SU1410268A1 - Device for shaping measurement pulses - Google Patents

Abstract

The invention relates to a pulse measurement technique and can be used in the equipment for collecting measuring pulses. The goal is to improve the accuracy of the formation of measuring pulses. The device contains a source of reference voltage 1, a unit 2 of comparison, switches 3, 8, 9, 11 and 13, capacitors 4 and 5, regulating elements 6 and 7, trigger 10, counters 12, 14. The goal is achieved by introducing into the device a trigger, two control elements, a comparison unit, two counters, four switches and two capacitors, as well as corresponding functional connections between them. The operation of the device is illustrated by timing diagrams. 2 Il. WITH

Description

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ten

15

11410268

The invention relates to a pulse measurement technique and can be used in the equipment for collecting measurement pulses.

The aim of the invention is to improve the accuracy of the formation of the measuring pulses. FIG. 1 is a functional diagram of the device; FIG. 2 -; purees that show his work.

The device contains a source of reference voltage 1, the output of which xtepe3 comparison unit 2 is connected to the 11th input of the first switch 3, the output from the capacitors 4 and 5 connected in parallel with it are connected to the inputs of the first and second regulating elements 6 and -7, respectively, whose outputs are connected to The inputs of the third and nth switch I1OB 8 and 9, respectively, trigger 10, the direct output of which is connected to the control input of the first switch 3, the gate input of the second Switch 11, as well as through the first; the third and second switches 8 I 11, the inverse output of the trigger 10 (connected to the gate input of the fourth switch 13 and through the second) 14 to the control inputs of the fifth and fourth switch 1 and 9 and 13, the outputs the third switch 8 is connected to the first group you 20

25

thirty

Sing weekend women. Similarly, in accordance with the code from the output of the second counter 14, the fifth switch 9 is controlled, which alternately and cyclically connects the output of the second regulating element 7 to the second group of output buses C.-. Thus, impulses are sequentially formed at the output buses of the device, and on the output buses of the switch 8 - odd channels, and on the output buses of the switch 9 - even. The initial installation of the device in its initial state is ensured by applying synchronization pulses to the installation inputs of the trigger 10 and the counters 12 and 14 (Fig. 2a). The doubled clock frequency arrives at the counting input of the trigger 10 (Fig. 26), which is switched for each incoming pulse (Fig. 2c). Due to the fact that the inputs of the counters 12 and 14 are connected respectively to the direct and inverse outputs of the trigger 10, the pulses at the output of the switch 8 are shifted by a time equal to half the duration of the generated pulses relative to the pulses generated at the output of the switch 9 (Fig. 2d , d, e, g).

The amplitude of the generated pulses is stabilized as follows.

Pulses from switch outputs

35 busses and corresponding inputs 35 8 and 9 arrive at the inputs of the switch of the second switch 11, the outputs of the fifth switch 9 are connected to the second group of output buses and the corresponding inputs of the fourth communes 11 and 13, respectively, which are polled with them. the inputs of switches 8 and 11, as well as switches 9 and 13

gator 13, the outputs of the second and fourth 40 are connected to the outputs of the counters 12 and

fo switches 11 and 13 are connected to

JBTOpbiM is the input of the comparison unit 2, the pEN input bus 15 is connected to trigger 10, the second input bus | 16 is connected to the installation input 45

dami trigger 10 and first and second

counters 12 and 14.

The device works as follows.

