SU1318945A1 - Automatic system for checking and malfunction diagnosis of digital units - Google Patents

Abstract

This invention relates to instrumentation technology. The purpose of the invention is to increase the speed of the device. The automated system contains a digital computer including a digital computer processor 1, a data transmission channel 2, a program input unit 3 and a memory unit 4. In addition, the device includes a registration unit 5, a matching unit 6, a conversion unit 7 and a contacting unit 8. New in the device is the execution of the matching unit 6 in the form of synchronization unit 10, address decoder 11, cells 12.1 .... 12.N matching, elements 2I 13.1 ... 13.i, elements ZI I4.1 ... l4. i, D- triggers 15.1 ... 15.1, elements NOT 16.1 ... 16., input block 17 and output block 18. At the same time, the terminals for connecting the inputs of the control object 9 and the contacting unit 8 are connected to the inputs of the conversion unit 7. This makes it possible to exclude switching of the inputs of the control object. 2 Il. c 00 00 CO 4 sd p Kn Figure 1

Description

The invention relates to an instrumentation technique and can be used to test the operability, establish a malfunction and determine the places of their occurrence in electronic digital blocks.

The purpose of the invention is to increase the speed by eliminating the switching of the inputs of the control object.

Figure 1 shows the functional diagram of the device; Fig. 2 is a flowchart for the operation of a digital computer in a device.

The device comprises a digital computer which includes a processor 1 with a single bidirectional data transmission channel 2, a program input unit 3, a memory unit 4, a registration unit 5, a matching unit 6, a conversion unit 7, a contact unit 8 with contacts X ..X. .X.jj (for example, a connector), object 9 controls. The matching unit 6 has a synchronization unit 10, the first and second inputs of which are connected respectively to the first and second control outputs of channel 2, and the output to the control input of channel 2, the address decoder P, the first input connected to the third control output of channel 2, inputs O ... n connected to the inputs-outputs O ... n of channel 2, and N + 1 output connected to the third input of the synchronization unit 10, cells 12.1-12, N matching each of which has element 2I13.1, element ZI. 14. open collector, D-trigger 15.i, and the element is NOT. 16. i with an open collector, the first input of the element 13.i is connected to one of the O., ... n ... N outputs of the address decoder 11 and to the first input of the element 14.1, the output of which is connected to one of the O ... P inputs- outputs of channel 2 and with the input of the D-trigger 15.1, input C of which is connected to the output of element 13.i, and the output of which jporo is connected to the input of element HE 16.1, the output of which is connected to the corresponding input-output of conversion unit 7 and to the second input element 14.1, block 17 input, the input of which is connected to the second input

synchronization unit 10 and with the second Yupu1M output of channel 2, and the output of which is connected to the third inputs of all elements 14.1-14.N; output unit 18, the input of which is connected to the first input of the synchronization unit 10

S

0

five

0

five

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and with the first control output of channel 2, and the output of which is connected to the second inputs of all ZI 14.i elements. Line 19 is connected to one of the O ... P inputs-codes of channel 2.

The device works as follows.

The control object 9 is connected to a contacting unit 8, which provides an electrical connection between the contacts of the control object and the conversion unit 7. The conversion unit 7 ensures compliance of the signal levels of the control object 9 and the matching unit 6. If the control object and the matching unit are made on signal compatible elements (for example, on chips of the same type of logic), the conversion unit is not needed and the control object is connected directly to the matching unit through the contacting unit. The diagnostic program is entered into memory block 4 of the digital computer using program input block 3. In accordance with the diagnostic program, the processor 1 generates stimulating signals that are received through channel 2, matching unit 6, conversion unit 7 and contacting unit 8 to the contact receivers of object 9 of the control. Information from the contacts of the transmitter object 9 of the control enters through the contacting unit 8 and the conversion unit 7 to the matching unit 6. At the right time points, processor 1 reads this information from matching unit 6 and processes it in accordance with a diagnostic program. When detected SRI of a malfunction in the control object On the block 5 of registration a failure message is displayed.

At the beginning of the diagnostic program, the initial installation is performed, i.e. On the inputs of all the HE 16.1 elements with the open collector of the matching unit 6 high levels of signals are established. This is necessary so that the monitored signals from the c-contacts-transmitters of the control object can be freely transferred to the second inputs of the ZI elements. 14.1.

Next, the index j is assigned the value zero (j 0), where j is the sequence number of the signal in the stimulus and test signal tables.

Next, a stimulating signal is outputted to the input contacts of the test object. 4 In parentheses is the sequence number of this signal from the table of stimulating signals.

A monitored signal is entered from the highest contacts of the control object and compared with the i-th test signal. When these signals are not compared, a message about the malfunction of the control object is displayed, and when comparing, the next stimulating signal is output to the control object. If all monitored signals are equal to 10

block 8 contacting the desired contact object 9 control. In the presence of signals at the first and third inputs of the synchronization unit 10, a sync response signal is generated at its output. If a monitored signal is input from the control object 9, the processor 1 sets the signal at the second control output of channel 2. The input unit 17 generates a signal arriving at all the matching 12.1-12.N cells. This signal transmits information from the second input of the ZI 14.1 element.

following test signals, after you-f5 of the previously allocated cell 12.1

the water of the last stimulating signal to the control object (K is the number of signals in the table of stimulating signals) displays a message about the failure of the control object.

