Impulse selector

FIELD: impulse engineering, possible use in impulse analyzing devices to select impulses with given parameters of duration, amplitude and period.

SUBSTANCE: device contains differentiating element, zero level limiter, inverter, three delay blocks, key, adder, multi-level amplitude selector, commutator, trigger, saw-shaped voltage generator, AND element, subtracting device.

EFFECT: expanded functional capabilities of device due to selection of both periodic impulses with given duration and amplitude parameters, and impulses appearing in random time moments.

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The proposed selector refers to the pulse technique and can be used in devices analysis for extracting pulses with specified parameters in duration, repetition period and amplitude.

Known selectors pulses, based on their timing and amplitude (see, for example, U.S. patent No. 3922676, inventors ' certificatesâ„–â„–894851, 1239852, 1396268, 1624676, patent No. 2173935 and others), as well as the selectors described in the 2nd and 3rd chapters of the book Antimachia, Vcctc "Selectors pulses", ed. The owls. Radio, Moscow, 1966

Known selectors closest to the proposed selector is in patent No. 1624676 on M CL NC 5/26 priority from 17.10.88 g, which is chosen as the prototype.

This selector allows discriminates only regular pulse sequence by three parameters, namely amplitude, pulse duration and repetition period.

However, this device is difficult and does not allow to separate periodic pulses with specified parameters in the duration and amplitude of pulses with the same parameters on the duration and amplitude, but appear at random points in time.

Object of the invention is the simplification of the selector pulses and the expansion of its functionality associated with the possibility of selection as a periodic pulse with a given the th amplitude and duration, and appearing at random points in time.

The problem is solved in that the selector pulses containing a differentiating element, an input connected to the input bus selector and through the third element time delay with a key element whose output is the first output bus selector, the output of the differentiating element through a limiter on the zero level is connected to the input of the inverter and connected in series adder and multilevel amplitude selector switch, the output of which is directly connected to the first input of the trigger and through the second element time delay is connected to a second input of the trigger, and the trigger output is connected with the control input of a key element, as well as the sawtooth generator and the first element time delay introduced new elements and relationships, namely the output of the differentiating element is connected to the input of the sawtooth generator, and its output connected to the second input of the adder, to the first input of which is connected to the output of the inverter, the output multi-level amplitude selector is connected to the input of the switch element And the first input of which is directly, and the second through the first element time delay is connected to the first output bus selector, the output element And the second output is the second bus selector, and subtractive device, the first and second inputs which are connected respectively with the first and second output tyre selector, and the output of subtractive device is the third output bus selector.

A structural scheme selector is presented in figure 1, and timing diagrams explaining the principle of its operation is shown in figure 2.

The selector pulses contains a differentiating element 1, an input connected to the input bus selector and through the third element time delay of 10 with a key element 11 whose output is the first output bus selector. The output of the differentiating element 1 is connected to the input of the sawtooth generator 4 and connected in series through the limiter zero 2 and the inverter 3 is connected to the first input of the adder 5, a second input connected to the output of the sawtooth generator 4. The output of the adder 5 via a serially connected multi-level amplitude selector 6 and the switch 7 is connected to the first input of the trigger 9 and through the second element time delay 8 is connected to a second input of the trigger, and the trigger output is connected with the control input of the core element 11, the output of which is directly connected to the first input element And 13 and through the first element time delay 12 with the second input is lament And the output element, And 13 is a second output bus selector, and subtractive device 14, the first and second inputs which are connected respectively with the first and second output tyre selector, and the output of subtractive device is the third output bus selector.

