SU1015493A1 - Multichannel selector - Google Patents

Description

The invention relates to a pulse technique and can be used in pulse devices for the separation of periodic sequences of pulses. The multichannel pulse selector is known, the frequency divider contents, the multi-section delay line and the output element I in each channel. The disadvantage of this device is its unsuitability for the separation of pulse sequences by the repetition period, since the selection parameter is not the repetition period of the pulses but their temporal position relative to the reference pulse. The closest to the present invention is a selector device containing a synchronizer and f selection channels, each of which consists of a threshold limiter and serially connected delay elements, an amplitude pulse generator, a range distance generator and a resolution of the element I, a pulse selector over the period. The second input of the AND element is connected to the input of the threshold limiter, and the input of the delay element is connected to the output of the synchronizer 2. A disadvantage of the known device is the impossibility of using it to separate the pulse sequences by the repetition period. Since the opening of the selection channel (opening of the element I) occurs periodically, this period: is determined not by the pulses coming from the receiver, i.e. input pulses for the selector and period. following the reference pulses, arriving or the pulse shaper in amplitude. The reference pulse delayed by the shaper of the distance and resolution pulses opens the selector channel. In turn, the follow-up period of the reference pulses is determined by the synchronizer. Thus, the selection parameter in the known device is the temporal position of the input pulse relative to the reference pulse, as a result of which the prototype cannot be used to separate the pulses of periodic sequences by the repetition period. The purpose of the invention is to expand the functionality. The goal is achieved by the fact that a multichannel selector containing P. channels, each of which echoes from the pulse selector over the period and the AND element, is inserted into each channel a prohibition element whose output is connected to the first input of the pulse selector over the period, the device for selecting the first pulse, the first input of which is connected to the output of the first OR element and the second input of the pulse selector by period, the second input to the first output of the pulse selector by period and the channel output, and the first input to one input of the elements And as the other input of which is connected to the output of the second OR gate, and an output - to one output of the first OR gate; Information icon inputs of the prohibition elements of each channel are combined and connected. with the input bus, and prohibiting inputs with the second outputs of the pulse selectors of all channels except its own, the second inputs of the first OR elements of each channel are connected and connected to the reset bus, the second outputs of the first pulse extraction devices of each channel are connected to the input of the second elements of the OR all channels except their own . In the drawing of Fig. 1, a diagram of the device proposed is shown; in Fig. 2, an example of the implementation of a pulse selector by period; on fig.Z - timing diagrams. The proposed device contains n channels of selection. Each channel contains a prohibition element l, the first element OR 2, the selector 3 pulses over the period, the element 4,. device 5 in the first im pulse, pulse, second element OR b. The device has a reset bus 7, an input bus 8 and in each channel is output-, move 9, where N 1,2,3 ... In each channel of the multichannel selector device, the output of prohibition element 1 is connected to the first input of selector 3. First input of the device the selection of the first pulse 5 is connected to the output of the OR element 2 and the second input of the selector 3, the second eductor to the first, the output of the selector 3 and the channel input 9, and the first output to one input of the AND 4 element, the other input of which is connected to the output of the OR element b. the output of the AND 4 element is connected to one input of the first element OR 2. The information inputs of all prohibition elements 1 are connected to the input yinoy 8. The second outputs of selectors 3 of each channel are connected to the inhibitory inputs of prohibition elements 1 of Bcek channels except for their channels. The second inputs of the elements OR 2 are connected by the bus 7 reset. The second outputs of the selection devices of the first pulse 5 of each channel are connected to the inputs of the elements OR b of all channels except their own. The pulse selector 3 over a period can be performed according to the scheme (. FIG. 2). In this case, it contains the first pulse extraction device 10 connected in series, the first element OR 1, the delay device 12, the gate driver 13, the AND element 44, the second circuit, the second element OR 16 Another input element AND 14 is connected to the first input of the device for selecting the first pulse 10 and input 17 of the selector 3, the second is the stroke of which 18. Output) from (AND element 14 is also connected to the second inputs of the OR element 11 and the former 13 gates and with the first OUTPUT4 19 the selector 3. The second input of the scaling circuit 15 is connected to the first output of the gate body 13 and the second output 20 of the selector 3. The output of the OR element 16 is connected to the second and inputs of the first pulse extraction device 10 and the delay device 12. The second output of the phono 13 the gates are connected to the third input of the OR element 11. The other input of the electrical tape OR 16 is connected to the second input 18 of the selector 3 Consider the operation of the pulse selector 3 (figure 2). . When a signal arrives at the second input 18 of the selector 3, the device 10 dividing the first pulse and the device 12 delays are reset. When pulses arrive at the first input 17 through the device 10 and the element 11, the device 12 is started and a delay of 6 t is made up of the filler 13. The latter opens the element AND 1 therefore the input pulse, getting into the gate, enters the first output, 19 selectors and through the element OR 11; restarts the device 12 delays, etc. The same impulse resets the shaper 13 gates and recalculate circuit 15. The signal from the gate of the formatter -13 gates enters the SECOND selector 20. This same signal goes to the second input of the recalculated CX. &Amp; LL15, where the counting takes place when there is no signal to the reset from the output of the I 14 element. Therefore, if the input pulse does not enter the strobe after K gates (K is the recalculation factor of circuit 15) The output of circuit 15 is a signal passing through the eltent OR 16 and device 10. Delay device 12 is also triggered by a signal from the middle of the strobe, arriving at its entrance from the second output of the driver of the 13 strobe through. ment OR 11. The selector 3 selects pulses with Leriod + -f-tet ™ ® ez PP® signal delay in device 12; i is the duration of the strobe pulse generated by the shaper 13 The operation of the device as a whole is considered according to the embedded diagram (Fig. 3); where the process iTpex of periodic sequences with periods T1, T2 and T5 is presented. Before the start of the work, the device bus 7 receives a reset signal, which reset the selectors 3 and the selection devices for the first pin 6 of all / channels. In a state transition, signals at the second outputs of all selectors 3 are absent, as a result of which all elements of prohibition 1 are open, and at the first outputs of device 5, a signal appears, opening elements K 4 of all channels. The impulses of the input sequence, which in the 4 cases are considered, are a mixture of three periodic sequences with periods T1, l T2 and T5 received on bus 8 (diagram 21, figure 3. Since all elements of prohibition 1 are open, all are started. Selector 3. Selector 3 is configured to select one of the periodic sequences, suppose that selector 3 is configured for a sequence with period T-1, selector 3 with a period of T2 and selector 3 with a period of TZ, then through the corresponding time from the moment of launch, selectors 3, 3 and 3 form strobe pulses (diagrams in oiI, respectively 22, 23 and 24 in Fig. 3). In a sequence that is a mixture of n periodic {{pulse) sequences, among any P4-1 pulses taken additionally, at least two pulses belong to one periodic sequence., POETSL1U one of the pulses of the input sequence gets into the strobe; selector. This pulse together with the first start-up pulse belongs to one neiHfodic sequence, in this example - the sequence with period T1 and goes to the first one selector 3 as pops into its strobe. From the first I-exit of the selector Z, a pulse passes through the selection device of the first hochpuls 5 to the inputs of the elements OR 6 2, 6, ... b. Impulse with exits. The latter passes through the open electrons AND 4, 4 ... 4, then through the elements OR 2,2, ... 2 and reset the selectors 3, 3 ... W, and devices c2 cZ cP. -JfJf, After the passage of the first pulse, the device 5 closes the element AND 4, since O appears at the first output of the device 5. The selector 3 continues to form gates with a period T1 in which the pulses of the corresponding periodic sequence fall. These pulses are extracted from the input sequence and are output to output 9 (dia- grema 25, fig. 3). Strobe pulses from the second output of the selector 3 block the elements 1, 1, ... 1 of the prohibition, thanks to why im.

