SU788365A1 - Code-to-time interval converter - Google Patents

Description

(54) CODE-TEMPORARY INTERVAL CONVERTER

one

The invention relates to a pulse technique and can be used in automated control systems.

The known converter is a code-time interval, the contents of a control trigger, a pulse counter, and an element, one input of which is connected to the output of the pulse generator.

However, this converter has low accuracy and limited functional capabilities.

A code-time interval converter is also known, which contains a 5 controlling trigger, the first input of which is connected to the input bus, and the second input to the output of the pulse counter, element I, the first input of which is connected to the output of the reference frequency generator 20, the register whose outputs connected to the bit inputs of the pulse counter 2.

However, this converter also has 25 low accuracy and limited functionality.

The purpose of the invention is to improve accuracy while expanding functionality. thirty

The goal is achieved by the fact that in the code-time interval converter containing a control trigger, the first input of which is connected to the input bus, and the second with the output of the pulse counter, element I, the first input of which is connected to the output of the reference frequency generator, a register whose outputs through the coincidence unit is connected to the bit inputs of the pulse counter, an inverter is inputted, the input of which is connected to the first input of the control trigger and to the reset input of the pulse counter, the output is connected to the control inputs of the match block, This output of the control latch is connected to the second input of AND, whose output is connected to the counting input of pulse counter.

FIG. 1 shows a structural electrical converter circuit; in fig. 2 - diagrams.

The transformer code-time interval contains the control trigger 1, the first input of which is connected to the input bus, and the second - with the output of the pulse counter 2, the IZ element, the first input of which is connected to the output of the reference frequency generator 4, the register 5, the outputs of which through the block

matches b are connected to the bit inputs of pulse counter 2, the inverter 7, whose input is connected to the first input of control trigger 1 and to the reset input of counter pulses 2, the output of inverter 7 is connected to the control inputs of coincidence block b, and the output of control trigger 1 is connected to the second input element And 3, the output of which is connected to the counting input of the pulse counter 2,

The device works as follows.

The input pulses (frequency F) (Fig. 2a) are fed to the first input of the control trigger 1, whereby the control trigger 1 is set to 1 and the beginning of the output rectangular pulse (Fig. 2b) is formed at its single output. Element I 3 opens and pulses with a frequency (Fig. 2b) from the output of the reference frequency generator 4 are sent to the counting input of the pulse counter 2 (Fig. 2d). Input pulses 2 are fed to the reset input of the pulse counter 2, and with the arrival of each pulse with a frequency F, the pulse counter 2 is zeroed. After the pulse counter 2 is reset by the signal from the output of the inverter 7, the input of which receives input pulses, the number N from the outputs of register 5 is rewritten in the reverse code via a matching block b into the pulse counter 2. The number N is written to the pulse counter 2 after it zeroing with frequency f. At the end of the pulses, the signal to the reset input of the pulse counter 2 is not received and the number N is written to it. Over time, the pulse counter 2 is repetitive and the pulse from its output sets the control trigger 1 V, state O (fig.2d), the formation is pumped out output rectangular pulse. Element And 3 closes.

When a packet arrives, pulses after a time greater, the operation of the converter is repeated. If the arrival time of the next batch of pulses is less than NT2, then this gap is not recorded by the transducer, since pulse counter 2 is zeroed with the first pulse of the second pack. The extension time of the output rectangle of the pulse is N.T2 and determines the magnitude of the fixed burst of the burst pulses. In the transducer, the value of the fixed discontinuity can be set to the desired value and does not depend on the end of the bursts of the pulses.

Claims (2)

1. USSR author's certificate No. 363207, cl. H 03 K 13/20, 05.24.19 2. USSR author's certificate No. 508924, class, H 03 K 13 / 20.25.10.1974 (prototype). Buyod a eight y d