SU1312581A1 - Device for checking time of program execution - Google Patents

Abstract

The invention can be used in digital computing machines.x (digital computers) operating in real time in automatized object control systems. The aim of the invention is to increase the diagnostic capabilities of the device. It allows to form

Description

If cKFiiaji is restarted to restart the digital computer when the program is violated, and if the restoration of the normal course of liporpaMMb did not occur, it generates a signal for the digital computer to be inoperative. The device contains a counter 2, in which the code of the permissible program execution time is entered. When it is filled, the interrupt signal CM.M is generated and the counter 4 of the digital computer begins to fill. The digital computer, after processing the interrupt, issues a control command at input 25, according to which the signal allocated by decoder 24 at output 21 nulls counter 4. If the control command from digital computer is not received, overflow counter 4 at output 11 of the mouth1

The invention of otto-itts to computing, in particular to digital computing maps (digital computers), working in the real-time mode in automated control systems of objects.

The aim of the invention is to increase the diagnostic capabilities of the device by providing control over the unpaired teams of the program.

Tsa FIG. 1 shows a functional diagram of the device d, monitoring the progress of programs; in fig. 2-5 time diagrams. According to your device.

The device contains a generator of 1 impulses, connected to counter 2 and through element I 3 to counter 4. Information input of counter 2 is used, sent to input 5 of the code of the allowable operating time of the device program. The output of counter 2, which is the output of the time stamp b of the device, controls the triggers 7 and 8, the outputs of which are connected to the elements 3 and 9, respectively. Element And 9 and the output of counter 4 through the element OR 10 are connected to output i 1 of unresponsive programming device 4 and to the output of counter 12, the output of which is output 13 of the fault of the device's digital computer. 14 reset and 15 "The citation is on the device is connected through the OR 16 element to the installation inputs of counters 2, 4 and 12 and the trigger 7, 8 and 17. The trigger 17 through the AND 18 element of the terminal to the output 19 of the initial start-up of the device. The operation of the circuit is controlled by signals; - output1И5 20-23 den. Of the delimiter 24 in sOO1 zetst them with the com; oom, not received, in the L: 3 lod-g team. Output 20 block; .;. e:; H oator 24 and entrance 26 of the block | Ovki device through the element OR 27 but, h - key ::; i. elements 3 and 9. The output 21 of the sign of the operation of the decimator 24 is connected

The signal of restart 11 appears, 3M, which is entered into the counter 12, the owner - 11:; with the counter BEFORE two. After restarting the KorgPolp command, the command did not arrive again, then by a repeated signal, a failure of starting on the device slot 13 causes a fault signal of the digital computer. IG; - an unauthorized control command from a digital computer, for example, when cycling, the signal from the output 21 of the decoder 24 through the AND 9 element arrives at the output 11 of restarting. The trigger 17, interrogated via the AND 18 element, can allocate the initial cycle of the device operation on power-up or resetting the CV. 5 il.

0

to the inputs of the initial installation of counters 4 and 12, the installation inputs of the triggers 7 and 7 and through the element 28 of the trigger delay 8, the output 22 of the initial start indication polling to the element And 18, and the output 23 of the digital computer fault lock to the input of the initial installation of the counter 12.

A device for controlling the time of program execution works as follows.

During the initial start-up of the digital computer to turn on the power or by pressing the button “Reset on the operator’s console, the signal of the initial installation, but which

5 through the OR element 16 is set to "About Counters 2, 4, and 12, triggers 7 and 17, and Trigger 8 is set to" 1. At the end of the signal at the start of the i-th installation, the counter 2 is filled with signals from the i-generator of 1 pulses and after a time, determined by its size, the output signal of the device’s time stamp 6, the output signal 6, ayushiy is transferred to the counting by 4 and pulses from generator 1 through element 3.

