SU643808A1 - Arrangement for automatic shifting of pulses - Google Patents

Description

(54) IMPULSE AUTOSDBIGA DEVICE

. -;., The invention relates to a measuring technique and can be implemented in converters of guarantors of periodic electric signals into a digital code. ; A device is known as an autolith and a bit OB, which contains a synchronized generator of pulses with a period greater than the fl conversion time. The disadvantage of this device is the large step of the auto-shift. The closest to the previous Invention to the technical essence and the achieved result is an automatic pulse shifter, which provides a source of sync pulses, a source of current, a time interval former, a digital integrator, an electronic key, a capacitor, and a null-organ. errors of the autoshift pitch, the device of the auto-shift of the infrared pulses, the source of the snnhroil pulses, the first output of which is connected to the input of the digital integrator, the second output - to the input of the intervalizer The first key, the input of the co-driver, is connected to the source of a constant current, and the output is connected to the first input of the nullorgan and the first output of the capacitor, the second output of which is connected to the housing, is equipped with a second key and trigger, and its first input sync impulse, the second input with the output of the null organ, and the output with the control input of the key, the output connected to the output of the second key, the input connected) to the output of the digital input | , and the UbMUSM input - to the output of the time interval generator, with the second input of the null organ connected to the housing. The drawing shows a structural apektrchesche scheme of the device. The device is built from a source 1 of clock pulses, a generator of 2 time intervals of a source of 3 DC, and a digital integrator 4, the first and second keys 5 and 6, a capacitor 7, a zero-organ 8 and a trigger 9,

Device size: not following sample.

The output pulses of the source 1 of the clock pulses are fed to the inputs of the generator 2. time intervals, UHtJpOBOHO integrator 4 and trigger 9 .. Each clock pulse increases the output current of the integrator 4 by the value of d. at the output of ui4 eow integrator is equal;

;. ;;; ,

The shaper 2 at the time of time, preceding the appearance of the I-th clock pulse, finishes the formation of a pulse of duration T, Key 6 closes for a time T0 and condenser 7 is charged with current 1. Key 5 is in the open state. By the end of the interval T, the voltage on the capacitor 7 reaches the values equal to

U1-D1-That

and

with

ep

Nsch sync pulse

trigger 9, which closes key 5, and

capacitor discharge starts at 7 m.

IP from source 3 constant foka.

The moment of discharge is fixed by the yui-grgan S, which returns the trigger 9.c

initial state. The discharge time of the condator is

n-ui then

+ t

V

05

where 103 is the delay of the nullorgan actuation. Upon receipt of the next (P + 1) -TH Syshfoumulsa time razrz dv capacitor is equal to

) d1-then

041 "

Due to the fact that null1 o | 6g av, smacks at one and the same time with respect to the common bus, the delays of the zero-body actuation are constant in magnitude and the auto-shift step is

T T - MLO VV 1

At

And it does not depend on the size of the capacitor capacitance, nor on the delays in the operation of the null organ.

The calibration of the autoshift can be penetrated by monitoring the values of D1, Ifj TQ, which provides a total conversion error of no worse than 0.3%,

. The device allows to measure the duration of short intervals (less than 10 C) with an accuracy of 0.5-1%.

Claims (2)

1. Technical description oscillogram phage z1 / R1100 of firm Tyon opgch (USA), 1970. 2. P. Bi. Y. A, Stroboscopic Oscillography, M., Soviet Radio, 1972, p. 108-132. .