The proposed selector works as follows. Input pulse sequence (figure 2,a), which along with other pulses are both periodic and random pulses with specified parameters in the duration and amplitude (Fig. they are colored different shades) with the input bus is fed to a differentiating element 1, the output of which appear positive and negative pulses corresponding to the front and rear fronts of the input pulses and equal to their amplitudes (2,b). The pulses from the output of the differentiating element 1 is fed to the sawtooth generator 4, starting his pulse of positive polarity and tearing of the oscillation pulse of negative polarity (figure 2). The amplitude of the voltage pulses at the output of the sawtooth generator, uniquely associated with the duration of the input pulses, is applied to a second input of the adder 5. The pulses from the output of the differentiating element 1 is fed to the limiter zero level 2, which is the upper limit, then estourado pulses of positive polarity (figure 2, g), and the negative pulses are input to the inverter 3, which converts these pulses into pulses of positive polarity (figure 2,d). The pulses of positive polarity, which contain information about the amplitude of the input pulses from the output of the inverter 3 are served at the first input of the adder 5, where the addition with pulse sawtooth shape. At the output of the adder 5 appears pulses (figure 2,e), which provide information about the amplitudes and durations of the input sequence. From the output of the adder 5 pulses at multi-level amplitude selector 6, where depending on the total amplitude of the input pulses are divided by level (figure 2,g). Each channel of the multi-level amplitude selector 6 transmits on its output pulse only when the amplitude of the total voltage U lies in some interval Umin<U<Umaxcharacterizing this level (channel). Switch 7 allows you to connect to the first input of the trigger 9 any channel multilevel amplitude selector 6. When power is applied, for example, at the k th level (figure 2,g) multilevel amplitude selector 6 these pulses arrive at the switch 7 (figure 2,C) and with its output directly served at the first input of the trigger 9, the cutting edge of setting it in one state. In olivae the state of the trigger 9 is set by the pulses from the output of the switch 7, detainees second element time delay 8 for a time equal to the specified pulse duration tand2,and). At the output of the trigger 9 appears pulses (2,K)corresponding to the pulses of a given duration tand. The pulses from the output of the trigger 9 is received on the control input is a key element 11, the other input of which is fed an input sequence of pulses, delayed third element time delay 10 at a time equal to the specified duration tand(2,l). The key element 11, which is the first output bus selector will pass only pulses with predetermined duration tandand amplitude Uand. (2,m). Among these pulses are both periodic pulses, and the pulses appearing at random points in time. The pulses from the output core element 11 directly served at the first input element And 13 and through the first element time delay 12, in which the delay of pulses per time equal to the repetition period Tandserved on the second input element And 13. The output element, And 13 is a second output bus selector, which selects only periodic pulses with a predetermined repetition period. Subtractive device 14, the first and second inputs which are connected respectively with the first and second output W is our selector, allows you to allocate at its output, a third output bus selector pulses with predetermined duration tandand amplitude Uand(2,p), but appear at random points in time.

Thus, the use of the proposed new selector elements and relationships allows to extend the functionality of the selector for selection of a sequence of pulses as a periodic pulse with the given parameters on the duration and amplitude, and pulse with the given parameters on the duration and amplitude, but appear at random points in time. In addition, the proposed selector is simplified since there are no such complex elements as the decoder and the second multilevel amplitude selector.

The selector pulses containing a differentiating element, an input connected to the input bus selector and through the third element time delay with a key element whose output is the first output bus selector, the output of the differentiating element through a limiter on the zero level is connected to the input of the inverter and connected in series adder and multilevel amplitude selector switch, the output of which is connected to the S-input of the trigger and through the second element time delay is connected to the R input of the trigger, the trigger output is connected with the control input of a key element, as well as the sawtooth generator and the first element time delay, characterized in that it introduced the item And subtractive device, the input of the sawtooth generator is connected to the output of the differentiating element, and its output is connected to the second input of the adder, to the first input of which is connected to the output of the inverter, the outputs of the multi-level amplitude selector connected to inputs of the switch, the first input element And directly, and the second input element And through the first element time delay is connected to the first output bus selector, which is formed by a sequence of pulses with predetermined duration and amplitude, the output element And the second output bus selector, on which are formed a periodic pulse with a predetermined duration and amplitude, the first and second inputs subtractive devices connected respectively with the first and second output tyre selector, and the output of subtractive device is the third output bus selector, which pulses with a given duration and amplitude appearing at random points in time.



 

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Impulse selector // 2309532

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