5 The overflow of counter 4 generates a signal at its output, 1 to 1 through the OR element 1 O to output i 1, is the output to restart the device program. On the signal; 1y "Restart of the program of digital computers oppaiHHBaeT state of trigger 7 by

0 signal at the output 22 of the decoder 24 and the element And 18. With a single trigger state, which indicates a pachno.m start-up, the digital computer has executed the initialization program of the control system and goes to the control program of the object.

5CW MX when performing a certain program at the input 5 of the device gives the time code, which is entered into the counter 2,

The time code stored by counter 2 determines the allowable paooib time of the program when solving a specific task or the monitoring period of the digital computer. By filling the counter with 2 signals, a pulse time signal is generated at the output of the pulse generator 1, which enters the interruption node of the digital computer and sets the trigger 7 to the state "1, and the trigger 8 to the state" 0, the counter 4 begins to fill. timestamp goes to interrupt handling program. One of the commands of this program issues to the device for monitoring the progress of the program a specific code at input 25 of the command code, which is allocated by decoder 24 at output 21 and is a "Sign of operation. The filling time of the counter 4 is selected by the large processing time of the interrupted DVM by the time stamp. The "Symptom of operation" signal sets to "About triggers 7 and 17, zeroed counters 4 and 12, and through delay element 28 sets" 1 trigger 8. "The delay time of delay element 28 is selected by the longer duration of the" Symptom of operation, while trigger 8 state “O prohibits the passage of the signal.” “A sign of operation through the elements AND 9 and OR 10 to the output 11 of the device (Fig. 2). Thus, upon receipt of a code for signal generation, the "Symptom of operation" ends the program control cycle.

In case of violation of the course of the program, caused by the fact that the digital computer does not execute the timestamp processing program, the command to generate the signal “No sign of operation is received. In this case, the overflow signal of the counter 4 through the element OR 10 passes through the output 11 of the restart of the device program (Fig. 3). At the end of the program restart signal, the DVR goes to the starting address and executes the initial startup program. In this program, the DVM co.map polls trigger 17 via element AND 8 using the signal at output 22 of the decoder 24. The state "About trigger 17 set by the signal" Work indicates that the DVR has already worked on the object control program and there was a violation of the course of the program. It is necessary to parry the recorded irregularities in the course of the program by executing the object management restoration program.

A signal to restart the program is recorded in counter 12, which is a counter up to two. Counter 4 after issuing a signal nepeiio.teni zapo. sew repeatedly. If during the time of its filling the signal does not come "Sign of operation, i.e., the program does not restore normal course, then the signal" Restart of the program is generated by the overflow signal at its output. This signal at the output of counter i 2, which is the output 13 of the fault of the device's digital computer, a signal appears (Fig. 4). The fault signal of the digital computer enters the console to signal the operator of the faulty digital computer and the stop circuit of CB.1 in order to avoid unmanaged states of the digital computer, in addition, the fault signal can be used for automatic opening. DVI channel channel in redundant or multiprocessor systems.

In case of violation of the course of the digital computer program, due to the fact that the digital computer loops on the program section, which includes the command for issuing the sign of work,

5, the "Sign of operation through the AND 9 element, passing through which the state of" 1 triprer 8 resolves, and the OR 10 element passes to the output 1 1 of the device program restart (Fig. 5).

The operator with the first control can, if necessary, block on the input 26 a device for monitoring the program progress. Similarly, you can block the device for controlling the program progress by the command on the program of the digital computer via output 20

5 of the decoder 24. The blocking signals from the output 20 of the decoder 24, as well as the output 23, blocking the operation of the counter 12, allow for automated testing of the device.

thirty

Form u. and invention

five

0

Device d, 1 control of the program execution time, containing two time counters, the generator is an imp. decoder, two triggers, three AND elements, two OR elements, and the pulse generator 1 output 1 is connected to the counting input of the first time counter, the input of setting the allowable device operation time is connected to the information input of the first time counter, the overflow output of which

