SU1448339A1 - Device for monitoring and indicating failures - Google Patents

Description

The invention relates to automation and computing and can be used in the development of systems for monitoring and restoring digital computers.

The aim of the invention is to increase the reliability of the control by analyzing various types of sequences of failures of digital computers that are and are not resulting from the failure of digital computers.

FIG. 1 shows a functional diagram of the device; in fig. 2 temporary diagram of the device.

The control device contains the second I, third 2, fourth 3 and first 4 pulse counters, generator 5 clock pulses, second 6, first 7 triggers, first 8, second 9 decoders, first 10, second P, fifth 12, seventh 13, third 14, the fourth - the sixth 16 elements And, the single vibrator 17, the first 18 and the second 19 elements OR, the device input 20, the output 21 Normally, and the signal output 22 The device failed, the first 23 and the second 24 outputs of the clock generator.

The second counter is designed to count the number of pulses that fail to arrive at the input of the device during the observation interval,

The third counter 2 is designed to determine the time interval corresponding to the duration of the observation interval. Pulses from the second 24 generator output, 5 clock pulses, are supplied to its counting input. The duration of the observation interval is determined by the frequency of the clock and the capacity of the counter.

The fourth counter 3 is designed to determine the time interval between the end of the observation interval and the last pulse accumulated in it and compare it with the safety interval. Pulses from the second 24 generator output 5 clock pulses are applied to its counting input. The duration of the safety interval is determined by the frequency of the pulses and the capacity of the counter.

The first counter 4 is designed to count the number of failures of the next failures to the input 21 of the device and the failure signal when their number is equal to the specified one.

0

five

0

five

0

five

0

five

The clock generator 5 is designed to form two grids of clock pulses that synchronize the operation of the device.

The second trigger 6 is designed to receive and store information about the failure of the controlled digital computer and control the operation of the generator 5 clock pulses.

The first trigger 7 is designed to receive information about the failure and organize the beginning of the measurement cycle of the observation interval and the safety interval by the third 2 and fourth 3 counters, respectively, as well as to issue a signal at the output 2 of the device,

The first decoder 8 is designed to analyze the degree of filling of the fourth 3 counter and issue a single signal if it is filled for a value corresponding to the safety interval.

The second decoder is designed to analyze the degree of filling of the third 2 counter and the output of a single signal, if the counter is filled by the value corresponding to the observation interval.

The first element 10 is designed to form the impulse of setting the first counter 4 to zero during interruptions in following the fault signals to the input 20 of the device.

The second element 11 is designed to issue a pulse pulse to the counting input of the second 1 counter5 to the C-inputs of the second 7 trygger and to the input of the installation to zero of the fourth 3th counter through the second 19 OR element.

The fifth element And 12 is designed to form a reset pulse of the second 7 Tpi-srrepa, second i, third 2 and fourth 3 counters, provided that the third 2 and fourth 3 counters are filled with the value corresponding to the monitoring and safety interval, respectively, and the second J is filled to a value less than the specified one, which means that the number of failures was less established during the observation interval, and a time equal to or greater than the safety interval elapsed since the last failure.

The seventh 13th element And is intended to form the impulse of installation into the unit of the second 6-7 rigger, under the condition that the second counter is locked.

and the third is not filled, i.e. impulses of failures came more than the specified time less than the interval of observation.

The third element I I4 is designed to clock the pulses at the counting input of the third 2 counter after the arrival of the first failure pulse at the input 20 of the device, provided that it is not filled to the value corresponding to the observation interval.

The fourth element of AND 15 is intended to transmit sync pulses to the counting input of the fourth 3 counter after the arrival of the first fault pulse to the input 20 of the device, provided that it is not filled to the value corresponding to the safety interval.

The sixth element And 16 is designed to impulse the input to the fifth 12 element And, if the third 2 and fourth 3 counters are filled by an amount corresponding to the intervals of observation and security, respectively.

The single-oscillator 17 is designed to impulse sufficient to trigger the second 1, third 2 and fourth 3 counters and first 7 flip-flops at the end of the observation intervals and safety in the number of failures during the observation interval less than the specified one, and with the next sync pulse after the end of the observation interval input device 20.

