SU853795A1 - Reversible pulse counter - Google Patents

Description

(54) REVERSIBLE PULSE COUNTER

one

The invention relates to a pulse technique, in reality to the elements of automatic relay circuits - to reversible counters of electrical pulses and is intended to add and subtract incoming pulses.

The counters of electrical pulses are known, made on electromagnetic relays with gating the input signal by the contacts of the relay of each cell, in which the output of each cell is connected via gates to the input of the next and previous relays, and the switching contacts of even and. the odd-numbered relays gating input signals are combined into two independent electric circuits connected to the power source through a switching contact at one end, the other ends of these circuits of consecutively connected contacts of even and odd relays are connected respectively to the outputs of the first and second counter cells. Disadvantage - low speed i.

A reverse pulse counter is also known, which contains bit cells on remote switches.

and diodes. The disadvantages are the complexity, low reliability of the device and the inconvenience of perception of information by the operator 2,

The aim of the invention is to increase the reliability of operation, simplify the device and facilitate the perception of information by the operator.

The goal is achieved

10 in that in a reversible pulse counter containing discharge cells on remote switches with input gating into two independent electrical circuits,

15 which are connected to the first power supply bus, a code conversion unit is inserted, the remote switches are connected to the counting ring, so that the first terminals of the first odd and second windings of the even remote switches are connected to the first independent electric circuit, the first windings of even and second odd windings remote switches to the second independent circuit, the second winding pins of each remote switch are connected to the second power supply bus through the closing contacts you and the previous razmy30

the bent pins of the subsequent remote switch are in series.

The code conversion unit consists of two symmetrical circuits, built on the switching contacts of the remote switches of the discharge cells, the switching contacts starting from the remote switch of the second bit cell, connected to the closing contacts in one of these circuits, and to the other contacts of the remote switches of the previous size The first cells, the switching contact of the remote switch of the first bit cell is connected to the input, and the remaining contacts of these circuits are connected to the corresponding information the output of the code conversion node.

Figure 1 shows the electrical circuit diagram of the meter; in fig. 2 is a circuit diagram of a code conversion unit (for transition from a binary to a decimal system).

The counters consist of remote switches (PD) 1-7, with remote switches 1-5 performing one decade (from O to 9) in the binary system, and switches B and 7 gating the input signal to two independent circuits. In the counting part of the device are used: the remote switch 1 - contacts 8-10, the remote switch 2 - contacts 11-14, the remote switch 3 contacts 15,16, the y-diode switch 4 - contacts 17,18, the remote the switch 5 is pin 19, the remote switch is b - contact 20, the remote switch 7 is pin 21.

The code conversion node contains the following elements: contact D 1-22, pins DP 2, 23, 24 pins DP 3-25 and 26, pins DP 4-27 and 28 pins DP 5-29 and 30. Pin 31 provides the counting pulses to device input.

For the initial position of the contacts (the position shown in Fig. 1), the position of the contacts is taken after a pulse has been applied to the right windings of the remote switches 1-7.

The zero position of the counter is the position when the second (right) windings of the remote switch 1-7 were energized.

The device works as follows.

When the power is turned on, the left winding of the remote switch 6 is activated, while the contact 20 is shifted to the left position. The device is ready to start the account.

When the first counting pulse arrives (i.e., contact 31 is shifted from the left position to the right position), the voltage goes to the first independent circuit, and the first (left) windings of the remote switches 7 and 1 are activated. Contacts 8-10 of the remote switch 1 transition t: 8 - to the closed position, 9 - to the open 10 from the right position to the left position, contact 21 of the remote switch 7 from the right position to the left position.

The connections obtained do not provide new circuits for propagation of the counting pulse that made these switchings. Thus, the duration of the input pulse or the fragmentation of the contact 31 when the closure does not cause errors in the account.

The end of the pulse is the return of pin 31 from the right position to the left position. Since the contact 21 is already in the left position, the right winding of the remote switch 6 is triggered, throwing the contact 20 to the right position, preparing the circuit for the second pulse.

The second counting pulse (pin 31 is moved from the left position to the right) comes to the second independent circuit, to which the left winding of the remote switch 2 is connected, the other output of the left winding is switched from the first counting pulse (pin 8 is closed). From the second counting pulse, the left winding of the remote switch 2 and the right winding of the remote switch 7 are triggered, while the contacts 11-1 of the remote switch 2 go t: 11 - to open position 12 - to closed position, 13 to closed position, 14 - to open position , pin 21 of remote switch 7 goes from left to right.

At the end of the second counting pulse (sensor contact 31, the pulse moves from the right position to the left position) the left winding of the remote switch 6 is activated, switching the contact 20 to the left position, preparing the circuit for passing the third counting pulse, which already comes to the first independent circuit, which is connected to the left winding of the remote switch 3. The lower supply circuit of this winding is also prepared (by contact 13, closed from the second pulse) for receiving the third pulse. Thus, from the third counting pulse, the left winding of the remote switch 3 is activated.

From the fourth pulse, the left winding of the remote switch 4 is activated, from the second to the left winding of the remote switch 5, from the sixth pulse the right winding of the remote switch 1 is activated, from the seventh to the right winding of the remote switch 2, etc.

To switch from direct counting to reverse, it is necessary to swap the connection points of the lower terminals of the right and left windings of the remote switches 1-5.

To obtain a multi-bit pulse counter, the output of the previous decade is connected to the next input.

Claims (2)

1. A reversing pulse counter containing bit cells at remote switches with input gating into two independent electrical circuits that are connected to the first power supply bus, which is different in order to increase reliability, simplify the device and facilitate perception. operator information into the device If in remote switches x 1-5, the right position is accepted (i.e. the position of the remote switch after applying a pulse to the right winding) as conditional O, and the left position (after applying a pulse to the left winding.) As conditional 1, then the nature of the account in the binary system can be represented as a table. A code conversion unit is inserted, the distal switches are connected to the counting ring, so that the first terminals of the first windings of the odd and second windings of the even remote switches are connected to the first independent electrical circuit, the first windings of the even and second windings of the odd remote switches to the second independent circuit, the second terminals windings of each remote switch are connected to the second power supply bus through the make contacts of the previous one and the break contacts of the next power supply switch in sequence. 2. A pulse counter according to claim 1, characterized in that the code conversion unit consists of two symmetric circuits built on the switching contacts of the dis-. tantal switches of the discharge cells, with switching contacts, starting with the remote switch of the second bit cell, in one of these circuits are connected to the closing ones, and in the other - to the disconnecting contacts of the remote switches of the previous bit cells, the switching contact of the remote switch of the first bit cell is connected to the input, and the rest contacts of these circuits - to the corresponding information outputs of the code conversion node. Sources of information taken into account in the examination 1. USSR author's certificate No. 310408, cl. H 04 L 13 / 12,1971. 2. USSR author's certificate number 372725, cl. H 04 L 13/12, 1973.