SU1555860A1 - Counter with undestractable information - Google Patents

Abstract

The invention relates to a pulse technique and can be used in various devices of discrete automatics, in which information is stored when the supply voltage is removed. The purpose of the invention is to expand the scope by increasing the capacity of the counter. The counter contains two-winding electromagnetic elements 1 - 4 switching with switching contact groups, respectively, 1.1, 1.2, 2.1, 2.2, 3.1, 3.2 and 4.1, equipped with fender 5 and working 6 windings, a group of six separation diodes 7, output device 8, equipped with inputs 9-16, output 17 counting pulses, a common power bus 18, an output power supply bus 19, a coupling element 20, and may also contain shunt diodes 21, a driver 22, a power bus 23 and a counter input 24. 1 il.

Description

At the vertices of the graph, the states of electromagnetic elements defined for a given counter are from left to right in the order of: first 1., second 2, third 3, and fourth A. The states of the counter are uniquely determined by the states of the electromagnetic elements. These states are numbered not a column from O to 11, in the absence of pulses at the input 17 are stable. Under the action of a pulse of positive polarity and a strictly defined duration at the input of 17 counting pulses, the counter from any state goes into a neighboring state along the arrow of the graph. In any stable state of the meter, there is only one chain of electromagnetic elements closed in this state, providing illumination for the indicators of the digit corresponding to the state number of the meter.

The duration of the pulse arriving at the input of 17 counting pulses should not exceed the time interval starting from the front

40

45

the front of the pulse and ending at the moment of switching the contact group 1.1 of the electromagnetic element 35 1 to the opposite state under the action of this pulse. An impulse of such a strictly defined duration can be formed, for example, using thyristor Shaper 22. For this, the thyristor anode, which is part of shaper 22, is connected to the positive power bus 23, the cathode to the input 17 of the counting pulses, and the control electrode to 2k input counter. In this case, short (differentiated) pulses of positive polarity are fed to the input 2k of the counter. Under the action of each pulse, the thyristor of the form 50 bodies 22 opens, allowing current to flow through one of the windings (5 or 6) of the electromagnetic element 1 until the switching contact 1.1 of the electromagnetic element that 1 breaks during the switching process of the current flowing through the thyristor, as a result the thyristor is closed. Thus, to form

at

A pulse of a strictly defined duration at the input of 17 counting pulses.

Consider as an example one of the cycles of operation of the counter modulo 12 with non-destructive information. Let the counter be in the initial state 0m, when all the electromagnetic elements 1-4 are disconnected (i.e. the contacts of the electromagnetic elements are in the state in which they are shown in the drawing). In this state, in the presence of supply voltages on buses 18 and 19, the current flows from the positive power bus 19 through the communication element 20 (for example, a fuse) the switching and opening contact of the second contact group 1.2 of the disconnected first electromagnetic element 1, through the seventh input 15 the input device 8, through the filament lamp filament, which provides the illumination of the digit O, through the decoupling diode through the corresponding filament lamp, through the eighth input 16 of the output device, through the opening and switching contacts You are the second switching contact group 2.2 of the second electromagnetic element 2, through the disconnecting and switching contacts of the first switching contact group 4.1 of the fourth electromagnetic element 4 to the negative power bus 18.

In addition, in this state, the working windings of the first 1 and fourth 4 electromagnetic elements are included in the cathode circuit of the locked thyristor, and the working winding of the first 1 electromagnetic element is switched on through the switching and opening contacts of the first contact group 1.1 of the first electromagnetic element

This 1, and the working 6 winding of the fourth electromagnetic element 4 is additionally also through the disconnecting and switching contacts of the first contact group 4.1 of the fourth electromagnetic element. The action of a short (differentiated) pulse of positive polarity at the input 2k of the thyristor driver 22 causes the driver thyristor 22 to open and current flows through the working windings from the electromagnetic elements of the first 1 and fourth k (from the positive power bus 23 to the common negative power bus 18 ).

