SU627419A1

SU627419A1 - Frequency converter

Info

Publication number: SU627419A1
Application number: SU752107443A
Authority: SU
Inventors: Тофик Мамедович Алиев; Георгий Суренович Бунятов; Михаил Сергеевич Литвинов; Валерий Залманович Скобло
Priority date: 1975-02-18
Filing date: 1975-02-18
Publication date: 1978-10-05

Description

Изобретение относитс к технике H3N eрени и преобразовани частотных сигналов может быть испопьзовано 1ш вторичногс преобразовани выходного сигнала частотных датчиков.The invention relates to the technique of H3N emitting and converting frequency signals can be used with a secondary conversion of the output signal of frequency sensors.

Известен преобразоватепь частоты, содержащий генератор, умножитепь периода , бпок управ пени , генератор линейно измен ющегос напр жени 1 .A known frequency converter, comprising a generator, a period multiplier, a control pulse, a generator of a linearly varying voltage 1.

Однако этот преобразоватепь частоты сложен и не обеспечивает необходимой точности преобразовани .However, this frequency converter is complex and does not provide the necessary conversion accuracy.

Известен также преобразователь частоты , содержащий генератор опорных импульсов, триггера, элемент И линейкое усредн ющее устройство .A frequency converter is also known, comprising a reference pulse generator, a trigger, an AND element and a linear averaging device.

У этого устройства тот же недостатокThis device has the same drawback.

Цепь изобретени - аовьгшение точности преобразовани частоты.The circuit of the invention is improved frequency conversion accuracy.

Это достигаетс тем, что в преобразователь частоты, содержащий триггер, первый вход которого соединен через элемент И с первым входом второго тригге ра, выход которого П01цсг ючен к входу первого триггера, а также генератор опорных импульсов, введены переключатель, счетчик импульсов и элемент И, первый вход которого соединен со вторым выходом первого триггера, второй вход подключен к первому входу счетчика импульсов и к переключателю, а выход подключен ко второму входу второго триггера , выход счетчика импульсов соединен со вторым входом первого триггера, а счетный вход счетчика импульсов соединен через переключатель с выходом генератора опорных импульсов.This is achieved by the fact that a switch, a pulse counter and an element And, the first input of which is connected to the second output of the first trigger, the second input is connected to the first input of the pulse counter and to the switch, and the output is connected to the second input of the second trigger, the output of the pulse counter is connected to the second input m first flip-flop and counting pulses of the counter input is connected via a switch with the output reference clock.

На чег)теже представлена структурна электрическа схема преобразовател частоты.The diagram shows a structural electrical circuit of the frequency converter.

Преобразователь частоты содержит генератор образцовой частоты 1, переключатель 2, счетчик импульсов 3, триггер 4, элементы И 5,6, триггер 7, линейный усредн ющий блок 8.The frequency converter contains an exemplary frequency generator 1, a switch 2, a pulse counter 3, a trigger 4, elements AND 5.6, a trigger 7, a linear averaging unit 8.

Работает преобразоватепь частоты следук дим образом.The frequency converter should be dimmed.

Claims

In the upper position of the switch 2 (as shown in the drawing), the deviation of the wire is measured, in the lower position. when the output of the reference pulse generator 1 is connected to counter 3, and the pulses of the measured signal are fed to its impedance input, the frequency of the measured signal is measured. Consider the operation of the device when izmenenni period deviation. During the time interval between two pulses and the measured period Tj arriving at counter 3, its input is received in the order of 4–1 supporting impulses. If as soon as the set number 4-1 was reached, you at the turn of the counter 3 appear implausible, the dependence between the frequency of the counter pulse pulses {fi) and the measured period TV f T X: Or, in other words, when IL changes within ,. the frequency of the pulses at the output of the counter (i s;) varies from O to y; -p The device operates as follows. The impulse from counter 3 sets the trigger 4 to state 1, and, blocking element AND 6, prepares element AND 5. When the impulse Tj arrives, counter 3 returns to its original state, and trigger 7 through open element 5 to the state 1, returning the trigger 4 to the state O, blocking the element AND 5 and preparing the element AND 6. If the next TV’s impulse comes earlier than the pulse from counter 3, it will, through the element 6, reset the trigger 7 to the state O (the initial state ). If the pulse T is preceded by a pulse from counter 3, trigger 7 remains in state I. Thus, each pulse from counter 3 corresponds to a pulse of duration Tj at the output of trigger 7 Sequence of the pulse sequence from trigger 7 S f –T – C H This factor they are normalized by setting the period of the reference pulses of the generator G - T - T o ALAX MMM chime m; At the same time, x min t t MAX PIM where and T dz are the corresponding imaginary and maximum values of the measured period T. As can be seen from (1), the device can also convert the deviation of the often measured signal to the average fill factor (S). This requires shifting the switch 2 to the lower position. and the pulses of the signal being measured are applied to it by him. " safe entrance. In this case, S Te & x-t. Claims A frequency converter comprising a trigger, the first output of which is connected through an I element to the first input of a second trigger, the output of which is connected to the first input of the first trigger, as well as a reference impulse generator, characterized in A switch, a pulse counter and an I element are inputted to it, the first input of which is connected to the second output of the first trigger, the second input is connected to the first input of the pulse counter and to the switch, and the output to the second input is second trigger pulse counter output coupled to an input of the first flip-flop vtorgm and impupsov counting input of the counter is coupled through a yield perekpgochatep reference clock. Sources of information taken into account during the experiment: 1 Technical description of the device LT-1761, manufactured by 8odoiv-fcro.n 3) ATA

2. Certificate of CCCF №398876. G, 01R 19/26, 09/27/72.