The supply voltage U through the first and second regulating elements 6 and 7 is fed to the inputs of the third and fifth switches 8 and 9, respectively. In accordance with the code arriving at the control inputs 55 of the third switch 8 from the output of the first counter 12, it alternately and cyclically connects the output of the first regulating element 6 to the first group 14, respectively. The signals from the outputs of the switches 11 and 13 are fed to the first input of the comparison unit 2, the second input of which is connected to the source of the reference voltage 1. The switches 11 and 13 open alternately, since their gate inputs are connected respectively to the direct and inverse outputs of the trigger 10. Thus, on the comparison unit 2, the differential signal for all generated pulses is sequentially generated, which through the switch 3 is fed alternately to the control inputs of the regulating elements 6 and 7. The control of the switch 3 is performed signal are output from the forward flip-flop U so that when the switch 11 is open, the output of comparator unit

0

five

0

five

0

Sing weekend women. Similarly, in accordance with the code received from the output of the second counter 14, the fifth switch 9 is controlled, which alternately and cyclically connects the output of the second regulating element 7 to the second group of output buses C. - i. Thus, pulses are sequentially generated on the output buses of the device, and on the output buses of the switch 8 are odd channels, and on the output buses of the switch 9 are even. The initial installation of the device in its initial state is ensured by applying synchronization pulses to the installation inputs of the trigger 10 and the counters 12 and 14 (Fig. 2a). The doubled clock frequency arrives at the counting input of the trigger 10 (Fig. 26), which is switched for each incoming pulse (Fig. 2c). Due to the fact that the inputs of the counters 12 and 14 are connected respectively to the direct and inverse outputs of the trigger 10, the pulses at the output of the switch 8 are shifted by a time equal to half the duration of the generated pulses relative to the pulses generated at the output of the switch 9 (Fig. 2d, d, e, g).

The amplitude of the generated pulses is stabilized as follows.

Pulses from switch outputs

8 and 9 arrive at the inputs of the switch

Ditch 11 and 13 respectively, which are polled with them, since the control inputs of switches 8 and 11, as well as switches 9 and 13

14 respectively. The signals from the outputs of the switches 11 and 13 are fed to the first input of the comparison unit 2, the second input of which is connected to the source of the reference voltage 1. The switches 11 and 13 open alternately, since their gate inputs are connected respectively to the direct and inverse outputs of the trigger 10. Thus, on the comparison unit 2, the differential signal for all generated pulses is sequentially generated, which through the switch 3 is fed alternately to the control inputs of the regulating elements 6 and 7. The control of the switch 3 is performed signal are output from the forward flip-flop U so that when the switch 11 is open, the output of comparator unit

2 through the switch 3 is connected to the control input of the regulating element 6, and when the switch 13 is open, to the control input of the regulating element 7. If the amplitude of the pulses on any output bus differs from the required output, which is determined by the output voltage the reference voltage source 1, the signal at the output of the comparator unit 2 through the switch 3 acts on the control input of the regulating element 6 or 7 so as to compensate for this difference. Since the control voltage to the control inputs of the regulating elements 6 and 7 is supplied alternately, capacitors 4 and 5 connected in parallel to the control inputs of the regulating elements 6 and 7, respectively, are used to memorize this voltage in the pauses of the control pulses.

Claims (1)

Invention Formula A device for forming measuring pulses, containing a source of reference voltage, a first switch, characterized in that, in order to increase the accuracy of forming measuring pulses, a trigger is introduced into it, the first and second regulating elements, a unit 4102684 the first and second counters, the second, third, fourth and fifth switches and two capacitors, with the first input pin connected to the trigger input, the direct output of which is connected to the input of the first counter, the control input of the first switch and the gate input of the second 10 of the switch, the inputs of which are connected to the first Group of output tires by the turns of the third switch, the input of which is connected to the output of the first regulator of the element, the inverse travel trigger connected to the input of the second counter and the gate of the fourth switch whose inputs are connected to the second group of output buses and the outputs of the fifth switch, the input of which is connected to the output of the second regulating element, the outputs of the second and fourth switches are connected to the first input of the comparison unit, the second input of which connects not 25 with the output of the reference voltage source, and the output through the first switch is connected to the control inputs of the first and second control elements, in parallel of which are included , the first and second capacitors, respectively; the second input bus is connected to the installation inputs of the trigger and both counters, and the inputs of the regulating elements are connected to the bus voltage. 20 ABOUT and ppppppp pppppg., FIG. 2