All contacts of the control object and the corresponding 12.1-12.N matching cells of the matching 6 block have certain addresses that are contained in the diagnostic program. The output of the stimulating signal to the control object or the input of the monitored signal from the control object begins with the fact that the address code of the desired control object is set at the inputs-outputs of the O ... n channel 2, this code is fed to the inputs 0 ... n of the address 11 decryptor. Next, the processor 1 generates a sync signal, which from the third control output of channel 2 is fed to the input of the address decider 11. By this signal and in accordance with the address code

the signal at the N + 1 output and at one of the 0 ... n.,. N code of the address decoder 11 is set and stored. Thus, the matching cell 12.1 is selected, to which the desired contact of the control object is connected. If a stimulating signal is output, processor 1 sets the code of the stimulating signal at the inputs of the outputs O ... n of channel 2 and the signal at the first control output of channel 2. Output unit 18 generates a signal arriving at all of the matching 32.1-12.N cells. This signal records and memorizes information from one of the O ... P inputs-outputs of channel 2 to the D-flip-flop of the previously allocated cell 12.1 matching. From the output of the element NOT 16.i this information comes through the conversion unit 7.

block 8 contacting the desired contact object 9 control. In the presence of signals at the first and third inputs of the synchronization unit 10, a sync response signal is generated at its output. If a monitored signal is input from the control object 9, the processor 1 sets the signal at the second control output of channel 2. The input unit 17 generates a signal arriving at all the matching 12.1-12.N cells. This signal transmits information from the second input of the ZI 14.1 element.

0

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five

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Vani on one of the O ... P inputs-outputs of channel 2. In the presence of signals on the second and third inputs of the synchronization unit 0, a sync signal is generated at its output.

Invention Formula

An automated system for monitoring and diagnosing malfunctions of electronic digital units, comprising a digital computer, a registration unit, a matching unit, a conversion unit, the inputs of which are connected to terminals for connecting the outputs of the control object of the contacting unit, the input of the registration unit connected to the digital computer output, In order to improve speed, the terminals for connecting the inputs of the control object of the contacting unit are connected to the inputs of the conversion unit, the matching unit contains the synchronization unit, the decryptor address address, input block, output block, N matching cells, where N is the number of outputs of the control object, each of which contains element 2I, element ZI with open collector D flip-flop and element NOT with open collector, the first input of each element 2I connected with. corresponding first outputs of the address decoder and with the first input of the ZI element with an open collector, the output of each of which is connected to the corresponding inputs-outputs of the digital computer, with the first inputs of the address decoder and with the information input of the corresponding D-trigger, the synchronizing input of which is connected to the output of the corresponding element 2I The second input of each of which is connected to the output of the output unit, the input of which

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connected to the first control output of the digital computer and the first input of the synchronization unit, the second input of which is connected to the second control output of the digital computer and the input block of the input, the output of which is connected to the second input of the OI element with an open collector, the third input of which is connected to the output element is NOT with an open collector.

With Vmd)

189456

with the corresponding input of the conversion unit, the output of the D-flip-flop is connected to the input of the element NOT with an open collector, the synchronization output of the digital computer is connected to the second input of the address decoder, the second output of which is connected to the third input of the synchronization unit, the output of which is connected to the control input of the digital computer.

Since you) (od J

Initial (installation

Malfunction report

object control

Report on the inspection object's control

FIG. 2

Compiled by I.Pom Ksheva Editor A.Gratillo Tehred M.Khodanych Corrector I.Muska

Order 2506/39 Circulation 730 Subscription

VNIIPI USSR State Committee

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

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

The claims are aimed at increasing the speed of an automated electronic digital block monitoring and fault diagnosis system comprising a digital computer, a registration unit, a matching unit, a conversion unit, the inputs of which are connected to terminals for connecting the outputs of the monitoring object of the contacting unit, the input of the registration unit is connected to the output of the digital computer, characterized in that, the terminals for connecting the inputs of the monitoring object of the contacting unit are connected to the inputs of the conversion unit, the matching unit contains a unit with synchronization, address decoder, input unit, output unit, N matching cells, where N is the number of outputs of the control object, each of which contains a 2I element, a GI element with an open collector, a D-trigger and an element NOT with an open collector, the first input of each element 2and connected to. the corresponding first outputs of the address decoder and with the first input of the ZI element with an open collector, the output of each of which is connected to the corresponding inputs and outputs of the digital computer, with the first inputs of the address decoder and with the information input of the corresponding D-trigger, the synchronizing input of which is connected to the output of the corresponding element 2I , the second 'input of each of which is connected to the output of the output unit, the input of which the output-sync5 is connected to the first control house of the digital computer and the first input of the downgrade unit, the second input of which with the second control output of the digital computer and the input of the input unit, the output of which is connected to the second input of the ZI element with an open collector, the third input of which is connected to the output 1318945 6 with the corresponding input of the conversion unit, the output of the D-trigger is connected to the input of the element NOT with an open collector, the synchronization output of a digital computer is connected to the second input of the address decoder, the second output of which is connected to the third input of the synchronization unit, the output of which is connected to