SU1501059A1 - Device for monitoring control unit - Google Patents

Abstract

The invention relates to automation and computing and is intended to detect and localize faults in control units. The purpose of the invention is to expand the functionality of the device by fixing faults of the control unit with an arbitrary sequence of operations. The device contains a group of 1 block fixing errors, (N-1) groups of 2 elements NOT, (N-1) groups 3 elements AND, (N-1) groups 4 elements OR, group 5, 6 elements OR, group 7 elements AND, input 8 of the initial setup of the device, (N-1) groups 9 of the device configuration inputs and group 10 of the device error outputs. The invention allows control of the control unit for the general case of functional relationships between operations. A positive effect is achieved by introducing into the device groups of elements NOT, AND, and OR, as well as introducing a group of configuration inputs of the device. 2 Il.

Description

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device inputs and a group of 10 device error outputs. The invention allows control of the control unit for the general case of functional relationships between operations 1501059

The invention relates to automation and computing, intended to detect and localize faults in control units,

The purpose of the invention is to expand the functionality of the device by fixing faults in the control unit with an arbitrary sequence of operations.

FIG. 1 shows a device for controlling a control unit; in fig. 2 - a table of device configuration inputs.

The device contains a group of error fixing blocks 1, (p-1) groups of 2 elements NOT, (p-1) groups of 3 elements AND, (p-1) groups of 4 elements OR, groups 5 and 6 elements OR, group 7 elements AND, input 8 of the initial installation of the device, (p-1) groups of 9 configured inputs of the device, control block 11 and control object 12, the control block 11 contains n control nodes | l3, n elements OR 14, n elements OR 15, n outputs 16 sig - switching on operation, n outputs 17 of switching off operations, automatic switching on input 18, general switching off input 19 and n inputs of operational signals 20 includant n inputs of operational signals 21 turn off, and the control object 12 comprises n blocks used polnitelnyk 22.

The device works in the following way.

Consider the operation of the control device for the case of sequential completion — a chain of operations, i.e. for item 4. As follows from the first row of the table, for this, all tuning buses need to be given signals A. At the same time, the output of the previous block of the control object is connected through the sequentially connected third elements OR 4 and the first elements And 7 are connected to the second inputs of all subsequent blocks fictions The positive effect is achieved by introducing into the device the groups of elements IE, AND and OR, as well as introducing the group of tuning inputs of the device. 2 Il.

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error messages, for example, the output of block 22. is connected to blocks 1 and 1. In addition, the third input and output of the previous error fixing block are via the serially connected second element OR 6, the second elements AND 3 and the first elements OR 5 are connected to the third inputs of all subsequent error fixing units. For example, block 1 by the third input and output 10 is connected to the third inputs of all other blocks 2, 3 and 4.

The control object is turned on either operationally according to the signals fed to inputs 20i or automatically according to the signal fed to input 18. In the first case, the signals at the outputs of 16 elements OR 14 appear as these - the signals at the inputs 20. In In the second case, the signals at the outputs 16 appear simultaneously.

In the absence of malfunctions in the control unit 11, the switch-on signal of the first operation coming to the output 16 is stored in the error-fixing unit 1. The control unit node 13, by the operation enable signal, outputs the control signal to the control object block 22 and to the error block 1, which is also stored therein. In this case, there is no signal at the output of the error fixing unit 1. After execution by block 22. the corresponding operation from the output of the latter to the node 13 2. of the control unit receives a signal that, when the control object is operated, is switched on by the control unit 13 to form the next control signal at its output.

In the automatic switch-on mode, a signal coming from the output of block 22, to the input of node 13, at the output of node 13 appears a control signal, through which block 22 operates. From the output of the last to the input of block 13, a signal arrives, blocks 22 and 22 objects managed51501059

They are not included in the operation, similar to the inclusion of block 22j. In addition, when the operation is switched on, the turn-on signal from the output of block 22 enters through the OR 4 element on the AND 1 element.

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The l, 1, 1f blocks of the device for fixing the errors of the control device receive signals in the same sequence as

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, 1 error fixation signals are missing.

