SU932607A1

SU932607A1 - Signal discriminating device

Info

Publication number: SU932607A1
Application number: SU802892516A
Authority: SU
Inventors: Константин Константинович Рябков; Михаил Егорович Жандаров; Вячеслав Терентьевич Пивоваров
Original assignee: Предприятие П/Я Р-6794
Priority date: 1980-03-05
Filing date: 1980-03-05
Publication date: 1982-05-30

Description

: Изобретение относитс к импульсной технике и может найти применение в системах св зи и телесигнализации .: The invention relates to a pulse technique and may find application in communication systems and remote signaling.

Известно устройство дл селекции сигналов, содержащее амплитудный дискриминатор, временной дискриминатор , на вход которого подан сигнал с амплитудного дискриминатора , генератор опорной частоты, сигнал которого через логические вентильные схемы поступает на счетчик ГП.A device for selecting signals is known, which contains an amplitude discriminator, a temporal discriminator, whose input is a signal from an amplitude discriminator, a reference frequency generator, the signal of which through logical gate circuits is fed to a meter.

Недостатком данного устройства вл етс мала надежность селекции.The disadvantage of this device is the low reliability of selection.

Наиболее близким по технической сущности к предлагаемому вл етс устройство, содержащее дискриминаторы сигналов по длительности с усилител ми , дискриминатор сигналов по амплитуде, вход которого соединен с входной шиной, триггер, генератор/ тактовых импульсов, выходные триггеры , элементы И, регистр, распределитель , триггер контрол по четное- ти, элементы ИЛИ, НЕ, триггер защи/ты .The closest in technical essence to the present invention is a device containing signal discriminators with duration with amplifiers, amplitude discriminator of signals, whose input is connected to the input bus, trigger, generator / clock pulses, output triggers, And elements, register, distributor, trigger control of evenness, elements OR, NOT, trigger protect / you.

Однако устройство обладает недостаточной эффективностью и сложностью .However, the device has insufficient efficiency and complexity.

Цель изобретени - повышение эффективности селекции и упрощение устройства.The purpose of the invention is to increase the efficiency of selection and simplify the device.

Поставленна цель достигаетс The goal is achieved

10 тем, что в устройство селекции си|- налов, содержащее амплитудный компаратор , вход которого соединен с входной шиной, а выход подключен к первому входу триггера и входу элемен15 та НЕ, генератор тактовых импульсов, два элемента И, первые счетчик импульсов и анализатор временного интервала , вход которого соединен с выходом счетчика, а подключен 10 by the fact that the selection device has a amplitude comparator, the input of which is connected to the input bus, and the output is connected to the first trigger input and the input of the NOT, the clock generator, two I elements, the first pulse counter and the time analyzer interval, the input of which is connected to the output of the counter, and connected

Claims

20 to the driver input, a second pulse counter and a time interval analyzer are introduced, the input of which is connected to the output of the second pulse counter, and the output is connected to the first input of the first pulse counter, the second input of the driver and the second input of the trigger, the output of which is connected to the first input of the first element And , the second input of which is connected to the output of the clock generator and the first input of the second element And, the second input of which is connected to the output of the element NOT and the first input of the second pulse counter, the second the input of which is connected to the output of the second element I, (and the second input of the first pulse counter is connected to the output of the first element I, the third input of which is connected to the output of the first time interval analyzer. The drawing shows the structural electrical circuit of the proposed device. The device contains amplitude comparator 1, 2 clock pulse generator, trigger 3, element NOT C, first and second elements 5 and 6, first and second counters 7 and 8 pulses, analyzers 9 and 10 time ji intervals, driver 11. Selecting my signal supplied to the input line 12. The device operates as follows. The input signal – interference mixture is input to comparator 1, which generates pulses that are normalized in amplitude and with durations equal to the duration at the time they cross the threshold UpQp. In the initial state of the counters 7 and 8 pulses, the trigger 3 and the driver 11 are in the zero state. The leading edge of the first signal, the trigger 3, is transferred to the state that opens element 5, i.e. permits the passage of pulses from the generator 2 to the input of the counter 7- Information of the counter 7, which characterizes a time interval equal to ZD (.p: +. - t r i) i p r ps pulse duration and t r p the input pause 9, which, if it exceeds a certain threshold value, generates, on the one hand, a potential signal that prohibits further arrival of pulses from generator 2 to input of the estimator 7, and on the other hand, a pulse signal that allows forming the leading edge of the selected pulse on you the driver of the generator 11. In addition, the signal from the comparator 1 is fed to the input of the element C, the output signal of which is fed to the inputs of the counter 8 and the element 6, the falling edge of the output signal of the element 4, the counter 8 is set to the initial (zero) state q generator 2 positive potential the same signal is connected at the moments of the Pause between pulses to the input of the counter 8. The information of the counter 8, corresponding to the measured pause, goes to the analyzer 10. If the pause is greater than the threshold, i.e. , the pulse output signal of the analyzer 10 is set to the initial (zero state of the counter 7, trigger 3 and shaper 11. The generated pulse of the analyzer 10 at the previous time pulse from the analyzer 9 captures the falling edge of the selected signal, and in the absence of it confirms the initial state of the entire selection device. Thus, the device allows to improve the separation of the useful signal from interference and thereby increase the probability of its detection. shown in a highly sensitive electron-optical television system shows that the device registers a useful video signal with signal-to-noise ratios 2.5 times less than when using the known. Signal of the invention A signal selection device containing an amplitude comparator, the input connected to the input bus, and the output is connected to the first input of the trigger and the input of the element NOT, a clock generator, two elements AND, the first pulse counter and a time interval analyzer whose input is connected to The output of the counter, and the output connected to the input of the imager, characterized by 4fo, in order to increase the efficiency of selection and simplification, introduced a second pulse counter and analyzer time interval, the input of which is connected to the output of the second pulse counter, and the output connected to the first input of pulse counter, the second input of the imager and the second input of the trigger, the output of which is connected to the first input of the first element And, the second input of which is connected to the output of the clock generator and the first input of the second And, the second input of which is connected to the output of the element NOT and the first input of the second pulse counter, the second input of which is connected to the output of the second element And, the second input of the first pulse counter connected to the output of the first element And, the third input of which time intervals. Sources of information taken into account in the examination 1. UK application If 1385206, cl. NRT, 02.26.75.

2. Malov B.C. and others. Kodo-pulse telemetering systems. M., Energie, isibO, p. 172-17.