SU866484A1 - Digital stroboscopic converter of electric signals - Google Patents

Description

The invention relates to electrical measuring technology and can be used in a digital recorder. A strobe electrical signal converter is known, which contains a mixer, a stro generator, fast and slow sawtooth voltage generators and a comparator 1. The disadvantage of this device is the low accuracy of strobe pulse formation due to non-identical forms of sawtooth stresses and instability of the comparison block. . The closest in technical essence to the present invention is a digital stroboscopic converter of electrical signals containing a mixer, the first input of which is connected to the bus of convertible signals, the output — to the output signal bus — and the SECOND input — to the output of the strobe pulse, whose input is connected to the third the input of the first key to the input of zeroing of the second pulse counter and the output of the first block of coexistence of codes, the first EC; which is associated with the code output of the second pulse counter. and the second input is connected to the code output of the first pulse counter, the counting input of which is connected to the second input of the first key, the first input of a sequence of counting pulses connected to the bus, and the output to the counting-1 input of the second pulse counter, and the period selection unit whose output is connected the input of the multiplier of the following frequency of pulses is 2. A disadvantage of the known device is the limited functionality, i.e. it does not allow a single copy of the signal .., The purpose of the invention is the extension of functionality. The goal is achieved by the fact that a digital stroboscopic converter of electrical signals containing a mixer, the first input of which is connected to the bus of convertible signals, the output - to the bus of output signals, and the second input - to the output of the generator-strobe pulses, the input of which is connected to the third input of the first key, the zeroing input of the second pulse counter and the output of the first, coincidence unit, the first input of which is associated with the code output of the second pulse counter, and the second input with the code output of the first account Pulses, the counting input of which is connected to the second input of the first key, the first input of a sequence of counting pulses connected to the bus, and the output to the counting input of the second pulse counter, are equipped with a switch, a second key, a second block of code matching and a register whose code output is with the second input of the second block of code matching, the first input of the converted pulse signal connected to the code output of the first pulse counter, and the output of the converted signal, the zero input of the first counter named pulses and the third input of the second key, the output of which is connected to the counting input of the first pulse counter, the first input to the synchronization pulse bus of the source of converted signals and the first input of the switch, the second input to the output of the switch, the second input of which is connected to the converter trigger signal bus.

The drawing shows a structural electrical circuit of the proposed device.

Z-stgois gk-o cocroviT from mixer 1 re; fepaTopa 2 s: thrompulses, first to;; yucha 3, second counter 4 impulses KOi-.nviyT-.TOpa 5 p of the first unit 6 of the Council of Sov. KO.j.oj. j of the second key 7, the first counter ;; a 3 pulses, the second block 9 code matching and the register 10.

The device works as follows.

If KOivjiyTaTop 5 connects the second input of the second key. 7 with the converter start signal bus, the key 7 is opened with the start signal, then through i-iero the input of the first pulse 8 to the second input of the first key 3 is received with the clock pulses of the source of the converted signal. Each of these indicators has a one-by-one number, containing in the first one. Counter 8 opens the first key 3, after d: from this moment on the input of the second counter 4 enters the last: vate.g: calculator pulse,. When the numbers in counts 41 and 8 and 4 coincide, the first block of matching codes is triggered; the period following the counting pulses. When the number in the counter 8 coincides with the number stored in the register 10, the second block 9 of the codes coincides, the output pulse of which turns the counter 8 around and closes the key 7. The operation of the converter stops before the arrival of the new converter start pulse. The bending voltage at the output of the mixer 1 is one copy of the signal to be converted. The number of voltage levels is determined by the number stored in register 10, which is specified by the operator or, when the converter is controlled by a computer, by software.

If it is necessary to obtain a periodic copy sequence of the converted signal at the converter output, the switch 5 switches to the second position. In this case, each clock pulse additionally opens the key 7 and the operation of the converter is not interrupted by the output pulses of the block 9.

Thus, the proposed device allows one copy of the signal to be converted and provides the ability to work in standby and batch modes.

Claims (2)

Invention Formula A digital strobe electrical signal converter containing a mixer, the first output of which is connected to the bus of convertible signals, the output is connected to the output signal bus, and the second input is connected to the output of the strobe pulse generator, the input of which is connected to the third input of the first switch, the zero output of the second pulse counter and the output the first block of code matching, the first input is connected to the code output of the second pulse counter, and the second input is connected to the code output of the first pulse counter, the counting input of which is connected to About the second input of the first key, the first input of the sequence of counting pulses connected to the bus, and the output to the counted input of the second pulse counter, characterized in that, in order to expand its functionality, it is equipped with a switch, a second key, a second code matching unit and a register whose code output is connected to the second input of the second block of codes, the first input connected to the code output of the first pulse counter, and the output to the sync pulse bus of the transformed signal, the input is cleared the first pulse counter and the third input of the second key, the output of which is connected to the counting input of the first pulse counter, the first input to the synchronization pulse bus of the source of the converted signals and the first input of the switch, the second input to the Konfr output a mutator, the second input of which is connected with the drive start signal of the converter. Sources of information taken into account in the examination 1, P Binin Yu.A. Stroboscopic osillography. M., Owls. radio / 1968. 2. USSR author's certificate number 469080, cl. G 01 R 13/34, 1973 (prototype).