When any operation is turned off, for example, when the operation is signaled to stop operation from output 17, all the following blocks 1, C are turned off and, consequently, the loss of the control signal from the output of node 13 and the disappearance of all those control signals are not recorded as faults. that correspond to operations, including due to the shutdown of the operation in question. So, when a shutdown signal is triggered at output 1, the signal at the output of node 13j also disappears along with the signal at the output of node 13, because the signal at the output of block 22; 2 disappears. the control object is turned off control node 13z. When the trip signal is turned off at the output 17, all subsequent blocks 3 and 4 of the error fixation are activated,. The control device works similarly when a general shutdown signal arrives at input 19, which through the OR 15 elements arrives at the corresponding outputs 17 of the operation shutdown signals.

The error-fixing units 1 of the monitoring device emit signals in case of the following malfunctions in the operation of the respective control units 13, which distort the considered sequence of signals to these error-fixing blocks:

- let the control node, for example, node 13, give a false signal at the output. Consequently, the control system received a control signal from the output of the node 13 before the arrival of the enable signal of the operation at the output 16. The error-fixing unit 12 causes a signal that detects a fault in the control node 13g;

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- let the control signal disappear at the output of any control unit, for example, at the output of node 13. Consequently, the control signal disappeared at the input of the error-fixing unit 12 of the control device before the shutdown signal for operation 17 /, arrived at this block. The error fixing unit 2 causes the signal registering a fault in block 13.5 and the same signal through the AND, OR, B, IZ, OR 5, and OR 54 elements to turn off all subsequent error fixing blocks so that the latter do not register the loss of control signals as faults. the outputs of nodes 13, 13, caused by the disappearance of signals from the outputs of control objects 22. ,, 22e.

Fault signals at the outputs of the error fixing blocks can only be cleared by the Reset signal received at input 8.

The device for controlling the control unit operates similarly in the remaining variants of the functional connections between the operations indicated in FIG. 2

Claims (1)

Invention Formula 0 five five 0 A device for controlling a control unit containing a group of error-fixing blocks, a first group of elements OR, a first group of elements AND, the input of the initial installation of the device connected to the inputs of the initial installation of error-fixing blocks, the groups whose outputs are the group of output errors of the device, the first input i -ro, i 1, 2, "OS I n of the error fixing block is the i-th input of the first group of monitored inputs of the device intended to be connected to the signal group g of the control of the monitored block, the second input of the first b The error fixing group and the first input of the j-ro element AND of the first group, j 1, 2, ..., p-1, are the second group of monitored inputs of the device for connecting to the group of output outputs including Shi operation of the monitored unit, output j And the first group is connected to the second input (j + 1) -ro of the group error fixing unit, the output of the j-ro element OR of the first group is connected to the third input (j + 1) -ro of the group fixing unit, different what, with the goal of expanding five neither the functional capabilities of the device due to the fixation of malfunctions of the control unit with an arbitrary sequence of operations; the device contains (p-1) groups of elements NOT, (p-1) groups of elements AND, (p-1) groups of elements OR, (p-1 ) OR elements of the second group, where the output of the j-ro block of the group fixing errors is connected to the first input of the j-ro element B1I, the second group, the second input of the first element OR of the second group is combined with the third input of the first block of the group fixing errors and is the first input third group controller device inputs for connecting to the first input of the output group of the control unit operation, the first input of the first element OR of the first group is combined with the second input of (t + 1) -th element OR of the second group and is (t + 1) -th input the third ten 15010598 the device input groups (m 1, 2, ..., n-2), the j-th input of the fourth group of device inputs for connecting to the j-th output group of the outputs of performing the operation of the monitored block is connected to the first inputs jx of the elements OR kx groups, where kj j + 1, j + 2, j + 3, ..., n + 1, the second input of the j-ro element OR the k-th group is combined with the input of the j-ro element NOT (the k-th group and is the JM input k group of configured inputs of the device, the element j-ro of the element OR of the second group is connected to the first inputs of the jx elements AND (the k-th group, the element of the j-ro element And the k-th group is connected to the JM input of the j-ro element OR of the first group, the output of the j-ro element of the NOT k-th group is connected to the second input of the j-ro element AND the k-th group, the output of the j-ro element OR of the k-th group is connected to (j + 1) -M input of the j-ro element AND the first groups. 15 20