0

five

0

BO

five

0

in

In the process of switching the first electromagnetic element 1 and its contact group 1.1, the cathode circuit of the thyristor is broken, as a result of which it is turned off. Upon completion of the transient processes associated with the inclusion of electromagnetic elements 1 and 4, the counter is in state 1, which, in accordance with the transition graph, corresponds to the off state of the second 2 and third 3 electromagnetic elements and the on state of the first 1 and fourth 4 electromagnetic elements. In this state, the flow of current from the positive power supply bus 19 through the communication element 20, the switching and closing contacts of the second contact group 1.2 of the switched on first electromagnet element 1, through the sixth input 14 of the output device 8, through the filament lamp, provides Reflecting the number 1, through the corresponding diode lamp, the isolating diode, through the fourth input 12 of the output device, through the disconnecting 2.1 and switching 3.2 contacts, through the closing and switching 4.1 contacts to the negative shichu 18 th power.

Thus, the meter provides a score factor of 12.

Claims (1)

Invention Formula Nondestructive information counter containing four two-winding electromagnetic switching elements without self-return and output device, the switching contact of the first contact group of the first dual-window electromagnetic switching element without self-return is connected to the input of the counting pulses, opening and closing contacts - to the first terminals of the working and breakaway windings of the first two-winding switching element without self-return, the second terminals of which are connected to the common bus to which the switching contact of the first contact group of the fourth two-winding switching element without self-return is connected , the closing contact of the first contact group of the second two-winding electromagnetic switching element without self-return is connected to the first terminal of the fender breaker weave the second two-winding electromagnetic switching element without self-return, the closing contact of the first contact group of the third two-winding electromagnetic switching element without self-return is connected to the first output of the breakaway winding of the third two-winding electromagnetic switching element without self-return and to the first input of the output device, the normally open contact of the third group of the third two-winding electromagnetic switching element without self-returning sub-keys to the first output the secondary third-winding electromagnetic switching element winding without self-return and to the second input of the output device, the closing contact of the second contact group of the third two-winding switching electromagnetic element without self-return is connected to the third input of the output device, the output power supply bus is connected to the second contact group through the switching contact of the second contact group the first two-winding electromagnetic switching element without self-return, the closing contact is It is connected to the sixth input of the output device, the opening contact of the first contact group of the fourth two-winding electromagnetic switching element without self-return is connected to the first output of the working winding of the fourth two-winding electromagnetic switching element without self-return, the closing contact of the first contact group of the first two-winding switching electromagnetic element without self-return through the first and second separating diodes are connected to the second pins, respectively, of the working and outgoing a single winding of the second two-winding electromagnetic switching element without self-return, the opening contact of the first contact group of the first two-winding switching electromagnetic element without self-return through the third and fourth isolation diodes is connected respectively to the second terminals of the working and the breaker windings of the fourth double-winding electromagnetic switching element without self-return, and the fact that, in order to expand the application area by increasing the capacity of the counter, the closing contact of the first contact group of the fourth two-winding switching electromagnetic element without self-return is connected to the first end of the fourth winding fourth two-winding electromagnetic switching element without self-return and to the switching contact of the second contact group of the third two-winding switching electromagnetic element without self-return, the opening contact of which is connected to the switching contact of the first contact group of the second two-winding switching electromagnetic element without self-return, the opening contact of which is connected to the first terminal of the working winding of the second two-winding switching electromagnetic element and self-return to the fourth input of the output device, and the closing contact - to the fifth input of the output device, the opening contact of the first contact group the fourth two-winding electromagnetic switching element without self-return is connected to the switching contact of the second contact group of the second two-winding electromagnetic switching element without self-return, the normally open contact of which is connected to the eighth input of the output device, and the closing contact to the switching contact of the first contact group of the third two-winding electromagnetic switching element without self-return, without switching contact of the first contact group of the first two-winding elec a switching magnetic element without self return via the fifth and sixth separating diode) is connected to the second terminals of the working and breakaway windings of the third two-winding electromagnetic switching element without self return, respectively.