SU627570A1 - Pulse train shaping device - Google Patents

Description

The invention relates to a pulse technique and can be used in software programmers of automatics.

A device for generating pas is known. 5 pulse check containing trigger and clock pulse generators, binary counter, trigger, delay element, driver and RC - chain.

The drawback of the device is the draw functionality, namely the impossibility of automatically changing the number of pulses in a series.

The closest technical solution to this is a device for forming a series of pulses, comprising a pulse generator, AND elements, a trigger, and f2J counters.

The disadvantage of the device is its functionality, namely, the device does not allow generating a series of pulses with a varying number of pulses in the series, .25

. L A

The aim of the invention is to extend the functionality of the device for forming a series of pulses.

This goal is achieved by the fact that in yctw a device for forming a series of pulses containing a pulse generator, -inverted OUTPUT is connected to one of the INPUTS of the first element AND, the other INPUT of which is connected to the trigger output, the first and second inputs of which are connected respectively to the outputs of the first and the second recalculated blocks, and the second element And, the direct output of the pulse generator is connected to the inputs of the first and second recalculated blocks, and the INPUTS of the second element And are connected to the outputs of the first and second transducer blocks shackles, and second AND OUTPUT is connected to third input of the trigger.

Claims (2)

FIG. 1 is a structural block diagram of an apparatus for forming a series of pulses; in fig. 2 is a timing diagram of its operation in a series generation mode with a constant number of pulses} in FIG. 3 - time diagram of the device operation in the mode of generation of color series, with progressively changing the number of pulses. . A device for forming a series of pulses contains a pulse generator 1, which has two outputs, direct 2 and inverse 3 | scaling blocks 4 and 5, elements 6 and 7, trigger 8 (type RS). The device works in two modes. In the generation mode of a series with a constant number of pulses (Fig. 2), the conversion coefficients of blocks 4 and 5 are equal to Cd-K / K. Initially, one of the nepe-i countable blocks (for example, 4) is written with the number N, where N is the required number of pulses in the series. Generator 1 generates two pulse coils left at outputs 2 and 3, shifted out of phase by 180. The pulses from the direct output 2 of the generator 1 are fed to the counting units 4 and 5. After N pulses, an overflow pulse appears at the output of the unit 4, which sets the trigger 8 to a single state at the input of the control unit 3. This ensures the passage of pulses from the inverse output 3 of the generator 1 through the element And 7 to the output of the device. Through K frequency pulses P (2), an overflow pulse appears at the output of the trans. the counting unit 5, set on the input Ry trigger 8 to the zero state. The pulses from output 3 to the output of the device do not pass. Element I 6 does not work in this mode, since the overflow pulses of counting blocks 4 and 5 do not coincide in time for any N. Thus, in this mode, the generation of a series with the parameters is provided: the number of pulses in the N & K series; the interval between pulses in the T series; fiz series follow-up period. In a series generation mode with a progressively changing number of pulses (Fig. 3), the conversion factors of the 4 H.5 blocks are not equal to K. Suppose y. The condition for device operability is the K4 ratio. / where C is an integer. In this mode, the interval between overflow pulses of recalculating blocks 4 and 5 progressively changes with discreteness (K.-K) p, the duration of a single pulse at the direct output of the flip-flops, i.e. with discrete-. (K, -K J changes the number of pulses in the series. In the last G-series, the overflow pulses of blocks 4 and 5 with & drop in time, and the trigger 8 can appear in the stand-by mode, but the pulse from the output of the AND 6 element sets it at the R input to the zero state, then the processes are repeated. Thus, in this mode, the series is generated with a progressively changing number of pulses in the series, and the number of pulses in the series changes from (,) to K with discreteness (), the interval between pulses in the series T сг ®РЧОД series} Amount of series in a cycle Using a device allows generating not only a series with a constant number of pulses, but also a series with a progressively changing number of pulses. Formula for generating a series of pulses containing a pulse generator, the inverse output of which is connected to one of the inputs of the first element And, another input of which is connected to the trigger output, the first and second inputs of which are connected respectively to the outputs of the first and second recalculating units, and the second element € I, from In order to extend the functionality, the direct output of the pulse generator is connected to the inputs of the first and second counters, and the inputs of the second element AND are connected to the outputs of the first and second counters, and the output of the second element And connected to the third input of the trigger. Sources of information taken into account during the examination: 1, USSR Author's Certificate No. 400012, .cl. H 03 K 3 / 78,24.11.71. 2. USSR author's certificate No. 488328, cl. H 03 K 3 / 64.19.06.73. L1