SU1322512A2 - Redundant device with checking - Google Patents

Abstract

The invention can be used to diagnose major redundant devices. The purpose of the invention is to verify the validity of the test. The device contains redundant blocks 1-3, majority elements 4-6 and switches 7-9. Introduction of the 1Q-13 control bus eliminates the possibility of spurious signals appearing at the outputs of the majority elements 4-6 at the moment of the reserve check. 1 il. 6 15 P IN)

Description

eleven

The invention relates to a pulse technique, can be used to diagnose a majority of redundant devices, and is an improvement of the invention according to the author. No. 788463.

The purpose of the invention is to demonstrate the accuracy of the check by eliminating the possibility of spurious signals appearing at the outputs of the majority elements at the time of the reserve check.

The drawing shows a structural electrical circuit of a redundant device with control

The device consists of three redundant blocks 1-3, three major elements 4-6, the inputs of which are connected to the outputs of the switches 7-9, the inverse inputs of each of which are connected to the outputs of the corresponding redundant blocks 1-3 and the buses 10-13 of control. The output signals are removed from the outputs 14-16.

The device works as follows.

When the logical zero information is fed to the buses from each block 1-3, the pass through the switches 7-9 is fed to the inputs of the majority elements without distortion. The check of the state of the reserve is carried out in three cycles, in each of which there is one tire. 10–12, logical units are supplied, and a logical unit is fed to the bus 13 to the policlock, and to another policlaclic zero, to the bus 13.

For example, a logical unit is fed to a bus 10-13. In this case, the output of the switch 7 is a constant logical zero. If supplied to the tire. 13 is a logical zero, then at the output of the switch there is a permanent logical unit.

Editor Y. Shulla

Compiled by, Starlings

Tehred L. Oliynyk Corrector. L. Pilipenko

Order 2880/57 Edition 801 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Project St. 4

O

five

51

0

five

0

five

0

22

In the absence of failures in blocks 2 and 3 and in majoritarian elements 4-6, from the outputs 14-16 the last, undistorted information is produced and, on the contrary, distorted information in the presence of failures in the indicated nodes. Similar cycles need to be carried out when the logical unit is alternately fed to buses 11–12; the criterion of the healthy reserve is that the device performs the specified functions in all three test cycles. If the device contains several nodes (blocks) of splitting jTo into them, the same control signals of buses 10-13 are combined so that the total number of check cycles remains equal to three.

The presence in the redundant device of an additional bus allows a complete check of the redundant device, increases the reliability of the test, expands the applicability and eliminates the possibility of a false signal, i.e. the appearance at the moment of checking the reserve at the outputs of the major elements of short-term spurious signals in the form of notches at the moment of switching. Switches 7-9 can be performed on half-adders or multiplexers. Formula of the invention

Redundant device with control on aut. St. No. 788463, characterized in that, in order to increase the validity of the test by eliminating spurious signals at the time of the reserve check, a control bus is introduced that is connected to the direct inputs of the switches in the three reservation channels.

Claims (1)

Claim 35 Redundant device controlled by ed. St. No. 788463, characterized in that, in order to increase the reliability of the verification due to the exclusion of false signals in 40 moment of reserve check, a control bus is introduced, which is connected to the direct inputs of the switches in three redundancy channels.