SU1725403A1 - Pulse counter - Google Patents

Abstract

The invention relates to measurement technology, automation and telemechanics. The aim of the invention is to increase reliability by reducing the number of elements with a conversion factor greater than four. The device contains four memory cells, each of which consists of a relay 1.1 (1.2, 1.3, 1.4), three dinistors 2.1, 3.1, 4.1 (2.2-2.4, 3.2-3.4, 4.2-4.4), a resistor 5.1 (5.2, 5.3, 5.4) and diode 6.1 (6.2, 6.3, 6.4). To achieve the goal, a device has a control circuit for memory cells on pins 7.1-7.4, switching contacts 8.1-8.5, capacitors, capacitors 10.11 and new functional connections. 1 il.

Description

The invention relates to the field of measurement technology, automation and remote control.

The aim of the invention is to increase reliability by reducing the number of elements at a conversion factor of more than four.

The drawing shows a circuit diagram of a pulse counter.

The pulse counter contains four memory cells with prices of bits 1-2-4-8, respectively, each of which consists of relay 1.1, 1.2, 1.3, 1.4, dynistor 2.1,

2.2,2.3, 2.4, 3.1, 3.2, 3.3, 3.4, 4.1, 4.2, 4.3, 4.4, resistors 5.1, 5.2, 5.3, 5.4, diodes 6.1, 2.6,

6.3.6.4, as well as, in addition to the memory cells, the control circuit of the memory cells, consisting of switching contacts 7.1, 7.2, 7.3, 7.4, switching contacts 8.1, 8.2, 8.3, 8.4, 8.5, dynistor 9, capacitors 10 and 11 , the counting input 12 and the output of the counter 13.

The counter works as follows.

The first counting pulse, arriving at the counting input 12 through the switching and disconnecting contact 7.1, turns on the relay 1.1 and dynistors 2.1,3.1,4.1. When a second counting pulse appears on the counting input through the closing contact 7.1, relay 1.1, switching and opening contact 7.2, relay 1.2, switching and closing contact 7.4, relay 1.4 switches on relay 1.2 and dynistors 2.2, 3.2, 4.2. The opening contact 8.2 relays 1.2 are disconnected from the power source of relay 1.1 and dynistor 3.1. Dinistors 2.1 and 4.1 remain on. If for any reason the relay 1.2 releases its contacts, its disconnecting contact 8.2 closes, so that through the switched on dynistor 2.1 the voltage on the relay coil 1.1 will be supplied again, which will work through the closing contact 7.1 and the switching and opening contacts 7.2 and 7.4 relays 1.2 and 1.4 will turn on relay 1.2. If the supply voltage decreases to the release level of the relay 1.2, the latter may turn on after the restoration of the supply voltage, since there will be two open dynodors 2.2 and 3.2 in its circuit. Failures in contacts 7.1, 7.2, 7.4, 7.3 also do not disrupt the operation of the meter. When the third pulse arrives at input 12 through the closing contact 7.1, relay 1.1 is activated. Thus, relays 1.1 and 1.2 are turned on, forming a code combination, and contacts 7.1, 8.1 relays 1.1 and contacts 7.2, 8.2 relays 1.2 are closed. The fourth pulse turns on the relay 1.3 through the closing contacts 7.1 of the relay 1.1, 7.2 relay 1.2, the closing contact 7.3 of the relay 1.3, and the closing contact 8.3 of the relay 1.3 turns off the relay 1.2 and the closing contact 8.2 of the relay 1.1 turns off the relay 1.1. The code combination of the counter corresponds to four, since the bit relay is switched on with a discharge price equal to 4. The fifth pulse triggers the relay 1.1, the code combination of the counter is equal to. The sixth pulse turns on relay 1.2, turns off relay 1.1 by terminal 8.2, the counter code combination. The seventh pulse turns on relay 1.1, the code combination of the counter is 1 + 2 + 4 7, since relays 1.1,1.2,1.3 are on. The eighth pulse switches on relay 1.4 through closing contacts 7.1, 7.2, closing contact 7.3 of relay 1.3, the code combination of the counter is 8, and relay 1.1, 1.2, 1.3 is disconnected by contacts 8.4, 8.5 of relay 1.4, 8.3 of relay 1.3; The ninth pulse activates relay 1.1 through the opening contact 7.1, the code combination of the counter is. The power supply circuit of the relay 1.1 passes through the dynistor 2.1, 3.1, the winding of the relay 1.1, the opening contact 8.2, the closing contact 8.5 and the dynistor 9. The capacitor 10, charging, provides the forced switching on of the relay 1.1. When the voltage on the capacitor 10 reaches the open-voltage voltage of the dynistor 9, the latter opens.

Similarly, the supply circuits of the relay coils are formed when the third pulse of the sixth, seventh and eighth pulses are applied. In this case, the relay 1.4 becomes self-powered with the closing contact 8.4, and the closing contact 1 provides the power supply circuit to the relay 1.4 during the charging time period of the capacitor 10.

The capacitor 11, charged along the circuit: common connection point dynistor 2.4, 3.4, resistor 5.4, capacitor 11, the counter output 13, the closing contact 7.4, the closing contact 7.2, the closing contact 7.1, input 12, causes a reverse current through the dynistor 3.4, 4.4, whereby the dynistors 2.4, 3.4 are closed, and the relay 1.4 is turned off. The counter returns to its initial state at the falling edge of the ninth pulse. In the future, the scheme works similarly.

Claims (1)

Invention Formula A pulse counter containing four memory cells, each of which consists of a relay, three dinistors, a resistor and a diode shunting the relay coil, the second output of the relay coil is connected through a series of first and second dynodors to a positive power line; at the same time the connection point of the dynistor is connected to the first terminal of the relay the higher bit through the resistor and the third dynistor, and the connecting point of the dynistors of the last bit is connected to the first terminal of the winding of the first discharge relay through the resistor and the third dynistor, which is different in order to increase reliability by reducing the number of elements at a conversion factor of more than four, a memory cell control circuit is introduced, including the first and second capacitors, an additional dynistor connected in parallel with the first capacitor, the cathode of the additional dynistor is connected to negative the power bus and the anode to the connection point of the closing contacts of the second groups of switching contacts of all bits, the opening contacts of these groups are connected to the negative power supply bus, except for the second bit opening contact, which is connected to the switching terminal of the last battery yes, and the switching contacts of these groups, besides the contact of the relay of the last discharge, are connected to the first terminals of the corresponding windings of the relay; contact of the second discharge - to the first discharge, contact of the third discharge - to the second discharge, contact of the first discharge - to the last discharge, and contacts of the relay the bit is connected to the third bit by the opening contact, the closing contact to its discharge and the switching contact to the negative power supply bus, the first capacitor is connected to the second contact of the third switching circuit of the cell control circuit and to the junction point by the second output the first and second dinistors of the last bit cell, the opening contacts of the first switching groups of the cell control circuit are connected to the junction points of the first and second dynistors the first and third bit rows, a break contact of the relay and the last bit is connected to the junction dinistorov second discharge, the switching contacts of said groups are respectively connected; the contact of the relay of the first discharge is with the input of the counter, the contact of the relay of the second discharge is with the closing contact of the relay of the first discharge, the contact of the relay of the last discharge is with the disconnecting contact of the relay of the second discharge, the contact of the relay of the third discharge yes, the last-turn relay contact is connected to the first output of the first capacitor and to the output of the counter.