SU1265983A1 - Pulse discriminator with respect to repetition frequency - Google Patents

Abstract

The invention can be used in separation devices in communication channels over a time interval between pulses. The purpose of the invention is to improve the accuracy of selection of a sequence of pulses. The device contains elements 1 and 2 and trigger 5. To achieve this goal, a synchronized generator 6 delayed rectangular pulses are introduced, performed on integrator 9, threshold element 10 and key 11, and shaper 7 reset pulses with the formation of new connections between the elements of the device. 2 Il. (O yu 05 JV O 00 05

Description

The invention relates to a pulse technique and can be used in separation devices in communication channels over a time interval between pulses.

The purpose of the invention is to improve the accuracy of selection of a sequence of pulses.

FIG. 1 shows the structural electrical circuit of the device; in fig. 2 - diagrams for the operation of the device.

The device contains the first 1 and second 2 elements And, the first inputs of which are combined, and the outputs are connected respectively to the first 3 and second 4 output buses of the device, trigger 5, the direct and inverse outputs of which are connected to the second inputs of the first 1 and second 2, respectively, synchronized generator 6 delayed rectangular pulses and shaper 7 reset pulses, the input of which is connected to the input bus 8 of the device and with the combined inputs of the first 1 and second 2 elements And, and the output with the first input of the trigger 5 and the input Synchronization clock of the generator 6 of delayed rectangular pulses, the output of which is connected to the second input of the trigger 5.

The generator 6 is made on the integrator 9, the threshold element 10 key 11.

The device works as follows.

When the supply voltage and the reference voltage ECP are turned on, the output of the integrator 9 begins to form a sawtooth voltage, which enters the input of the threshold element 10, where it is compared with the threshold voltage.

The input positive pulses (Fig. 2a) arrive at the combined first inputs of the And 1 and 2 elements and pass to the output bus 3 or 4, depending on the state of the trigger 5 by the time the pulse arrives. At the same time, the input pulses pass a shaper 7 pulse pulses, generating short negative pulses along the trailing edge of the input pulse (Fig. 26). The impulses of the driver 7 at the control input of the key 11 are forcibly synchronized the generator 6 by discharging the integrator 9 through the key 11 (Fig. 2c) and the first input sets the trigger 5 to the state "1 (Fig. 2e), allowing the input pulses to pass through the element And 1 to the output bus 3.

After the integrator 9 has been zeroed, a sawtooth voltage is again formed at its output. When it reaches a certain value, the threshold element 10 generates a short negative pulse (Fig. 2d), which synchronizes generator 6 and switches trigger 2 to the second input, allowing the passage of input pulses through the AND 2 element to the output bar 4. After passing

the pulse through the element AND 2 by the pulse of the generator 7 is synchronized by the generator 6, and the trigger 5 switches to the state "1, allowing the passage of the next input pulse through the element AND 1.

yy

if the interval between the input pulses is less than the autogeneration period (Fig. 2, intervals t | -12; 14-ts), the input pulses pass to the output bus 3 (Fig. 2e). If the interval between the input pulses is longer than the autogeneration period (Fig. 2, intervals t2-1z; ta-14), the input pulses pass to the output bus 4 (Fig. 2g).

The proposed pulse selector with respect to the following frequency provides an increase in the accuracy of selection of both a periodic and aperiodic pulse sequence over a time interval.

Claims (1)

Invention Formula Pulse selector with respect to the following frequency, containing the first and second elements I, the first inputs of which are combined, and the outputs are connected respectively to the first and second output buses the device, the trigger, the direct and inverse outputs of which are connected to the second inputs of the first and second elements AND, respectively, characterized in that, in order to improve the accuracy of the selection of a sequence of pulses, synchronized delayed rectangular pulse generator and reset pulse shaper, the input of which is connected to the input bus of the device and the combined inputs of the first and second elements I, and the output to the first trigger input and synchronization input of the synchronized generator of delayed rectangular pulses whose output is connected to the second trigger input. e ti one tu ts 3 U2.2