SU408463A1 - VARIABLE DECIMAL IMPULSE COUNTER - Google Patents

Description

The invention relates to automation and can be used, in particular, for counting products on conveyors and other equipment to obtain operational information about the production process of an enterprise and its individual sections.

A multi-digit decimal pulse counter is known, containing in each discharge electromagnetic relays and a control trigger, the output of which is connected to the power supply terminals of the electromagnetic pulse counter electrodes via the switching contacts of the electromagnetic trigger relays.

However, the known device, characterized by complexity, has insufficient functionality.

The aim of the invention is to simplify and extend the functionality.

For this, the input of each subsequent discharge is connected to the output of the previous discharge through the AND circuit, made from the make contacts of the zero-state electromagnetic relays, and the count relay of the last pulse of the previous discharge.

The statement is explained in the drawing.

The drawing shows the electrical circuit diagram of the meter.

The multidigit decimal pulse counter contains relay P1 - P12, diode D, resistors Ril, R2.

Relays P1, P2, diode D, resistors R1, R2 form a trigger, which performs the switching of the power supply circuits of the relay for counting pulses РЗ - Р12.

5 The device operates as follows.

In the initial state, the winding of all relays

de-energized. With the transition of the first pulse

the current contacting control contacts UK: At the same time through the diode D receives power

0 relay coil. Р, and relay Р1 will work. Relay P2 does not work, because its winding will not be short-circuited by the opening contacts of relay P2. The iB of such a state will trigger until the end of the first current pulse. After the end of the current pulse, the control contacts of the control panel open and the winding of the relay P2 will be energized through the closing contacts of the relay P1. The shunt action outside the opening contacts on the winding of the relay P2 stops, since in this case they are connected through diode D, connected in the opposite direction. Relay P2 will work and its switching contacts will prepare a circuit: relay winding P1 - the closing contacts of the relay P2 - control contacts of the MC. In this state (the windings of the relays P1 and P2 are under voltage) the trigger will remain before the arrival of the second pulse

0 current.

With the arrival of the second current pulse, the control contacts of the control center are closed, shunting the coil of the relay P1, which will be de-energized. The winding of relay P2 will remain energized, as it receives power through the control contacts of the control circuit - diode D. - After the end of the second current pulse, the winding of the relay P2 is de-energized, so as the control contacts of the control circuit are open.

The trigger circuit comes back to its original state.

With the arrival of the following current pulses, the trigger state will be similar.

The state of relay P2 repeats the state of relay P1 with a lag of pulse duration, and the trigger has four steady states for two current pulses.

In the initial position, after energization, the winding of the relay RZ is energized through the disconnecting contacts of the relay P1, the disconnecting contacts of the relay P4 and the disconnecting contacts of the relay P5, P7, P9, P11.

Work counter, when in his memory “O.

The closing contacts of the relay RZ prepared the power circuit of the relay P4.

Winding coils of other relays are de-energized. With the arrival of the first pulse, the relay contact of the relay P1 transfers the voltage from the bus P5 to the bus P2, the relay winding de-energizes but the power of relay P4 is energized through the closing contacts of the relay R3, due to the discharge of capacitor C.

Relay P4 self-blocks its closing contacts through the disconnecting contacts of relay P5, P7, P9.

Work counter when in his memory ".1.

The closing contacts of the relay P4 prepare the supply circuit of the winding of the relay P5. After the end of the first current pulse, the switching contact of the relay P2 transfers the voltage from the P4 bus to the –PZ bus. Due to this, there will be a delay for switching off (for the duration of the pulse) relays P4, P6, Pi8, PI O, corresponding to odd current pulses. The delay is required for reliable switching of the counter pulse counting relay.

With the arrival of the second current pulse, the switching contact of the relay P1 will transfer the voltage back to the P5 bus. In this case, the winding of the relay P5 and the closing contacts through the disconnecting relays P6, P8, P10, P12 of the relay P5 self-blocked will receive power. The opening contacts of the relay P5 interrupt the power supply bus of the PZ from the side of the opening contacts of the relay P7, but the relay P4 will receive power through the closing contacts of the relay P2 until the end of the pulse. At the end of the pulse, the switching contact of the relay P2 transfers the voltage to the bus P4 and the winding of the relay P2 is de-energized. In the memory of the counter - “2.

The closing contacts of relay P5 prepared the power supply circuit of relay P6. In the future, the operation of the scheme is similar to that described.

When counting the ninth and tenth of the pulses, the counter operates as follows (0 times.

With the arrival of the ninth pulse, the winding of the relay P12 receives power through the closing contacts of the relay and the closing contacts of the relay P1. The closing contacts of relay P12 are set to

relay P12 on self-blocking. Other closing contacts P12 prepare one more power supply circuit of relay P12 and the third closing contacts of relay P12 prepare the ynpaSJjefJHH circuit as follows discharge counter.

With the end of the ninth pulse, the PM relay is unlocked and its break contacts prepare the power supply circuit for the relay. The closing contacts of the relay P2 closed the backup power circuit of the relay P12. In memory

counter - “9.

With the beginning of the tenth pulse, the switching contact of the relay P1 transfers the voltage to the bus P5, the relay RZ activates and opens the power supply of the relay P12 with its normally closed contacts, however, the relay P12 remains activated along the circuit: the closing contacts of the relay P1 are the closing contacts of the relay P12. The closing contacts of the relay of the relay will restore the control circuit by the next discharge of the counter, the circuit of which (completely similar to the one described) will receive a pulse for counting the first ten current pulses.

With the end of the tenth current pulse, the closing contacts of the relay P2 will break the circuit

supplying the relay P12, which is de-energized, and by its closing contacts, breaks the control circuit to the next discharge.

The described bit (units) of the counter will go to the state "O", the first ten pulses will be fixed in the counter of the next bit (ten), i.e. the counter will go from the state "O to state" 1 and will be in such state up to the 20th pulse, etc.

The number of bits of the described counter is not limited.

Resetting the meter is performed by de-energizing the circuit.

Subject invention

Multi-digit decimal pulse counter containing in each discharge electromagnetic relays and a control trigger, the output of which is via switching contacts

Electromagnetic relays of the trigger are connected to the power supply of the electromagnetic relays of the pulse counter, characterized in that, in order to simplify and extend the functionality, the input of each successive discharge is connected to the output of the previous discharge through the And circuit made from the closing contacts of the electromagnetic relays of zero state neither and the counting relay of the last pulse of the previous bit.