The first element OR 18 is designed to supply a single potential to the S input of the second 6 flip-flop in order to translate it into a single state when the first 4 meters are filled up to the specified number or the second 1 meter is filled to the set numbers, provided that the third 2 meter is not filled to the value corresponding to the observation interval. The second element OR 19 is designed to transmit a pulse set to .nol of the fourth 3 counter at the arrival of each failure pulse, as well as during the formation of a signal.

The device works as follows.

A device for monitoring and indicating failures analyzes the type of failure sequence that occurs in a digital computer for a certain time interval (observation interval). Durable0

The scope of the observation interval is selected for reasons of ensuring maximum reliability of the control and maximum time spent on it. It starts with the arrival of the first failure pulse, and the failure sequences of the digital computers are controlled by the presence of successive failure sequences, their length, frequency, and the location of the failure packets in the monitoring interval. In case of occurrence of the S interval and more failures, as well as failures, a failure signal is generated.

5 controlled digital computers. In addition, in order to eliminate the control errors associated with the fact that at the end of the observation interval a packet of faults begins, the device analyzes the time intervals between two adjacent faults. The signal from the output of the proposed device about the absence of a failure and the inclusion of a digital computer in further operation is, in the event that

5 observations occurred in addition to intermittent failures or S failures in arbitrary order, and also since the last failure the specified time interval (safety interval) passed, which indicates that the last failure was not the beginning of a packet of errors. ; If since the last crash iiter-, the safety shaft has not finished, then. the monitoring interval is overcome | before it ends. The duration of the observation interval and the safety interval is chosen based on the statistical data obtained during the operation of the computer, taking into account the operating conditions.

In the initial state, all elements of the device concept are in the zero state.

Depending on the number and type of sequence of pulses of failures during the observation interval, it is advisable to consider three options for the operation of the proposed device} failures will be delivered twice, and their number will be greater than the specified number K (Fig. 2); failures go arbitrarily, and their number is greater than a given number S (Fig, -2); failures go arbitrarily, and their number is less than a given S.

5 (2).

Consider the first case. The operation of the device begins after the arrival of a pulse pulse at the input 20 of the device, which arrives simultaneously with the

0

five

five

0

5 1448339

the first pulse of the 23rd output a geneti-

It has 5 clock pulses and a decoder length 2, since the filling

is greater than it. The counter 2 does not correspond to the interval; the trigger 7 is triggered, and the observation count,

chick 2 starts counting the sync pulse OR 18 pulse arrives at the S-input

owls coming from the first output of the trigger 23 to output 22 of the generator device 5 clock pulses, a willow signal is generated, and from

the duration is longer than it, the inverse output of the trigger 6 is zero

In this case, the trigger 7 is triggered and the IQ potential signal arrives at

counter 2 starts counting the synchro-control input of the generator 5 clock pulses, post-output from the first output pulses and stops issuing

yes 23 oscillators 5 clock 1-pulse pulsations.

through the element And 14, i.e. starts in the third case, the device starts at the beginning. observation .15 “it works in the same way as described.

Besides. When the observation interval ends, the counter 3 sets to zero and counter 2 overflows. The counter enters counter 4, the decoder 9 sets its output, and counter 3 begins to calculate a high potential, which the synchro impulses coming from the second The 20 inverse input of the first output of the generator 24 of the clock 5 and 14, stops the passage of clock pulses, i.e. The detection-pulses to the counting input of the counter 2 begins. Next, in addition, the signal from the output of the deciphering incoming impulse, the error also of the amplifier 9, goes to the second input and, at zero, counter 3 and post-25ment I 16. The impulse from the element output to the counter input of counters 4, 1 and 16 is fed to the input element. Next, the operation of the device at the arrival of 3 2 to form a signal, Isp., The pulse is similar. With the right-handed one-shot 17, the output of the K-th pulse fails to trigger 7 if pulse observation time passes from the overflow of the counter 4 and from its last-minute fault in the interval of the overflow stroke equal to the input input of the OR element 18. The incoming safety interval, which is indicated by the output of the 18 SHS 18 element, implies the filling of the counter 3 and turns into one state corresponding to this interval, flip-flop 6. Signal from the i-Schwarz output 5 If since the last yes trigger by doing The clock pulse that is sent to the control unit, arriving at the generator input 5 clocks and from the second output 24 of the generator 5 pulses, stops the output of the clock-touch pulses through the pulse element, and at the output 22 of the device 15 to the counter input 3 failure signal, 40 by an amount corresponding to the second case, the operation of the device safety device, then the output

