SU1322246A1 - Timer - Google Patents

Abstract

The invention relates to automation and computing and can be used in control computing systems. A distinctive feature of the timer is that the timer, in addition to the functions of counting the time interval, provides the possibility of forming a continuous sequence of pulses with the possibility of adjusting their duration and follow-up period. The aim of the invention is to expand the functional capabilities by ensuring the formation of a continuous sequence of pulses with variable duration and period. This goal is achieved by introducing a single vibrator 17, an element OR 20, an element NOT 18, a counting trigger 19, a switch 14. 2 Il. (L C 00 ND Yu N) 4; sb 05 FIG. 1 iff Hi

Description

13

The invention relates to computer science and computing technology and can be used in control computing systems.

The purpose of the invention is to expand the functionality by providing a form of continuous pulsing of variable duration and period.

FIG. 1 is a block diagram of a timer; FIG. 2 is a functional diagram of a counting pulse former.

The timer contains the counter 1, group 2 information outputs, the element AND-NOT 3, the element NOT:, output 5 of the response signal, input 6 external external signal, input 7 resolution ;; e} I1; h with the commands, group 8 information INPUTS; register 9, input 10 for recording data, shaper 11 for rewriting signal., output 12 for interrupting; register (3, switch lA shaper 15 counting pulse, multiplex lexor 16, one-shot 1 /, element NOT 18, counting trigger 19; element OR 205 input 21 permitting reading output 22 of a pulse series clock generator 23

Forsh-1rovatel 15 sietngo pulse contains the eleme-ggy AND-NOT 24 - 26, one-shot 27.

The timer works as follows.

PeHJiM 1 „Timer running E re; kimee counting time interval ;. The diffraction value of the specified time interval: recording from a group of 8 information inputs of the timer under control of the signal, post-10-ay on resolution 10 per g; isi ggannyh in the register 9.

Information on the inputs of counter 1 and comes from either the first or the second group of outputs of the register 9 times a switch 1A, depending on the state of the counting trigger 1-J, the counter 1 operates in the relay subtraction:. РГмггсусы from the clock generator 23 or from the input 6 of the external clock signal; through the multiplexer (b) the counting pulse shaper arrives 15. A counting pulse is generated for the count-G-p-i-ka on the falling front of each pulse. counting the specified time interval at the output of the overflow-1in of the Counter 1 appears impulse; that goes to the output, 1 2 interrupt, - L11-ti

6, 2

-Timer and through the element number 18 on the counting input of the trigger 19.

The exit state of trigger 19 is changed. The time interval information is returned to the inputs.

counter 1. This information is rewritten into counter 1 by the pulse from the overflow output of counter 1. The cycle is repeated.

Mode 11, If it is necessary to obtain a continuous pulse sequence with adjustable pulse duration and follow-up period, digital values are entered into register 9

pulse time and pause. Depending on the output state of the counting Tpiirrepa 19 in the counting number: 1, F: O with Ha4ajia will be either the value of the pulse time or the value of the pause. If on

when trigger output 19 is turned on, a high level is set, eg: to: (logical unit level), then to counter 1, input 10 is enabled. nn data records recorded digital value of pulse time with

Counter 1 is in subtraction mode. Counting pulses are fed to the secondary input of the counter 1 after counting the pulse duration. At the exit

counter overflow occurs

pulses, which reaches the output 12 of the interrupted timer and NOT 18 at the counting input of the trigger 19. The state of the forward output of the trigger 19 changes At the inverse output of the trigger 19, the logic level H is set and the digital value through the charger 14 enters on information inputs

meter 1 from register 9, This information is rewritten into counter 1 from output 12 of the interrupt, Repeat Cycle Gp) and the presence of a pulse at the input 21 of the read resolution or pulse counts up from the output 12 of the interrupt j of a 1-1 mm pulse multihexor 16, shaper 15 of counts O pulse waits for the termination and shul- c: i at input 21, after which it forms a C-hell impulse of changing state-) n- {e of counter 1,

When a signal arrives at the I-DS-21 resolution-reading during im jjca at the output of the imaging unit 15 of the counting pulse, the AND-NE unit 3 blocks the signal at the output 5 of the release signal until the counting pulse ends. 3132

sa The signal at output 5 indicates the presence of reliable information at the outputs of counter 1.

