at all, "assigning" the functions of the second player to electronics. In other words, there is a slot machine.

A fragment of the finalization of the game is shown in the figure, where the newly introduced details and changes in the scheme are highlighted with dashed lines. The numbering of parts continues what was started in the original. The rules of the game have not changed much. The player must take the place of player 1. The functions of player 2 will be performed by the machine.

Electronic referee for the game Who is faster?

After the power is turned on and the player 1 touches the touch contacts E2 "referee", after a time of no more than 5 s, a high level appears at the output of the trigger DD1.4, which lights the "referee" LED. At the same time, this level is fed through the integrating circuit R17R15C3 and resistors R5, R7 to the input S of the trigger DD1.3. The integrating chain determines the "reaction" time of player 2 (automaton).

Suppose, after the command of the "judge" player 1 "gape" and does not touch "his" sensor in time, a high level will have time to enter the input S of the trigger DD1.3. And this is equivalent to a faster touch of the sensor of player 2. The result - the machine won.

If the reaction of player 1 is good and he touches the sensor before the high level arrives at the trigger DD1.3, the machine will lose.

When the game is returned "to the start" by touching the "referee" sensor, a low level appears at the output of the DD1.4 trigger, the capacitor C3 is quickly discharged through the R16VD6 circuit and the trigger output. The machine is "ready to play" again.

The "reaction" time of the machine (from 0,15 to 0,8 s) is set by a variable resistor R17.

If two players wish to play without the participation of the machine, it is enough to set the variable resistor engine to the position of the greatest resistance (to the left according to the scheme) - the reaction of the machine will become obviously worse than that of any of the players, i.e. the machine will not interfere.

If there are malfunctions in the game, manifested in the form of a false extinction of the "judging" LED, you should connect the R input of the DD1.4 trigger (pin 11) to a common wire through a 0,1 uF capacitor.

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