SU547031A1 - Device forming variable time intervals - Google Patents

Description

one

The invention relates to radio engineering, in particular, to a pulsed technique, and is intended to form

J i j psm r - o

Time intervals

where Ti is the t-th variable interval;

Tperem- variable part of the t-ro interval;

Ta is the initial time interval.

Devices are known that form variable time intervals containing a clock pulse generator, a counter, a frequency divider, an output trigger, a code comparison device 1.

However, the known devices provide only monotonous step change of intervals in accordance with the change of the counter code, either continuously increasing or continuously decreasing time intervals.

Of the known devices, the closest in technical sense is a device for generating variable time intervals, including a generator of synchronizing pulses, two AND elements, two counters, and a control trigger.

However, this device does not provide the construction of a given law of variation of intervals.

In order to obtain any step change in time intervals, the proposed device for generating variable time intervals, containing a clock pulse generator, the output of which is connected to the first inputs of the first and second elements AND, whose outputs are connected to the inputs of the first and second scaling devices, respectively, the output of the first scaler is connected to the first control trigger input, and the control trigger outputs are connected to the second input of the first and second elements, respectively appropriately, include / C match items,

the OR element and the register, while the output of the control trigger is connected to the clock input of the register, the first inputs of the matching elements are connected to the bits of the second recalculated device, the second inputs

They are connected to the outputs of the resistor bits, and the outputs are connected to the inputs of the OR element, the output of which is connected to the spindle of the installation of the second recalculation device to the initial state and to the second input of the control trigger.

FIG. Figure 1 shows the structural electrical circuit of the device for generating the time intervals; in fig. 2- time diagrams of the device for

the occurrence of a TI sequence,

T2, T ,, t ,, t ,, where T, T2, T, Tg; T, T ,, time intervals varying according to a stepwise nonmonotonic discontinuous law.

The device contains a generator of synchronizing pulses, a first element AND 2, a control trigger 3, a second element AND 4, a first counter-metering device 5 forming Go, a second counter-device 6, a register 7, elements 8-10 of coincidence, an element OR 11.

The law of changing time intervals can be any.

Let it be necessary to form a sequence of time intervals Ti, TZ, TZ Ti TS, where

Гг 7перем.г-ЬГо AIj-r-l- / T;

where t is the period of the following pulses of the master oscillator 1; t is the capacity of the counting device 5, forming Go.

The capacity of the recalculating device 6, which forms the Gperem. Must be at least ..

Register 7 contains five cells. The number K of circuits 8-10 must be equal to 4, since in this example the second and fifth intervals will be equal to each other.

In general, if all the formed intervals are different from one another, then the number of elements of 8–10 matches is equal to the number of register cells 7.

The device works as follows.

The pulses from the output of the generator 1 (Fig. 2, a) are fed to the first inputs of the elements And 2, 4. However, only one of them can be opened. Let at the initial moment the element 2 of the trigger output 3 is opened, the synchronizing impulses arrive at the input of the scaler 5.- A pulse appears at the output of the clock pulse at Fig. 2.6, changing the state trigger trigger 3 control.

The signal from the second output of trigger 3 opens element 4, the pulses of generator 1 are fed to the input of counting device 6. At the same time, the signal from the second output of trigger 3 goes to the clock input of register 7, and a signal is generated at the output of the first cell of register 7 (Fig. 2, e), which is applied to the second input of the first match element 8, thereby preparing it for opening.

The first inputs of the coincidence element 8 are connected to the outputs of the bits of the scaling device 6 in such a way that, through the r pulses arriving at the input of the scaling device, the output of the condominium element 8 generates a pulse that passes through the OR element and sets the scaling device 6 to , in the particular case of the zero state, then this pulse changes the state of trigger 3.

After IT, AND 4 will close, and AND 2 will open and begin to pass the pulses of generator 1 to the input of the untranslated device 5.

Simultaneously, a pulse ends at the output of the first register cell 7 (Fig. 2, e) and a pulse begins to form at the output of the second cell of the register 7 (Fig. 2, e), which prepares the coping element 9 for forming a pulse.

Thus, the first time interval is

Ti mT + ttiT.

In the second cycle, the interval is formed accordingly.

G2 tt + P2T.

Next, the device operates in a similar way and forms intervals Tz, T.

The difference in the operation of the device and the formation of the Gz interval lies in the fact that the signal from the output of the fifth register cell 7 arrives at the second coincidence element 9.

Since the values of Li Ia ... pc are independent of one another and can be chosen by any one in the corresponding range, the device provides the possibility of forming any stepwise law of changing time intervals. The initial setup chains of the device in FIG. 1 conventionally not shown.

Claims (2)

1. Author's certificate No. 420097, M. Kl.2 N OZK 1/18, 197. 2. The author's certificate number 341029, M. .2 G 06F 5/02, 1971 (prototype).