SU1283956A1 - Pulse repetition frequency disciminator - Google Patents

Abstract

The invention can be used in frequency analyzers barely. impulses for signaling the angular velocity values of the rotational elements equipped with impulse sensors. The purpose of the invention is to increase the information content and speed of the device. The discriminator contains a driver 1 pulses, a counter 2 pulses, a decoder 3, triggers 4, and 5 and a generator of 6 pulses. Introduction of the frequency divider 7, the I-W 8 element, the inverter 9, the control bus 10 and 13, and the output, respectively, makes it possible to obtain a relay character at one output relative to the second, which expands the functionality of the device. 1 il. c (b (L

Description

3

ND

00 WITH

with

O1

Od

The invention relates to automation and pulse technology and can be used in signaling devices of the following impulse frequency, for signaling the values of the angular velocity of the elements of rotation, equipped with pulse sensors,

The purpose of the invention is to increase the information content while simultaneously prompting the speed of the device.

The drawing shows a structural electrical circuit device,

The device contains a pulse shaper 1, the output of which is connected to the R input of the pulse counter 2, the outputs of which are bitwise connected to the inputs of the decoder 3, the first and second outputs of which are connected respectively to the first trigger 4 and the D input second trigger 5, except TOGO; the output of the pulse generator 6 is connected to the input of a frequency divider 7, the first and second outputs of which are connected respectively to the first inputs of the first and second groups of inputs of the I-1-11SH element 8, the second inputs of the first and second groups of inputs which are connected respectively to the inverter code 9 and bus 10 ufazleniya, the input of the imager 1 is connected to the input bus 11, and the outputs of the first to the second flip-flops 4 and 5 are connected respectively with the first and rtoroy: - L: with pin pins 12 and 13 of the WATER 1 connected with the trigger 5, S- input i pa 4 is connected to the terminal C which is also RUD ;; 11: and inverter 9, trans. T; 1st and in: decoder 3 are connected by inputs of the second and first groups, respectively, of the element input. AND-OR 8, the output of which is connected to C - at the head of the counter 2 pulses,

The device works as follows.

When observing the angular velocity of the elements of rotation, for example, the engine of the transnational tape mechanism, equipped with an ultrasonic speed sensor, it is not necessary to determine the moment of dialing, frequency, rotational speed, preservation and reduction thereof; No preset level, stop. Moreover, it is known in advance that I must comply. There is a process of enlarging and saving or tempering, Exit Form. C-ihody. Vtorog the first trigger- K. Ieni

.; About the entrance of the 13th round trip

., gregimi

0

five

0

or logical 1 respectively present on the control bus 10. Logic O keeps trigger 4 in the state corresponding to logic 1 on bus 12, prohibits the passage of pulses from divider 7 through the second group of inputs of the AND-OR 8 element to counter 2, and sets logical 1 at the output of HHBepiTopa 9, which allows the pulses to pass through the first group inputs of element 8 AND-OR. When the counter 2 is filled to a predetermined value, at the second output of the decoder 3, Form1 has a logical O that blocks the first inputs of the AND-OR element 8, the counter 2 and the decoder 3 remain in this state until the pulse arrives from the former 1. The first impulse c the driver 1 sets the state of the first output of the decoder 3 to the trigger 5, sets the counter 2 to the zero state, and the counter 2 starts counting the new time interval. If the period of the studied frequency is more than the time of filling the counter, the output of the trigger 5 forms a logical O, if less. above - logical 1, Thus, when a given frequency is reached and stored on bus 13, logical 1, and when decreasing, logical O.

Logic G on control bus 10 unlocks trigger 4 and allows 5K pass through the AND-OR element to 8 pulses arriving at its B1 primary group of inputs. The period of the pulses of the frequency under study will become longer than the time of filling the counter 2 until the moment when the first output of the decoder 3 forms a logical O, which blocks the second group of inputs of the AND-OR element 8 and changes the state of the trigger 4. By

marks the moment of decreasing the frequency below the specified limit.

The first group of inputs of the element AND-OR 8 receives impulses from the divider 7 of a higher frequency than the second group of inputs, as a result, the pattern of formation of the signal on bus 13 with respect to w-1 and 12 and vice versa is a relay characteristic.

The use of the device in automatic control systems, for example, tracking the rotational speed of the engine, allows you to receive, with a predetermined accuracy, a signal that there is an instantaneous frequency deviation from the setpoint and the state of the object of study: rotation or stop, which increases the information content of the system.

Claims (1)

Invention Formula The discriminator of the pulse frequency containing the pulse shaper, whose input is connected to the discriminator input bus, and the output to the R input of the pulse counter, whose outputs are bitwise connected to the inputs of the decoder, the first output of which is connected to the R input of the first trigger, output which is connected to the discriminator's first output bus, as well as a second trigger and a pulse generator, characterized in that 2839564 to increase the information content while simultaneously performing speed, a control bus, a second output bus, an inverter, a frequency divider and an AND-OR element are entered into it, the first inputs of the first and second groups of inputs of which are connected to the first and second outputs of the frequency divider, the second inputs the first and second 0 groups of inputs, respectively, with the output of the inverter and the control bus, the third inputs of the first and second groups of inputs, respectively, with the second and first outputs of the decoder and the output of the I-IPI element with the C input of the pulse in, wherein the input of frequency divider coupled to an output of the pulse generator, S-Gross carrying entrance. the trigger is connected to the control bus, the C and D inputs of the second trigger are connected respectively to the pulse driver output and the second depressor output, the second trigger output is connected to the second output bus, and the inverter input is connected to the control bus. f5 20 25