SU840850A1

SU840850A1 - Pneumatic pulse counter

Info

Publication number: SU840850A1
Application number: SU792828225A
Authority: SU
Inventors: Юрий Иванович Келлерман
Priority date: 1979-10-05
Filing date: 1979-10-05
Publication date: 1981-06-23

Description

Изобретение относится к системам автоматического управления и вычислительной техники и может быть использовано в устройствах пневмоавтоматики.The invention relates to automatic control systems and computer technology and can be used in pneumatic devices.

Известен пневматический счетчик импульсов, содержащий и ячееек [ I) .Known pneumatic pulse counter containing cell [I).

Недостаток устройства - низкая надежность.The disadvantage of this device is its low reliability.

Известен также пневматический счет>чик, импульсов,. содержащий последовательно соединенные ячейки, каждая из которых состоит из элемента памяти, выходного логического элемента и элемента И, первый вход которого соединен с тактовым входом счетчика, выход - с одним входом элемента памяти, .... другой вход которого соединен с каналом сброса счетчика, выход элемента памяти подклю чен к соответствующему выходу счетчика и первому входу выходного логического элемента, второй вход которого соединен с выходом элемента И, а выход - со вторым входом элемента И последующей ячейки[2].Also known pneumatic count> chick, pulses ,. containing sequentially connected cells, each of which consists of a memory element, an output logic element and an AND element, the first input of which is connected to the clock input of the counter, the output is with one input of the memory element, the other input of which is connected to the counter reset channel, the output of the memory element is connected to the corresponding output of the counter and the first input of the output logic element, the second input of which is connected to the output of the AND element, and the output is connected to the second input of the AND element of the subsequent cell [2].

Недостаток счетчика — низкая надежность и долговечность, обусловленная тем, что количество срабатываний элемента И и выходного логического элемента во всех ячейках, кроме последней, значительно превышает количество циклов счетчика и может быть определено зависимостью ms п - К + I, где и - количество ячеек, а К - порядковый номер ячейки.The counter has the disadvantage of low reliability and durability, due to the fact that the number of operations of the AND element and the output logic element in all cells except the last one significantly exceeds the number of counter cycles and can be determined by the dependence ms p - K + I, where and is the number of cells, and K is the serial number of the cell.

Цель изобретения - повышение надеж ности счетчика.The purpose of the invention is to increase the reliability of the meter.

Указанная цель достигается тем, что инверсный третий вход элемента И каждой ячейки соединен с выходом выходного логического элемента данной ячейки, выполненного в виде элемента Запрет',.This goal is achieved by the fact that the inverse third input of the AND element of each cell is connected to the output of the output logical element of this cell, made in the form of the element 'Ban' ,.

На чертеже представлена структурная схема пневматического счетчика импульсов.The drawing shows a structural diagram of a pneumatic pulse counter.

Счетчик содержит и ячеек 1, каждая из которых состоит из элемента И 2, элемента 3 памяти и элемента 'Запрет' 4 Первый вход элемента И 2 соединен с тактовым входом счетчика, на который подаются импульсы Rj , второй вход с входом разрешающего сигнала Р (в первой ячейке) , либо с выходом элемента 'Запрет' 4 предыдущей ячейки (во второй и последующих ячейках), инверсный третий вход - с выходом элемента 'Запрет' 4 этой ячейки. Выход элемента И 2 соединен с входом элемента 3 памяти и с ин-, версным входом элемента 'Запрет' 4. Второй вход элемента 3 памяти каждой ячейки соединен с входом обнуления счетчика. Выход элемента 3 памяти соединен с выходом счетчика и входом элемента 'Запрет' 4.The counter also contains cells 1, each of which consists of an And 2 element, a memory element 3 and a 'Ban' element 4 The first input of the And 2 element is connected to the clock input of the counter, to which pulses Rj are supplied, the second input with the input of the enable signal P (in the first cell), or with the output of the Deny element 4 of the previous cell (in the second and subsequent cells), the inverse third input - with the output of the Deny element 4 of this cell. The output of the And 2 element is connected to the input of the memory element 3 and to the inverse version input of the 'Prohibition' element 4. The second input of the memory element 3 of each cell is connected to the counter zeroing input. The output of the memory element 3 is connected to the output of the counter and the input of the element 'Prohibition' 4.

