SU506859A1 - Redundant device - Google Patents

Description

(54) RESERVED DEVICE

and element 8 "I. Reserved block output. 1 in Each Kanajje is connected to the nerve input of the element 3 “semi-significant and to the first input an electric amp 6“ OR - “AND, - output iKOTOporo xn piHien with the corresponding input | B01Sstanav) 1 || The output of the recovery body 4 in each channel (connected to the corresponding input of the majority elements 2 of each channel. The output of the majority element 2 in each channel is connected to the second input of the non-initial element 3 and to the installation input in the “About memory element 7” through element 8 whose second input is connected to the output of the redundant unit 1. The output of the inequality element 3 is connected via the integrating element 5 to the input of the element 7, the output of which is connected to the second input of the element 6. The inputs of the proposed device A are the inputs 9 of the reserved blocks 1, and the outputs are the outputs 10 of the restoring organs 4. The input AND is intended to give a signal of the initial installation of the device.

The device operates as follows. Switching on the power, the memory element 7 in each channel and the reserved blocks 1 (if necessary) are set to the state of the initial setup signal arriving at input 11. When the reserved blocks 01B 1 work properly, the signals from their outputs go through the elements 6 "OR -" AND to (INPUTS of the restoring organs 4. The signal from the output of the restoring authority 4 in each channel performs (if necessary) the installation of the redundant unit 1 in the state "O to prepare the device for the next operation cycle. - or The block 1 is detected by the major control elements 2 and the inequality elements 3. At the output of the non-equilibrium element 3, a signal is formed in this channel, which through the integrating element 5 is fed to the input of the 7th am element. made, ashrimer, in the form of a C-chain, eliminates the formation of a false sipnal at the input of element 7, caused by the non-simultaneous arrival of cishals at the inputs of the unequal element. The signal from the output of the integrating element 5 is fed to the input of the memory element 7 and sets it to the state "1. The control signal from the output of the memory element 7 is fed to (Input element 6 "OR -" I. If the AND scheme is used as the elements 6, then the control signal; the output from memory element 7 prevents the signal from the faulty block 1 from passing to the input of the recovery body 4. If the "OR" circuit is used as the elements 6, then the control signal from the output of the memory element 7 passes to the inputs of the recovery body 4 and

reduces its threshold by “1. For example, if the number of reserved blocks 1 is seven, and the threshold of the recovery body 4 is equal to two, then after the failure of the Five reservation blocks 1, the memory elements 7 are activated and, through the elements B and I, the five failed blocks 1 are disconnected. Right blocks 1. Similarly, with the number of reserved

of blocks 1, equal to (seven, and the threshold of the restoring organ 4, equal to six), after failure of five blocks of 1 five memory elements 7, feeds the control signals through elements 6 "OR to the inputs of the restoring

bodies 4, reducing the thresholds of reducing organs 4 to "1. And in this case, the device continues to work with the two remaining healthy blocks 1.

From the above examples, it follows that with

Using the elements “OR the thresholds of the restoring organs 4 must be equal to t-) 1, and using the elements“ And the thresholds of the restoring organs 4 must be equal to two. The difference in these schemes is as follows. The first circuit provides protection at the output of the restoring organ against a “False O” failure in the event of one of the two remaining blocks 1 faults.

If the elements of memory 7 are triggered

due to failure of the reserved block 1, and

not due to his final failure that

detected by block 1

a normal signal in the next cycle of operation, immediately following the cycle, in which a malfunction is fixed, the disconnected channel is again included in the device circuit. This happens as follows. When one signal arrives at both inputs of element 8 "And - from the output of block 1 and (From the output of majoritarian element 2 - element 8" And is triggered, memory O returns the element 7 with its output signal). the output of block 1 to the entrance of the voostaiav of the pouring organ 4, if as elements 6 the schemes "And, or is restored (increased by 1) POR of the restoring body 4, if as elements 6 are used the schemes" OR.

Thus, in the proposed device, failures (self-failing failures) of the reserved blocks 1 and also of the memory elements 7 do not lead to an irreversible decrease in the initial structural redundancy. After a failure, structural redundancy is restored, which significantly increases the noise immunity, and hence the reliability of the reserved device.

Claims (1)

Invention Formula Redundant device tso aut. St. No. 314206, characterized in that, in order to increase its noise immunity and reliability, it contains in each channel the element "AND, the first input of which is connected to the output of the majority element, the second input is connected to the output of the reserved , block, and the output of the element "And connected to the input of the installation In the state" About the memory element, and the output of the recovery body is connected to the input of the installation in the "About the reserved bluetooth.