SU884118A1

SU884118A1 - Converter of difference and duration of time intervals into voltage

Info

Publication number: SU884118A1
Application number: SU802894945A
Authority: SU
Inventors: Александр Иванович Лишаев; Светлана Петровна Попова
Original assignee: Предприятие П/Я М-5841
Priority date: 1980-03-20
Filing date: 1980-03-20
Publication date: 1981-11-23

Description

(54) ПРЕОБРАЗОВАТЕЛЬ РАЗНОСТИ ДЛИТЕЛЬНОСТЕЙ ВРЕМЕННЫХ ИНТЕРВАЛОВ В НАПРЯЖЕНИЕ(54) DIFFERENTIAL TRANSFORMER OF DURATION OF TEMPORARY INTERVALS IN VOLTAGE

1one

Изобретение относитс к измерительной и вычислительной технике.The invention relates to measuring and computing.

Известен преобразователь разности длительности , временных интервалов в амплитуду напр жени , содержащий входной фор- мирователь, соединенный с блоком управ j лени , компаратор, ключевые блоки, подключенные к блоку управлени , два разнопол рных генератора тока и накопительный конденсатор 1.A known converter of duration difference, time intervals into voltage amplitude, contains an input driver connected to a laziness control unit, a comparator, key units connected to the control unit, two alternating current generators and a storage capacitor 1.

Недостатком такого устройства вл етс низка точность.ЮThe disadvantage of such a device is low accuracy.

Известен также преобразователь разности длительностей временных интервалов в напр жение, содержащий конденсатор, перва обкладка которого через первый ключ соединена с первым выводом генератора тока, второй, третий и четвертый 5 ключи и выходной каскад, вход которого подключен к конденсатору, причем входна шина преобразовател через формирователь и блок управлени соединена с управл ющими входами ключей и выходного каскада (2. Also known is a converter of the difference in durations of time intervals into a voltage containing a capacitor, the first lining of which is connected to the first output of the current generator, the second, third and fourth 5 keys and the output stage, the input of which is connected to the capacitor, and the input bus of the converter through the driver and the control unit is connected to the control inputs of the keys and the output stage (2.

Однако известный преобразователь, содержит второй генератор т.ока с блоком автоматической подстройки дл выравниваHowever, the known transducer contains a second generator, since it has an automatic adjustment unit for alignment.

йи токов обоих генераторбв, что обуславливает его недостатки, заключающиес в сложности и низком быстродействии, что св зано с необходимостью конечного времени дл выравнивани токов.The yi currents of both generators, which leads to its drawbacks, which consist in the complexity and low speed, which is associated with the need for a finite time to equalize the currents.

Цель изобретени - пговышеине быстродействи и упрощение преобразовател .The purpose of the invention is to improve speed and simplify the converter.

Поставленна цель достигаетс тем, что в преобразователе, содержащем конденсатор , перва обкладка которого через первый ключ соединена с первым выводом генератора тока, второй, третий и четвертый ключи и выходной каскад, вход которого подключен к конденсатору, прнчем входна шина преобразовател через формирователь и блок управлени соединена с управл ющимн входами ключей и выходного каскада , второй вывод генератора тока через второй ключ соединен с второй обкладкой KOHJ денсатора н через третий ключ с первой обкладкой, а первый вывод генератора тока соединен через четвертый ключ с второй обкладкой конденсатора.The goal is achieved by the fact that in a converter containing a capacitor, the first lining of which is connected to the first output of the current generator, the second, third and fourth keys and the output stage, whose input is connected to the capacitor, through the driver and control unit connected to the control inputs of the keys and the output stage, the second output of the current generator through the second key is connected to the second plate of the KOHJ capacitor n via the third key with the first plate, and the first The current generator is connected via a fourth switch to the second capacitor plate.

Claims

The drawing shows the function of a 1kLn electric converter circuit. The device contains a current generator 1, a capacitor 2, the plates of which are connected to the outputs of the generator 1 via switches 3-6, driver 7, unit 8 of controls; The lazy output stage 9 includes a readout memory and a voltage follower. The converter input bus through the driver 7 and the control unit 8 is connected to the control inputs of the keys 3-6 and the output stage 9. The converter operates as follows. The input signals in the form of pulse duration modulated after the formation of rectangular impulses of normalized amplitude from them are fed to the input of the logic block B, which controls the operating mode of the converter. Unit 8 switches on keys 3 and 4 for the duration of the first input pulse of duration i, connecting the current generator i to a capacitor 2 for charging it. On arrival of the second input pulse; block 7 turns on Llyuchi 5 and 6 for the time tt. The current generator 1 is connected to the capacitor 2 of opposite polarity and the capacitor is recharged by this. The magnitude and polarity of the residual voltage Uc on the storage capacitor is determined by the sign of the difference in duration ti and tj of the input signals. At the end of the impulse, the ta control unit 8 generates an impulse of readout at the control input of the output stage 9. The duration of the read impulse is insignificant, since it is determined by the speed of commemorating device. A voltage proportional to the difference of the converted time intervals is received at the output of the press. At the end of the reading pulse i, the block in the control generates the discharge pulse of the condiser 2 supplies it to the second control inputs of keys 4 and b. Discharging capacitor 2 through the keys ends the conversion cycle and the converter is prepared for the next cycle. The invention provides a simplification of the device and an increase in its speed by eliminating the time required for leveling the currents. The invention of the converter of the difference in durations of time intervals in a voltage, contains a capacitor, the first lining of which through the first key is connected to the first output of the current generator, the second, third and fourth keys and the output stage, the input of which is connected to the capacitor, and the input terminal of the converter through the driver and the control unit connected to the control inputs of the keys and the output stage, characterized in that, in order to increase the speed of the converter simplification, the second output current through the torus soednnen second key with said second electrode of the capacitor and through the third key with said first electrode, and the first current generator output Cpd "eu through the fourth key from the second electrode koideisatora. Sources of information taken into account in the examination 1. A. Gavrnlkin. Photoelectric method of combining photographic photographic and semiconductor plastics - Sat. “Electronic technology, sir. XV, 1970 issue 3/24, p. 88-100.

2. USSR author's certificate No. 558397, cl. H 03 K 13/20, 02.03.73.