Thus, the timer operates in the timer mode as well as in the continuous pulse pulse sequence mode with an adjustable digital code, pulse duration and follow-up period,

Formula

and

acquisitions

A timer containing a clock generator, two registers, a rewriter shaper, a counter, an NAND element, a multiplexer, a counting pulse shaper, the first element is NOT, the clock generator output is connected to the first information input of the multiplexer, the second information input the timer signal, the group of outputs of the first register is connected to the group of control inputs of the multiplexer; the input of the recording resolution of the first register is the input of the recording permission of the timer commands, the group of information inputs of the timer is connected to the groups of information inputs of the first and second registers, the enable input of the timer data recording is connected to the enable input of the second register and the first input of the overwrite signal generator, the output of which is connected to the write enable input of the counter, the counting input of which is connected to the output of the counting pulse generator and with the first input of the PI-HE element, the second input of which is connected to the output of the first element NOT, the output

2

25

64

the multiplexer is connected to the first input of the counting pulse generator, the counter overflow output is the timer interrupt output, the counter information output group is the timer information output group, and the output of the NAND element is the output of the timer response signal.

characterized in

that, in order to extend the functionality by ensuring the formation of a continuous sequence of pulses with variable duration and period, a one-shot, element OR, second element NOT, countable trigger, switch are inserted into the timer, the first and second groups of outputs of the second register are connected respectively to the first and the second groups of information inputs of the switch, the group of outputs of which is connected to the group of information inputs of the counter, the overflow output of which is connected to the second input of the form The overwrite signal gate with the one-shot input and the second element input is NOT, the output of which is connected to the counting input of the counting trigger, the inverse output of which is connected to the first control input of the switch, the second control input of which is connected to the forward output of the counting trigger and is output a pulse timer sequence, the one-shot output is connected to the first input of the OR element, the second input of which is the timer enable input, the output of the OR element is connected to the input of the first element NOT and with the second input of the counting pulse former.

26

27

Phie.g

Claims (1)

Claim A timer containing a clock generator, two registers, a rewriter of the rewriting signal, a counter, an NAND element, a multiplexer, a counting pulse shaper, a first NOT element, the output of the clock generator being connected to the first information input of the multiplexer, the second in multiplexer connected to the first input of the counting shaper pulse, the counter overflow output is a timer interrupt output, the counter information output group is a timer information output group, the output of the AND-NOT element is the output ohm of the timer response signal, characterized in that, in order to expand the functionality by ensuring the formation of a continuous sequence of pulses with variable duration and period, a one-shot oscillator, an OR element, a second NOT element, a counting trigger, a switch are introduced into the timer, the first and second groups the outputs of the second register are connected respectively to the first and second groups of information inputs, the formation input of which is the input of an external clock signal of the timer, the group of outputs of the first reg the country is connected to the control inputs group of the multiplexer, the first register write enable input is a timer command write enable input, the timer information input group is connected to the first and second register information input groups, the timer data write enable input is connected to the second register write enable input and the first input shaper of the rewrite signal, the output of which is connected to the input of the recording permission of the counter, the counting input of which is connected to the output of the shaper of the counting pulse and with the first input of the INE element, the second input of which is connected to the output of the first element NOT, the output of the switch, the group of outputs of which is connected to the group of information inputs of the counter, the overflow output of which is connected to the second input 25 of the overwrite signal generator, with the input of the one-shot and with the input of the second element NOT, the output of which is connected to the counting input of the counting trigger, the inverse output of which 30 is connected to the first control input of the switch, the second control input of which is connected to the direct output of the counting trigger Igger is the output of a timer pulse sequence, the output of a single vibrator is connected to the first input of the OR element, the second input of which is an enable input for reading the timer, the output of the OR element is connected to the input of the first element NOT and to the second input of the counting pulse shaper.