SU1522393A1 - Device for receiving pulses - Google Patents

Abstract

The invention relates to a pulse technique and can be used to receive pulse signals as part of functional modules for various purposes. The goal is to expand the area of use of the device by providing the ability to adapt to the polarity and levels of input signals - achieved by introducing the maximum selection block 1, the minimum selection block 2, the large sum block 3, the polarity indication block 4, the multiplexer 6 and the inverter 7 and the corresponding electrical connections between functional elements. 2 Il.

Description

The invention relates to a pulse technique and can be used to receive pulse Signals as part of functional modules for various purposes, in particular as part of modules of a unified CAMAC system equipment.

The purpose of the invention is to expand the field of application of the device by providing the ability to adapt to the polarity and levels of the input signals.

Figure 1 shows a block diagram of a device for receiving pulses; figure 2 - timing diagrams illustrating his work. .

The device contains a maximum selection unit 1, a minimum selection unit 2, a large summation unit 3, a polarity indication unit 4, a comparator 3, a multiplexer 6 and an inverter 7, the input bus 8 connected to the non-inverting first input 9 of the comparator 3 and to the inputs of block 1 maximum selection and minimum selection unit 2, the outputs of which are connected to the input of the polarity indication unit 4 through the scale 3 summation unit 3 and the second inverting input 10 of the comparator 5, and the output of the polarity indication unit 4 is connected to the control input the multiplexer 6, the first input 12 coupled to an output kompa- Rhatore 5 and through the inverter 7 - to the second input 13 of the multiplexer 6, the output of which is connected to the output line 14.

In the simplest case, the maximum selection unit 1 may be implemented in V1, connected between its input and output of the diode 15 and connected between the output and the potential-free bus (not shown) of the capacitor 16, the minimum selection unit 2 can be performed in a similar way diode 17 and capacitor 18, and diodes 15 and 17 of block 1

(L

WITH

and 2

included in opposite directions. a block 3 of a large-scale summation can be implemented in the form of series-connected resistors 19 and 20, the connected pins of which are the output of block 3, whose inputs are connected to other outputs of resistors 19 and 20; , d con gents 16 and 18 and resistance R (9 20 resistors 19 and 20 satisfy the following conditions:

R, “R

iq

go

R

14

 WITH

18

T

max)

where t

Max

maximum period of the following input signals The device operates as follows.

. The signal from the input bus 8 with the levels and any polarity (Fig. 2a) is fed to the input of the maximum selection unit 1, the output of which forms the upper level of the input signals (Fig. 26) j and also to the input of the minimum selection unit 2, at the output of which their level is formed (figv). The signals from the outputs of blocks 1 and 2 are fed to the inputs of block 3 of large-scale summation, the output of which forms their average value (fig.2g), which is fed to the input of block 4 of polarity indication and to the inverting input 10 of the comparator 5, to the non-inverting input 9 of which Post-hs signal from the input bus 8 (Fig.2A). In this case, the signals ty are formed at the output of the comparator 5. -. for positive input signals, and duration - tj, for negative ones (fig. 2d), input to input 12 of multiplexer 6 directly, and to input 13 - through inverter 7. Logical signal from the output of unit 4 ind; polarity (Fig.2e) is fed to the input of control 11 multiplex

Copy 6 connects its input to input 12 with a positive voltage at the output of block 3 of large-scale sum

five

0

five

0

five

0

five

0

vani and with input 13 - otherwise. At the same time, pulses of the same length (Fig. 2g) as on the input bus 8 are formed on the busbar bus 14, at any polarity and at any levels of input signals (1 || ig.2e), and the drift of the levels of the input signals are accompanied by recharging of capacitors 16 and 18 of selection block 1 and 2 through resistors 19 and 20 of scale 3 summer, the output of which continuously maintains voltage (FIG. 2d), optimal for discriminating input signals (FIG. 2a) in terms of eliminate the effects of interference and interference.

The proposed device provides reception of rectangular pulse signals of any duration and input signal levels while maintaining their duration for any polarity of the signal and automatic stabilization of the noise selection level.

Claims (1)

Invention Formula A device for receiving pulses, containing a comparator, the first input of which is connected to the input bus, is different from the fact that, in order to expand the field of application by providing adaptability to the polarity and the levels of the input signals, a selection unit has been introduced maximum, minimum selection unit, scale aggregation unit, polarity indication unit, multiplexer and inverter, the input bus of the device connected to the inputs of the maximum selection unit and minimum selection unit, which codes through the scale unit ummirovani connected to the second input of the comparator and to the input of the indication unit polarity connected. The code to the control input of the multiplexer, the first input of which is connected to the output of the comparator and through the inverter. to the second input of the multiplexer, the output of which is connected to the output bus of the devices a.