SU528705A1 - Binary two-input reversing pulse counter - Google Patents

Description

one

The invention relates to a pulse technique.

A reverse pulse counter is known, which contains bit triggers, consisting of one relay, whose contacts are located in the charging circuit of the metering capacitor, the reverse trigger and additional relays in each stage, the windings of which are included in control circuit 1.

The disadvantage of this counter is the complexity of the switching circuit and the low noise immunity.

The closest to the technical nature of this invention is reversible; a counter containing trigger cells, each of which consists of a memory relay, a neutral relay, a resistor, and a diode, with the end of the winding of the neutral relay connected}; through a negative busbar resistor. through the diode with the first winding of the memory relay and the opening contact of the neutral relay, which is connected through the diode to the sum of the meter, and the beginning of the winding of the neutral relay is connected via the closing contact of the memory relay to the positive power of the neutral relay (2) .

The disadvantage of such a reversible counter is low noise immunity and failures when switching contacts of the relay, as well as

need for additional relays, which increases the power consumption of energy.

The purpose of the invention is to reduce power consumption and increase noise immunity.

This is achieved by the fact that in the proposed meter, between the positive power bus n and the summing bus of the meter, the disconnecting contacts of all the relays of the counter are connected in parallel, and the positive bus of the counter and the subtracting bus of the counter are connected in parallel to the closing contacts of all the relays of the counter; and the opening contacts of all neutral relays, and one end of the second winding of the memory relay of each trigger cell is connected to the negative power rail, and the other horse Cpd second coil); ene with zamykayuschnm koptazstom neutral relay via a diode with vychitayun1, s counter bus.

The drawing shows a circuit diagram of the proposed meter.

The counter contains trigger cells -3, which include memory relays 4-6, neutral relays 7-9, resistors 10-12, and diodes 13-24. and additional memory relay 25, groups of contacts 26 and 27 of all relays of the counter, contacts 28-30 of the corresponding neutral relays, contacts 31-34 of the sum 3 circuit

ROA, contacts 35-38 of the subtraction circuit, contacts 39-44 of the corresponding memory relays. The windings of all relays in the drawing are not shown.

The counter works as follows. In the initial state of the device, all the relays are turned off and in the state indicated in the drawing. The command for summing or subtracting comes in the form of short pulses (the duration of the pulses is not less than the response time of the relay) by shorting the contacts 31 or 35 shchn summation or subtraction. Upon receipt of subtractors with HIHs, the device will not change its state, since the circuit with the positive power source paiONKHyTa through the group of contacts 26 of all seven relays of the counter. At short-term closure of contact 31 (summation of pulses), the memory relay 4 of the trigger cell 1 is triggered by the first winding, since the source minus through the nerve winding of the relay 4 and the contact 28 of the neutral relay 7, diode 15, contact 3 of the soil 27 contacts is connected to the positive source . This triggers contact 42 of relay 4, but the relay 7 does not turn on, since its winding is installed on the circuit of contacts 27, contact 3, diode 15, contact 28 and diode 13. After removing the summing signal, contact 3 is softened, which ensures that the relay turns on 7 along the circuit: plus a source of power. A lock and a contact 42 of the memory relay 4, a winding of the relay 7, a resistor 10 and a minus power supply. In this case, the switches 28, 36 are opened and the switches 39, 32 are closed, and the contact 7 of the contacts 26 is also closed.

The pulse subtraction signal (short-circuit of co-tact 35) results in: switching off the trigger cell 1. Plus the source through the closed contacts 26, contact 35, diode 16, the closed contact 39 turns off the memory relay 4 through the second winding and minus the source of the nitann. In this case, the relay 7 is not turned off, although the contact 42 is turned off, since diodes 16, 14, resistor 0, minus the power supply, value the current flowing through the relay 7 winding. If, after the first pulse, a second pulse arrives and a summation, then the trigger 1 cell also turns off, but cell 2 is simultaneously turned on, since the contact 32 of relay 7 is closed after passing the first pulse of summation. After the passage of the seven totalization pulses through pin 31, the trigger cells 1–3 will be turned on, and the switches 32–34 are closed. Note that contact 32 closes after the removal of the seventh pulse. The eighth pulse turns on the memory relay 6, with all the memory of the trigger cell relays turned off and ns; The relay relays 7-9 will be turned on until the eighth emulsion is removed, after which contacts 32-34 open. Upon receipt, for example, of the 15th summing pulse, the group of contacts 37 turns out to be open, since all of the counter relays are turned on. At the same time, further accumulation of summation pulses is impossible.

Groups of contacts 26 and 27 ensure reliable operation of the counter in the zero and single state of all its trigger cells, which allows the use of a revision counter of pulses in multi-position

automatic control stepwise on or off.

F o rmu l invention

Binary dual input reversible counter and pulses, containing a trigger cell, each 3 of which consists of a memory relay, a neutral relay, a resistor and diodes,

t, the end of the winding of the neutral relay is connected through a resistor with a minus thread, through the diode to the first winding of the memory relay and the disconnecting coil of the neutral relay, which is connected via diodes to the pole; m; A counter is connected, and the start of the neutral relay winding is connected via a closing relay contact of the memory with a zero voltage of nitah and through a diode with an open contact of the neutral relay that differs

By the fact that, in order to reduce power consumption and increase noise immunity, the disconnecting contacts of all the relays of the counter are connected in parallel between the positive power supply and the summing meter, and

Parallel closing contacts of all the relays of the counter are connected in parallel between the null supply bus and subtracting meter bus, the closing and closing contacts of all neutral relays are sequentially connected to the summing and subtracting meter H, and one end of the second winding of the memory relay of each trigger cell is connected to the minus power bus, and the other end of the second winding is connected to the closing H .uiM contact of the neutral relay and through a diode with a subtracting meter.

Sources of information taken into account in the examination;

1. Auth. St. L 230248, cl. H OZK 21/00 from 12.08.59

2. Swiss patent jYo 451243, cl. H OZK 23/24 from 1968 (prototype).