SU1651369A1 - Device for electric networks switching - Google Patents

Abstract

The invention relates to electronic switching, specifically to switching devices with several input and output terminals, and can be used for a dependent switch of electrical circuits, in which switching on of a new circuit is accompanied by switching off a previously selected one, and only one circuit can be switched on at a time. The purpose of the invention is to increase reliability and enhance functionality. The device contains a block of 1 switches, a block of 2 triggers, a block of 3 OR elements, a modulo two adder with inversion, an OR-NOT logical element with corresponding connections, which allows to increase reliability by eliminating redundant states and expands the functional states. opportunities due to the development of an additional linear scale code. 1 il. 2 .3

Description

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The invention relates to the field of electronic switching, specifically to switching devices with several input and output terminals, and can be used for dependent switching of electrical circuits, in which switching on of a new circuit is accompanied by switching off a previously selected one, and only one circuit can be switched on at a time.

The purpose of the invention is to increase reliability by eliminating excessive steady states and expanding functional capabilities due to the additional generation of a linear scale code.

The drawing shows a functional diagram of the device.

The device contains a block of 1 switches, including switches 1.1-l.n of the button type with a return, a block of 2 flip-flops, including RS-flip-flops 2.1-2.P, a block of 3 elements. OR, including two-input elements OR 3.1-З.п, adder 4 modulo two with inversion, logical element ШШ-НЕ 5, common power supply bus 6, common bus 7 of zero potential, first group of outputs 8.1-8. П and second group of outputs 9.1-9.p.

The first inputs of switches 1.1-1, p are connected to bus 6, the second inputs of switches 1.2-tn are connected to bus 7, the outputs of switches 1.1-1.p are connected to S-inputs of trigger 2.1-2.P, outputs of trigger 2.1-2 .P form the first group of outputs 8.1-8. The device, the first inputs of the elements OR 3.2-Z.p are connected respectively to the outputs of the elements OR 3.1-3.nf, the first input of the element OR 3.1 is connected to the output of the element OR-NOT 5 and R- the input of the first trigger 2.1, the second inputs of the elements OR 3.1-З.п are connected respectively to the outputs of the flip-flops 2.1-2.P, the inputs of the element OR-NOT 5 connect Eny with trigger outputs 2.2-2.P, outputs of elements OR 3.1-Z.P-1 are connected respectively to R-inputs of triggers 2.2-2.P, the second group of outputs 9.1-9. Parameters of the device are formed respectively by outputs of elements OR 3.1-З .p, the inputs of the adder 4 modulo two with inversion are connected to the outputs of flip-flops 2.2-2.

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In the free state, when one-, the rator does not touch the buttons, all switches 1.1-l.n connect the outputs to the second (lower) inputs. When the button is pressed, the operator performs a switch, in which the output of the switch of the switch with its second input is broken and the output is connected to the first input, i.e. the output is a signal log. M, which is the controller for the associated S-input output of the corresponding trigger block 2.

The device for switching electrical circuits operates as follows.

The device can be in one of the n stable states that correspond to the presence of one logical 1 at the outputs of 8.1-8 p. The zero state of the device (no-out of logical 1m at outputs 8.1-8.p) is eliminated with the help of element 5, which when a logical O occurs at all outputs of 2.2-2.p triggers a signal t, which sets the trigger 2.1 to 1. The state of the device with the number of logical 1 at the outputs 8.1, 8.2, ..., 8.n large one is eliminated with the help of block 3, because logical 1 from the flip-flops with smaller sequence numbers (located closer to the beginning of the chain of elements OR ), transmitted along the chain of elements OR are suppressed (set Lebanon to state D) flip-flops with high sequence numbers.

Let, for definiteness, the device be in the state i (1), logical 1 at the output of the trigger 2.1, at the output of the element 5 - the logical O). If you press any button 1.K, K f 1), logical 1 arrives at the S-input of the trigger 2.K, set at its output 1H. At the same time, at two inputs of adder 4 modulo two with inversion, logical 1 appears, under the influence of which an adder modulo two element with inversion produces at its output a signal of logical 1, which, transmitting along the chain of elements 3.1, 3.2, .. ., 3.p, affects the R-inputs of all triggers and sets the trigger 2.1 to the state of logical O. As soon as the trigger 2.1 goes into the state of logical O, the signal will go

1 at the output of adder 4 modulo two with inversion will stop (a logical O will be set) and a trigger 2.K will take a steady state of logical 1.

Thus, when one of the buttons 1.1-1 is pressed, n of block 1, priority in the occupation of the state of logical 1 is given to the trigger, on the S-input of which this button directly affects. When any trigger 2.m (1) is in the logical 1 state, then the logical 0 will be at the outputs of elements 3.1-3.t-1 and, accordingly, at the outputs 9.1-9.m-1, and the logical t will be at the outputs of elements 3 .ga-z.p and device outputs 9.m-9.n, which corresponds to the linear scale code. The signal at the output of the modulo-two adder with inversion has the state of logical Q., the transition to the state of logical 1 at the time of changing the state of the device when the new trigger is turned on and the former has not turned off.

Claims (1)

Invention Formula A device for switching electric circuits containing a block of n switches, a block of n OR elements and a block of n flip-flops, the first switch inputs are connected to a common power bus, the second switch inputs, except the first one, are connected to a common zero potential bus, the outputs ten 6513696 switches are connected to S-inputs of flip-flops, whose outputs are connected to the second inputs of the OR elements of the OR block and form the first group of outputs, the first inputs of the OR elements, except the first element, the OR element block are connected respectively to the outputs of the preceding OR element of this block, that, in order to increase reliability by eliminating excess steady states and extending the functionality 15 due to the additional generation of a linear scale code, a modulo-2 adder with inversion and an OR-NOT element are introduced, the first input of the first OR element of the OR element block is connected to 20 output of an adder modulo 2 with inversion and R-input of the first trigger of the trigger block, inputs of the modulo 2 adder with inversion are connected to the outputs of the trigger of the trigger block, the outputs of the OR elements, except for the last element, the block of OR elements are connected respectively with the R inputs of the triggers 2-p, the inputs of the OR-NOT element are connected to the outputs of the flip-flops of the 2-n block of the triggers, the output of the OR-NOT element is connected to the second input of the first switch of the switch block, the outputs of the OR elements of the OR block form the second group of outputs CTBA, trigger unit triggers outputs connected to respective inputs of an OR-element NO. thirty 35