SU368630A1 - - Google Patents

Description

REVERSING DEVICE FOR PULSES ACCOUNT

I

The proposed device is intended for counting pulses and can be used, for example, for counting wagons at an underground loading point of coal mines and mines in the mining industry in the systems of supervisory control of accounting and control.

Electromechanical, relay, electronic and other pulse counting devices are known.

Multichannel devices are also known for counting coincident pulses containing memory, separation, and adders.

However, in such devices, the simultaneous existence at any input of a counter of signals from different objects or when there are signals simultaneously for summation and subtraction at two counter inputs, the counter malfunctions. As a result, his readings are distorted, which makes it impossible to use the indicated counters in devices in which signals from different objects can arrive independently of one another and partially coincide in time.

The aim of the invention is to increase the accuracy of the device.

This goal is achieved in that the first two sensors are connected to the inputs of the first pulse separation node, the outputs of which are connected to one input of the second pulse separation node, the other inputs switched to the third sensor. The outputs of the second pulse separation unit are connected to one input of the third pulse separation unit, etc. The outputs of the last pulse separation unit are connected to a reversible counter.

FIG. 1 shows a functional diagram of a reversing device for pulse counting; in fig. 2 - pulse separation unit, made on the relay-contact elements.

The pulse counting device comprises sensors / - / by the number of objects, pulse separation units 2-2, and a reversible counter 3 of a known type and allows counting pulses from two or more sensors.

The input pulse separation unit 2 contains At-RP electromagnetic relays (PI and PZ relays are not shown in the drawings), D1-Db semiconductor diodes, PI contacts of the output relay of the first sensor channel, readout of the first sensor, contacts P2 of the output relay the summation channel of the second sensor, and the contacts of the Jaz output relay channel subtract the second sensor.

The device works as follows.

A series of pulses from the contacts PI + or / 2 + is accompanied by a series of pulses at the input of the meter.world of counter 1.

A series of pulses from the contacts of the RG or Pr is accompanied by the operation of the relay PI and Pz and the corresponding series of pulses at the subtraction input of counter 3.

With a series of pulses from the operation of the contacts PI + RG PZ P {RG, etc., the device operates as follows.

From the PI + contact actuation, a signal is sent to the summing input of counter 3. From the first PZ contact actuation, the Pit relay is turned on, then the signal disappears at the summing input and appears at the subtraction input. The following contact triggers cause the appearance of a corresponding number of input signals to read the counter.

With a series of pulses from the triggering of the contact sequence PZ PZ P-D PZ PI and so on, the triggering of the contact Pg turns on the relay Pi ,, and the meter subtract input / signal appears. When the PI + contact is activated at the first pulse, relay P4 is turned off, the signal at the subtraction input of counter 3 disappears, and the signals at its input summing up appear. The subsequent operation of the PI + contact leads to the corresponding number of signals at the input of the summing up of the counter 5.

In the other order of signal arrival, the circuit operates a similarly.

Subject invention

A reverse pulse counting device comprising sensors, pulse separation units and a reversible counter, characterized in that, in order to increase the counting accuracy, the first two sensors are connected to the inputs of the first separation node of the pulses, the inputs of each subsequent separation node pulses and the corresponding sensor, and the outputs of the last imimuls separation node are connected to a reversible counter.

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