SU1388870A1 - Device for checking information - Google Patents

Abstract

The invention relates to automation, computing and can be used in diagnostic systems to monitor the sequence of digital data. The invention makes it possible to increase the reliability of a device by displaying only erroneous information. The device displays with block 2 a mismatch of the address part of the word with a constant or a mismatch of the information part of the word with none of the reference values, stored in block 6 of the memory. The device contains a data input unit 1, an indication unit 2, a bitwise comparison unit 3, 4, a trigger unit 5, a memory unit 6 and a control unit 7 executed on register 8, AND elements 9, 10, 13, 14 and HE elements 11 12. Gil. about "(L

Description

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The invention relates to automation, computer technology and can be used in diagnostic systems and data monitoring in automated processing.

The purpose of the invention is to increase the reliability of the device by indicating only erroneous information.

The drawing shows a functional scheme of the proposed device.

The device contains data input unit 1, display unit 2, first 3: And the second 4 bit blocks are compared, trigger block 5, memory block 6, control block 7 executed on register 8, first 9 and second 10 elements And the first 11 and the second 12 elements are NOT; the third is 13 and the fourth 14 elements I.

The device works in the following way.

Before the device starts operation, when the next word of digital data enters the input unit 1, the device is reset: after the first output of the unit 1, the register 8 and the triggers are reset, after their zeroing, the first word of the reference data is fed From the memory unit 6 . When ha arrives, the word input unit 1 is extracted from the sequence of digital data by selecting the address part and the information part of the word Digital data. The informational part of the word. Matched in block 3 with the standard value, stored in the first tripex of block 5, and the result of the comparison is entered in the first bits of the register 8. The address part of the word is matched in block 4 with the constant stored in the triggers of blocks 5, and the result of the comparison is entered in the second) register register 8.

When the controlled bits of the word coincide with the reference bits of the pairs in the corresponding outputs of block 3 and 4, single signals are formed,) S otherwise, zero signals

In case of discrepancy of the address part of the word with a constant, 1 is output: Corresponding indication of the discrepancy by the display unit 2. If the address of the word word coincides with the constant, but the information part of the word does not match with the initial reference value recorded in block 5 of the triggers, it is written into the block

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5 triggers of the next reference value from block 6 and the described comparison of the information part of the word with the reference value is repeated. After the last reference value has been recorded, block 6 outputs a single signal to the second input of the AND 14 element.

If the information part of the digital data word has not been compared with one of the reference values, then it compares with the corresponding indication that the display unit 2 does not match. If the information part of the digital data word was compared with one of the reference values, the recording of the reference values in trigger block 5 stops until the next word of the digital data appears, after which the device is reset, and its operation is repeated as described.

Thus, indication by block 2 is performed only if the address part of the word does not match the constant or if the information part does not match any of the reference values stored in the block.

6 for tees that improves the accuracy of control information.

Claims (1)

Invention Formula An information monitoring device comprising a data input unit whose inputs are device inputs, the first output of the data input unit is connected to the installation input of the trigger unit, the first element NOT and the display unit, characterized in that, in order to increase the reliability of the device Comparison blocks were introduced, And elements, a memory block and a second element NOT, the second and third outputs of the data input unit connected to the corresponding 1–5 first inputs of the first and second comparison blocks, respectively, the outputs of which are connected with the corresponding first and second information inputs of the register, the first and second outputs of the register are connected to the corresponding {their inputs of the first and second elements AND, the output of the first element AND is connected through the first element NOT to the first input of the third element And, the output of the second element And connected 313888704 directly to the second input of the fourth element I, the output of the third element I and through the second fourth element I connected to the element NOT to the first input of the block the second input of the display unit, indication, the output of the third element and the second outputs of the block of the I trigger are connected to the corresponding fourth input the second of the AND element and the control input by the input blocks of the first and each memory respectively, the first and second outputs of the second comparison block, the memory installation block are connected to the corresponding inputs of the register a and a memory block but with the corresponding information Q are combined and connected to the first inputs of the trigger block and the second input of the data input block.