SU416858A1 - - Google Patents

Description

one

This invention relates to digital measurement technology.

A device is known that contains an operational and zapom, a counter and a key. However, they are distinguished by cumbersome equipment and reduced speed caused by the coincidence of the 1 and crapujHx and Junior decade codes, due to delays introduced by the counting elements, may not coincide with the load on the circuit. “Hell.

The proposed device differs from the known fact that, in order to increase the reliability and reduce / reduce the performance requirements of the converter elements, a trigger and a clock pulse selector are inputted to it, and the output of an operational counter is connected to the first trigger input, the output of which is connected to the key with the CO input ONIrBiHoro of the counter and directly from the control of the clock selector input, the output of the first decade of the memory counter is connected to the iBTOpoMy and in the trigger, and the outputs of the remaining ten of its inputs are set ovki .nul in respective operative counter decades.

FIG. 1 is a block diagram of the device; in fig. 2-time diagrams: we.

The device contains key 1, operational counter 2, consisting of decades 3i-3p, memorized

A counting counter 4 consisting of decades 5i4-5n, an assembly circuit 6i-6271-1, trigger 7, and a selector 8 clock pulses.

Consider the operation of the scale converter of frequency-time signals together with the time diagrams. Initially, trigger 7 is in such a COCTOHHHII, in which key 1 is closed. All the decades of the counters, except the second decade 62 of the storage counter 4, in which the unit is pre-recorded, are in the zero state. An additional code is entered into the memory counter 4. convertible time interval (Lo - the capacity of the counter, the converted signal, filled with frequency / i).

The command "start selector 8 clock pulses selects ten frequency pulses

L, which come through the 6i-62n-i assembly circuits to the counting input of all decades of counters except the first decade 3i of operational counter 2. When calculating 10-.Vj pulses, where Ni is the code in the decade of 5g memory

counter 4; the overflow pulse of this decade 5; set to zero of the corresponding decade 3; operational counter 2. The remaining 10- (10-jVi) Ai pulses from the output of the selector 8 clock pulses will be fixed in decade 3, - the operational counter.

numbers L, - Hack is a census of codes of all decades, Chrome (Younger.

Code: the youngest decade 5i of the wrinkling counter 4 does not directly write inepByio decade 3i of the operation counter 2, but controls the key, 1. The command "start key 1 is closed. Only when rendering 10-L | pulses From the output of the selector 8 clock pulses, the IMLS of the first decade of the first decade 5i will trigger trigger 7, opening the switch itself 1, through which the frequency pulses / 2 will start to arrive at the input of the operational counter 2. At the moment of overflowing the operational counter trigger 7, it bends it. With this, the switch 1 will close,: the selector of 8 clock pulses is restarted and the entire inpouecc is traversed. Due to the use of such a scheme, it is possible to eliminate the Lausa, between reproducible time intervals, by aligning the process of recording the code with the local reproduction of the converted interval.

Output pulses follow with a period

repeat Guy. Coefficient

L

the scaling transform / C is determined by the ratio of salary Jup1, their frequencies / i and / r. To clarify the work of the device generator, we consider a specific example. Let 564, then the additional code of this number is equal to 436. Due to the fact that the second decade Sg was preliminarily installed in a single state, the code of number 44 will be fixed in the memory of 4 counts. According to the "Start selector In clock pulses, ten “The pulsations (diagram 9) of the clock / 2, which were accessed through the assembly circuits and the input of the decades of memory and its memory, are counted. After calculating 6 pulses (chart 12), the output pulse

second decade 52 of memory counter 4 will reset to zero the second decade 82 of operational counter 2. Four pulses (diagram 13) from the output of selector 8, which came after the reset pulse, will fix the code of number 4 in this decade of operational counter. In the older decade. Thus, the code of number 440 will be rewritten into the operational counter. After calculating four pulses and 11 pulses from the output of the selector 8, the output pulse of the first decade 5i will remember Ayush, its counter will transfer the trigger 7, the key 1 will start to enter the input of the operational counter. After 560 pulses are miscalculated, it returns. The overflow pulse will trigger trigger 7 and start selector 8. Then the whole cycle will be repeated. During the time between the Lusk time and the output impulse of the operational counter, key 1 will receive a total of 564 Impulses, that is, a number equal to the code of the signal being converted.

Subject: and z o breteni

A time-frequency signal scaler, containing operative and memorized counters and a key, is distinguished, and with the fact that, in order to increase the reliability and reduce the performance requirements of the converter elements, a trigger and a clock pulse selector are introduced into it, and output of the operational counter. connected to the first input of the trigger, the output of which is connected via a key to the input of the operational counter and directly from the control input to the clock selector input, the output of the first decade is remembered tchika connected to the second input of th flip-flop, and outputs on its other decades - to the inputs of a zero setting sootvetstvuyushaya their decades olerativnogo counter. : I ZЕЛЩ --1 Exit Q: L4гП - 1,

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