also begins upon arrival at the input of the decoder 8 a high

2, a pulse pulse device, which has a potential that, when applied for other changes, is analogous to the AND 15 input element of the element, ceasing to the considered mode. If45 ® arrival of clock pulses on

after the first fault in the next clock, the counting input of counter 3. In addition,

no error followed, then from the output of the high potential, formed on the test and 10, an impulse is formed, which the course of the decoder 8 goes to

The first input of the element is set to the zero state. And 16. With the post counting 4. The operation of setting the signal to zero in the zero QQ.

counter 4 is repeated in all cases-2 by an amount corresponding to inches, when there are interruptions in the observation interval, and counter 3 on

failure sequences. All post value corresponding to the interval

pans to the input 20 of the device impulsessecurity, from the outputs of the decoders

Failures are received on the counting input of the account-gg 8 and 9 at the input of the element I 16 on its

1. When the S-pulse arrives, a pulse is formed on the output, the output of counter 1 is a signal arriving at the input of the element I 12. From the output

TL & input element And 13, on the inverse elements 12 pulse is fed to

 the input of which enters the zero input of the one-shot 17. From the output of the one-shot the pulse arrives at the R-input of the trigger 7 and a signal is generated at its output 21. In addition, the pulse from the output of the decoder 17 enters the installation inputs of the second, third 2 and fourth 3 counters and sets them

to zero.

mg./

Kftodpi d cffosS sv anterote cffoed ya t / ffmepda / f

Survival observations -LJ --- L III- L-IL

(/ | ... | -I 1-. | I

I 1

11 ... i t-t-I

1 l K

Tg

- --- L

Editor N. Gorvat Tehred M. Didyk

Order 6847/53 Circulation 866 Subscription

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. D. 4/5

(/ | ... | -I 1-. | I

I I --- 1-1 I- I

it

ji.

i-

r r

j

t I

/ mth

nririn-

 1-i

/ -yvynr x

Figg

Proofreader G. Reshetnik

Claims (1)

DEVICE FOR MONITORING AND INDICATION OF FAILURES, containing the first pulse counter, the first, second and third elements AND, the first element. OR, a clock generator connected by the first output to the direct input of the first element AND, connected by the output to the installation input of the first pulse counter connected to the counting entrance to the output of the second element And related. the first input with the information input of the device, and the second input with the first output of the clock generator, characterized in that, in order to increase the reliability of the control, three pulse counters, two decoders, a single vibrator, two triggers, an OR element, four AND elements are introduced into it moreover, the inverse input of the first AND element is connected to the first input of the second AND element, connected by the output to the counting input of the second pulse counter, with the first input of the second OR element, and with the I- and C-inputs of the second trigger connected by an inverse output to output '' The device is working properly, the R-input is to the output of a single-shot device, to the installation inputs of the second and third pulse counters and to the second input of the second OR element, and by direct output to the first direct input of the third AND element and to the first direct input of the fourth AND element, connected by the second direct input with the second direct input of the third element And, with the first input of the fifth element And and with the second output of the clock generator, and the output with the counting input of the fourth pulse counter connected to the installation input to the second OR element, and the bit outputs — to the inputs of the first decoder, connected by the output to the inverse input of the fourth AND element and to the first input of the sixth AND element, connected by the output to the second input of the fifth AND element, and the second input to the inverse input of the seventh AND element , to the output of the second decoder and to the inverse input of the third element And, connected by the output to the counting input of the third pulse counter, connected by bit outputs to the inputs of the second decoder, the output of the fifth element And is connected to the input one vibrator, and the direct input and output of the seventh element And, respectively, with the overflow output of the second pulse counter and with the first input of the first And element connected by the second input to the overflow output of the first pulse counter, and the output to the S-input of the second trigger connected by direct output to input Failure of the device, and the inverse output with the control input of the clock generator., SU 1448339 A1