0 is the output of the time stamp of the device and is connected to the installation input in the “About the first trigger”, the direct output of which is connected to the first input of the first element I. the common reset inputs and the power on of the device are connected respectively to the first and second inputs of the first OR element, the output of which is connected to the input of the initial installation of the first counter, with the first input of the installation in “About the second trigger and the first input of the installation to“ 1 of the first trigger, the input of the device command code is connected to the input of the depot. the first output of which is connected to the second input of ycTaiiC i .Kif to “About the second trigger and to the second input of iepBoro evil. And, the second output of the deshfratora is connected to the first input of the second element I, the output of which is in ;: the course of the initial start-up of the device, that is, and that the third t | fi; iri- cp. -. ,, delay ment, with troths; x1) l before prefixing and gol, blocking devices of ga cc dime n1 h photo.Ket Stevenns; with the first; 15t;) p) m input BTODfH o elsme1; that OR, the pykhod which is connected to the third input nepBOi o edemno nta AND and nepiUjiM third input1 about the element And; the first output of the decoder is connected to the installation of “About the third trigtera”, with the first input of the installation to “About the second counter, with the input of the third counter to the“ About the third counter and delay element with the second input; the settings in “1 of the first trigger, the generator output and the direct output of the second trigger are connected respectively to the second and third inputs of the third element I, the output of which is 21

FIG 3

7

pen with a counting input of the second counter, the output of the first element OR is connected to the vropbJM input of the installation in the "About the second counter, the installation input of the" 1 third G :): d and the second input of the installation in the "About g: 1 network counter, overflow output - at.: | The output of the device malfunction, the output of the first element I is connected to the first input of the third element OR,; -, 1 input Kcvfoporo is connected to the counting input of the third –o counter and is the output of the device’s program not restarting, the overflow output of the second counter OR, pr - Moii B11 | stroke I of the trigger is connected to the second exit of the second element, And, the fourth output of the depigraphor is connected to the input of the 1st setting of the rpeTi ero counter.

. „™ ii.

.x :: ii:

11dg IP | 1st

Claims (1)

Claim A device for monitoring the execution time of programs containing two time counters, a pulse generator, a decoder, two triggers, three AND elements, two OR elements, the output of the pulse generator being connected to the counting input of the first time counter, the input of setting the allowable device operating time connected to the information input the first time counter, the overflow output of which is the output of the device’s timestamp and is connected to the installation input at “0” of the first trigger, the direct output of which is connected to the first, the input of the first second AND gate, a master reset input and a power-device are connected respectively to first and second inputs of first OR. the output of which is connected to the input of the initial installation of the first counter, with the first installation input at “0” of the second trigger and the first installation input at “1” of the first trigger, the input of the device command code is connected to the decoder input, the first output of which is connected to the second installation input in "0" of the second trigger and with the second input of the first element And, the second output of the decoder is connected to the first input of the second element And, the output of which is the output of the initial start-up of the device, characterized in that, in order to increase diagnostic capabilities f bones. c "; with d c; 'ye' ^g in introduced the third snowman, the third" trigger. third OR element and delay element. moreover, the third output of the decoder and the Input, the device locks are connected with the first input of the second element OR, the output of which is connected to the third input of the first element And and the first input of the third element And,. · the first output of the decoder is connected to the input installation in “O” of the third trigger, with the first input of the installation in “0” of the second counter, with the first input of the installation in “0” of the third counter and through the delay element with the second input of the installation in “1” of the first trigger, generator output and direct output second trigger connected respectively, with the second and third inputs of the third AND element, the output of which is connected to the counting input of the second counter, the output of the first OR element is connected to the second installation input at “0” of the second counter, the installation input “I” of the third trigger and the second installation input to “0 »Its counter, the overflow output of which is the output, device malfunctions, the output of the first AND element is connected to the first input of the third OR element, the output of which is connected to the counting input 10 of the third counter and is the restart output for Ranma device, the second counter overflow output coupled to a second input of the third OR gate, a direct output of the third flip-flop coupled to a second input of the second AND gate, the fourth decoder output connected to the input initial setting of the third counter.