Пневматический счетчик импульсов работает следующим образом.Pneumatic pulse counter operates as follows.

При наличии разрешающего сигнала Р = I первый импульс Pt, « I переключает элемент И 2 первой ячейки I, сиг в результате чего невозможно и повторное переключение элемента 'Запрет' 4. Следовательно, каждый элемент И 2 и каждый элемент 'Запрет ' 4 в течение одного цикла работы сметчика может сработать ’ только один раз.In the presence of the enabling signal P = I, the first pulse Pt, “I switches the element And 2 of the first cell I, therefore, it is also impossible to switch the element 'Ban' 4 again. Therefore, each element And 2 and each element 'Ban' 4 during one cycle of the operation of the estimator can work 'only once.

’ I’I

Claims

The image refers to automatic control systems and computer technology and can be used in pneumatic automation devices. Known pneumatic pulse counter containing cells CI. The disadvantage of the device is low reliability. Also known pneumatic account chick. impulses j ,. containing serially connected cells, each of which consists of a memory element, an output logic element, and an element, whose first input is connected to a clock input of the counter, an output to one input of a memory element, and another input is connected to a channel reset the counter, the output of the memory element is connected to the corresponding output of the counter and the first input of the output logic element, the second input of which is connected to the output of the AND element, and the output is connected to the second input of the element And the subsequent cell 2. There is a counter - low reliability and durability, due to the fact that the number of actuations of ale 1ent I and the output logic element in all cells except the last, significantly exceeds the number of counter cycles and can be determined by the dependence wg - K + I, where and is the number of cells, and K - serial number of the cell. The purpose of the invention is to increase the reliability of the counter. This goal is achieved by the fact that the inverse third input of the element AND of each cell is connected to the output of the output logic element of this cell, which is made in the form of an element of the Ban,. The drawing shows a structural diagram of a pneumatic pulse counter. The counter contains 5 I cells, each of which consists of an AND 2 element, a memory element 3 and a Ban 4 element. The first input of the AND element 2 is connected to the clock input of the counter, to which pulses P are sent, and the input to the input of the permissive signal P (in the cell), or with the output of the Inhibit 4 element of the previous cell (in the second and the last cells), the inverse third input - with the output of the Ban 4 element of this cell. The output of the And 2 element is connected to the input of the memory element 3 and with the input of the Ban 4 element. The second input of the memory element 3 of each cell is connected to the zeroing input of the counter. The output of the memory element 3 is connected to the output of the counter and the input of the element Zaffet 4. The pneumatic pulse counter operates as follows. .If there is a resolution P of the PI pulse, the Pt in I switches the element I 2 of the first cell I, the signal from the output of which includes memory & 3 memory tapes and locks the bar 4, providing the second signal at the second input of the element 2 of the second cell 1. The signal from the output of the memory element 3 enters the output of the counter and the input of the Ban 4 element. When Pt ,, O element And 2 is disabled, Ban 4 opens and the signal from the memory 3 element passes through the Ban 4 element to the inverse element input And 2 of his cell and the second input element And 2 next gcheyka. The next imput Pt 1 switches the element AND 2 of the second cell, the work of which proceeds now similarly to the work of the first cell, etc. Switching the element And 2 of the first (previous) cell is now impossible, thanks to a single signal at its inverse input. 8 OL as a result of which it is impossible and noBTopHofe switching the element of the Inhibit 4. Therefore, each element AND 2 in each element of the Ban 4 during one cycle of operation, the cheater can only work once. Formula of Invention A Pneumatic Pulse Counter, containing sequentially connected cells, each of which consists of an electronic memory, an output logic element, and an element, the first input of which is connected to the clock input of the counter, an output with one input of the memory element,. another input of which is connected to the counter reset channel, the output of the memory element is connected to the corresponding output of the counter and the first k of the output logic element, the second input of which is connected to the output of the AND element, and the output to the second input of the AND element of the next cell, differing in that, in order to increase the reliability of the counter, the inverse third input of the ali-loop AND of each cell is connected to the output of the output logic element of the given cell, executed in the form of the Ganfet element. Sources of information taken into account at 1. USSR author's certificate No. 26180, cl. D 1/04,.

2. USSR author's certificate number 612235, cl. 6 06 P 1 / OO, 1976 (prototype).