pulses of the selected periodic: the sequence in the other channels are not received.

The second pulse of a periodic sequence with period T1 resets the selectors 3, 3, ... 3 to the initial state. Therefore, from the next pulse after the input after-, end-sag, the selectors 3, 3, ... 3 start up. As a result, the selector 3 will form a strobe through the time corresponding to the period T2, which will receive a pulse of a periodic sequence with a period T2 (diagrams 21, 23 and 26, FIG. 3). This pulse passes to the output of the selector 3, then through the device 5 to the elements OR 6 6, ... b. WITH

the inputs of the elements OR bu, ... 6 pulses come through the open elements AND 4, ..; 4, through the elements OR 2, .. 2 into the reset circuit of the selectors 3,. ... 3 and devices 5, ... 5, set them to initial states (for selector 3, a reset occurs before it starts to form a strobe, so the latter is not formed in this case (chart 24, item 3) .

From the output of the element OR b, the pulse will not pass into the reset circuit of its channel, since after the first pulse is extracted by the device 5, the element

And 4 is closed.

17

The selector 3 continues to form gates, selects at output 9 a sequence with a period of T2 (Diagram 26, FIG. 3). The pulses of this sequence are also excluded from the input signal flow for other selectors by means of prohibition elements 1. Since in the input signal stream for selectors 3, ... 3 there are only one periodic sequence pulses, this sequence is captured by the selector 3, just as it does in the single-channel selector, its pulses are output 9 (diagram 27 fig. 3) .1

As a result, at the outputs 9, 9, 9, pulses of periodic sequences t.e. there is a separation by period of periodic sequences arriving at the input of the device in the SM form. The maximum number of divided periodic sequences is equal to the number of selection channels.

The selection parameters in the proposed device are periods, which allows to separate periodic sequences of pulses from their mixture, unlike the prototype, which does not allow separating sequences of pulses by repetition.

Claims (1)

Ϊ57) MULTI-CHANNEL SELECTOR, containing η channels, each of which consists of a period selector and an And element, characterized in that, in order to expand the functionality, a prohibition element is introduced into each channel, the output of which is connected to the first input of the period selector , device for extracting the first pulse, the first input of which is connected to the output ”! first ^! of the first OR element and the second input of the pulse selector by period, the second input - with the first output of the pulse selector by period and channel input, and the first output - with one input of the And element, the other input of which is connected to the output of the second OR element, and the output - with one , the output of the first element OR; the information inputs of each channel inhibit elements are combined and connected to the input bus, and the inhibit inputs are connected to the second outputs of the pulse selectors of all channels except its own, the second inputs of the first OR elements of each channel are connected to the reset bus, the second outputs of the selection devices the first pulse of each channel is connected to the inputs of the second elements, OR of all channels except its own.