SU1277366A1 - Generator of time intervals - Google Patents

Abstract

The invention can be used in devices and automation and computing. The aim of the invention is to expand the functionality. To achieve the goal, the SHS 6 element is introduced into the time interval shaper. The time slot forwarder also contains 1 pulse shaper, 2 pulse generators, 5 pulses, frequency dividers 3, 7 keys, 4, 8 This shaper allows the duration of the interval to be controlled by its digital code , and also to control the duration of the formed time interval within the period of the generator 5 by changing the division factor of only divider 3 frequencies at a constant division factor, divider 7 frequencies, 2 Il. (L

Description

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The invention relates to a pulse technique and can be used in automation devices and computing devices. The purpose of the invention is to expand the functional capabilities of the device by allowing the duration of the interval to be controlled by its digital code. FIG. 1 is a functional diagram of a time interval shaper; Fig. 2 shows a pulse generator circuit. Shaper of time intervals, serially connected serially connected shaper 1 impulses, first generator 2 pulses, first divider 3 frequencies, first key 4, second generator 5 pulses, and also item .Sh 6, second frequency divider 7, second key 8, Second inputs key 4 and the element OR 6 are connected to the output of the generator 2, the reset input of which is connected to the output of the key 4 and the reset input of the generator 5 is connected to the output of the key 8, the second input of which is connected to the output of the generator 5 The device operates as follows. The triggering signal through driver 1 triggers generator 2, this corresponds to the beginning of the interval being formed. Generator 2 generates a series of pulses with a period T, and a pulse, the division factor of divider 3, depending on the division factor of divider 3, the first part of the time interval is determined. When a pulse 4 appears at the input of the key 4 from the output of the divider 3, a single pulse is selected from the generator 2 sequence, and at the output of the key 4, a pulse appears on the front of which the generator 5 is started, and the generator 2 controlled by input Reset, Since the termination of the generator 2 generation will occur at the time of time, corresponding to the falling edge at the output of the key 4, regardless of the time, delays in the depot 3 and the key 4 at the output of the generator 2 and the key 4 that ensures proper operation of the device. 6 Serial vHMnynbcoB generator 5 with a period and number of pulses equal to the division factor of divider 7 at the time of starting generator 5 is fed to the input of the element OR 6 and then to the input of the frequency divider 7. When a pulse 8 is output from the output of the divider 7, a pulse is selected from the generator 5 sequence, and at the output of the key 8, a pulse is generated, the front of which results in the formation of the required time interval, and the generator 5 and 5 are stopped. external-trigger pulses (FIG. 2), controlled by the Reset input by the falling edge of the pulse, work as follows. The triggering pulse arrives at the input of the recirculation generator, built on the logical elements SHS-HE 9 and 10, s, the delay elements in the feedback circuit, and the generation of a sequence of pulses begins in it. The triggering impulse switches the BS-trigger on the W-HEN-12 and 13 elements to the logical state O at the output of the element OR: -NE 12, which allows the generation of a recirculation generator. When the impulse is inputted to the input, the elements 14 and 15 are formed on its trailing edge by a pulse that switches the RS trigger to the logical 1 state at the output of component STI-HE 12, which stops the generation of the recirculation generator. The next impulse at the start input will resume generation, and on the falling edge of a 1-pulse at the input Reset, generation will be disrupted. The value of the time interval formed by the device will be, g, + (pn,) -;:. ,, where p, 5 p are the division factors of the dividers 3 and 7, respectively; (11 (2 periods of generators 2 and 5, respectively. We set / π, 4 + & t, where L is the discreteness of interval formation. We get, (t ,, + ut) + (nn,). (1 Thus, from the formula ( 1) in -1Don, | that during the period of the generator

greater than generator 5, an integer number of periods of generator 5 is set as the division factor of divider 7 and is placed on the interval being formed. The number of discrete interval formations hs, which must be added to the integer number of periods of the generator 5 to obtain the required interval, is set as the division factor of divider 3.

Claims (1)

Invention Formula Shaper time intervals containing serially connected pulse shaper, the first pulse generator, the first -I pg I-I the frequency divider, the first key and the second pulse generator, as well as the second frequency divider, the output of which is connected to one of the inputs of the second key, the other input of which is connected to the output of the second pulse generator, and the second input of the first key is connected to the output of the first pulse generator, differing in that, in order to expand the functionality, an OR element is introduced into it, the inputs of which are connected to the outputs of the pulse generator, and the output is connected to the input of the second frequency divider, while the reset inputs of the first and volts cerned pulse generators are connected respectively to the outputs of the first and second keys. output FIA.G