SU675602A2 - Active probabilistic relay - Google Patents

Description

(54) ACTIVE VERCHEYATNOSTNZH RELAY

I

The invention relates to a pulse technique, in particular in devices for filtering continuous and pulsed signals, and can be used to determine the position of a unipolar useful signal distorted by interference relative to a fixed threshold.

According to the main author. sn. No. 605317 is a well-known active relay containing a non-linear integrator with positive and negative feedback elements, a W device, four circuits for re-charging the output of a non-linear integrator capacitor, each of which contains a series-connected key and controlled transistors l.

However, this device does not differ in terms of noise immunity, since it allows the formation of false pulses when the zero threshold is exceeded by noise in time without the information of the single pulse.

The purpose of the invention is to increase the interchickiness.

FOR THIS, an active probabilistic relay, containing a non-linear integrator with electrical and negative feedback and feedback loops, a logic device, and four circuits and an output capacitance of non-integrated integration. torus, each i0 which. : contains ps therefore connected key and controlled field-effect transistors, a DC amplifier, a switch on a field-effect transistor, a detector and a differential amplifier are introduced, the inverting input of the differential amplifier is connected to the output of the DC amplifier, the KOTOt ro input is connected to one bus, and its non-inverter1: a sluggish input to the source voltage busbar, the voltage source into the drain of the key-effect transistor is connected to the corresponding wave of the connection resistor of the DC amplifier, and the field gate transistor key through the detector is connected to the output bus.

FIG. 1 shows the basic electrical diagram of the proposed device; in fig. 2 - graphs that show his work.

The device consists of an input amplifier stage, assembled at UFT1. a switch .Ra of a field-effect transistor 2 and D eistors 3-6, a differential amplifier, made on the DCF 7 and a resistor, tori 8-13, a detector made on the UPT 14, diodes 15 and 16, and resistors 17-19, and an active probabilistic relay 20.

The operation of the device is based on a change in the SRI of the UFT 1 gain depending on the output voltage of the active probabilistic relay. In this case, the state of the INPUT signal E (t), with its increase, is determined with respect to the threshold ttji, and when it decreases with respect to the threshold OL,

In the initial state, when there is no signal at the input of the device, the active. Relay 20 is located in junction - 1 (see Fig. 2, c) due to the tip-to the non-inverting input of the differential TFC 7 of the voltage of the chip 11 Ls / p.- - 0 52il: (fig. 2,6) with a divider on resistors 12 and 13. Field tray-; Zistor 2 is open with zero potential: from the output of the TFC 14 and shunts the resistor 6 of the feedback circuit of the input TFC 1 "I As a result, the gain factor; input amplifier. less than one. In this case, the positive impulse Z (t) arriving at the device input is attenuated by the input UPT 1 in K mi rt-rad (Fig. 2.6) and is fed to the inverting input of the differential UFD 7. The transition of an active probability relay from 1 in the +1 state begins at the moment of equality of the stresses acting on the inputs of the differential DCF 7 (FIG. 2 b, c), i.e. at the moment when the input signal reaches the value (, v

Since the level of the threshold Q-i is higher than the threshold O, 5 “n“ That we’ll reach this threshold for emissions of interference, this threshold will be significantly lower than with a threshold of 0.5 Z ”with the same level of interference at the input. After the active rotary relay switches to the +1 state, the field,;

the transistor 2, as a result of which the gain of the input PMOT 1 increases to a value of 1;

The resistances of the resistors 6 and 4. The output voltage of the UPT 1 increases in jumps and becomes equal to Kmax 2 (t) (Fig. 2, b). Reverse transition active probabilistic relay of state

+1 in the state -1 when the input signal decreases, when the value of the input signal g (t) is equal. Thus, the state of the input signal AND (t), which exceeds the threshold

The components will be determined when it decreases in relation to the second threshold of 0.5 (Fig. 2, a). In this case, the fragmentation of information pulse can occur only with a higher level of interference than

this would occur at a threshold of 0.52n. At the moment when the input signal 2 (t) reaches the threshold Qjj, the active probabilistic relay goes to state -1, the potential is zero from the detector output (UPT 14)

opens the field-effect transistor 2, the circuit comes to its original state.

Thus, with the help of the proposed device, significant

reduction of information impulses with a large level of noise at the input and a decrease in the probability of anomalous emissions due to interference in the pause between information impulses for

same-field input signals.

Forms in the invention

40, Active probabilistic relay auth. St. No 605317, which is due to the fact that, in order to increase the noise immunity, a DC amplifier, a switch on the field-transistor 45 ps detector, and a differential amplifier were introduced, and the inverting input of the differential amplifier was connected to the output of the DC amplifier, whose input connected to the input bus, and

1d its power supply input to the bus is ns "precision voltage reference, source, and. the switch field transistor switch is connected to the corresponding terminals of the feedback amplifier amplifier circuit

55 coil current, and the gate of the field-effect transistor of the key is connected through the detector to the output bus &

t

t