SU1160369A1 - Programmed control device with self-check - Google Patents

Abstract

SOFTWARE CONTROLLER WITH SELF-MONITORING, containing software blrk, according to the number of actuators control units, each of which is connected to the output of the power source, and the output to the first input of the corresponding key and through the corresponding offset element to the second input of the corresponding key and to the input of the corresponding actuator, the control unit associated with the first inputs with the outputs of the keys, characterized in that, in order to increase the reliability of the device in it, The synchronization unit, the decoder, the group of the first elements AND, the second and third element Ij the comparison unit, the isolator element, each control unit contains the fourth, fifth and sixth elements AND and the trigger, and the control unit the first and second electrons; comparison cops, encoder, S & M Mbfe elements And signal: blo. Connected by the first inputs to the corresponding first inputs of the control unit and to the first inputs, respectively. the first inputs of the comparison, and the second inputs to the corresponding second inputs of the control unit and to the first input of the corresponding seventh element I, connected by an output to the input of the encoder, and the second input - to the output of the corresponding Derv comparison element, connected by the second input to the output of the second element comparison j associated with the first input with the bus Off the program block and with the first input of the third element and, and the second input with the bus Realization of the program block with the first and with the second inputs (L correspond of the second and third elements And through the element of isolation - with the output of the synchronization unit, with the synchronizing input of the comparison unit and with the first inputs of the first elements - AND, connected by the second inputs to the first info | Ormation inputs of the comparison unit and to the information output of the software &;amp; block, and outputs to the inputs of the decoder connected to the outputs of the corresponding second inputs of the block; about the contact {) ol with the first inputs of the fourth And elements and the first inputs of the fifth And elements connected second entrance and to the output of the third AND gate, and the output - to the first input of the corresponding flip-flop, a second input associated with the output. the corresponding fourth element And, and the direct input - with the first input of the corresponding sixth element And connected by the second input to the power supply bus of the control unit.

Description

and the output to the OUTPUT of the corresponding control unit, with the second input of the fourth And elements connected to the output of the second And element, and the outputs of the encoder with the second

the information inputs of the comparison unit connected by the output to the input nporpaNMHoro of the bus-connected unit Enabled with the second input of the second element I.

The invention relates to automation and can be used to create automated systems for determining technological processes. A control device is known in which an object protection block by readiness criteria is used to check the correct operation of the program input block and the condition of the decoder, including an analyzer, a control object simulator and three device readiness monitoring nodes. However, it provides for control operations. only a preparatory period, in a number of cases a few hours or days before the implementation of technological work, and therefore those faults in the device circuit that Oguta occur during this period of time, remain undetected since during vtolneii techno logical operations for the control commands to control the passage isyolnitelnme mechanisms not vedets that is a drawback of the device. The closest technical solution to the invention is a device for controlling and monitoring the health of electric circuits, comprising a power source, the output of which is connected to one of the inputs of the operating mode selection unit, the other input of which is connected to one of the outputs of the program block, the control blocks, the first inputs of which connected to the corresponding differential outputs of the program block, and the second through the power buses — to the output of the mode selector; elements are shifted with keys according to the number of actuators and a control unit whose output is connected to the input of a software unit, its inputs to the outputs of keys, the first inputs of which are connected to the inputs of the corresponding bias elements and the outputs of the corresponding control units, and the second inputs of the keys are connected to the outputs of the corresponding bias elements and to the inputs of the corresponding executive mechanisms 21. In the device, the control of the correct functioning of the program block and the operability of its circuit elements is carried out on the basis of feedback signals generated by Throne of the keys at the time of implementation of the control commands. Therefore, malfunctions in the device circuit associated with the distortion of these commands can be detected only after they are issued to the control object, when it is not possible to correct the detected error. Thus, a disadvantage of the known device is the inability to control the health of the transmission path of the control commands to the control units of the actuators prior to their implementation. The aim of the invention is to increase the reliability of the device. The goal is achieved by the fact that, in a device for programmed control with self-control, which contains a software unit, according to the number of actuators, control units, each of which is connected by the power bus to the output of the power supply, and by the output to the first input of the corresponding key to the second input of the corresponding key and to the input of the corresponding 3. the associated actuator, the control unit J associated with the first inputs — with the outputs of the keys; a synchronization unit, a decoder, a group of the first elements AND, a second and a third elements AND, a comparison unit and an isolation element are entered, each control unit containing a fourth, n The second and sixth elements are And and the trigger, and the control unit is the first and second elements of the comparison encoder, the seventh elements are And and the signal board connected to the first inputs of the first control unit and the first inputs of the first control unit. ENTOV comparison and inputs - a second sootvetstvuyupschm. to the inputs of the control unit and to the first V input of the corresponding seventh element I, connected by an output to the input of an infrasor, and the second input with the input of the corresponding first one. Comparison element, Connected by the second input to the output of the second comparison element associated with the first input to the bus. The software block is off and the first input is three. of the second element And, and the second input from the name Realization of the program of a block, the first and second inputs of the second and third element And and through the development element, - with the output of the synchronization unit with the synchronization input of the first And the connected the second inputs to the first information inputs of the block by comparison to the information outputs of the program block, and the outputs to the inputs of the decoder connected by the outputs with the corresponding second inputs 1 "of the Control unit with the first inputs of the fourth elements ntov And with the first inputs of the five elements And connected with the second inputs to the code of the third element; and the output to the first input of the corresponding: corresponding trigger connected by the second input to the output of the corresponding fourth element I, and the direct output to the first input of the corresponding sixth element I connected to the power supply of the control unit and the external input - to the output of the corresponding control unit, with the second input of the quarters of the elements AND being connected to the output of the second element AND, and the outputs 94 of the encoder with the second information inputs of the comparison unit connected by the output to the input of the program block associated with the bus Included with vt.orym input of the second AND element .. Fig. 1 shows a block diagram of the device; in fig. 2 - functional diagram of the program block; in fig. 3 is the same, the control unit, in FIG. 4 - the same, comparison block; in fig. 5 - the same control block, in FIG. 6 is the same as the control panel; FIG. 7 is a plot of the voltage applied to the signal board of the control unit. The device contains software block 1, blocks 2, - 2 controls, actuators 3 - 3, power source 4, elements 51 - 5 "offset, keys 6 n control unit 7, group of first elements And, second element And 9, decoder 10, synchronization unit 11, isolation element 12, comparison unit 13, third element AND 14, first 15 and second bus ISj. sign commands off, on, bus .16 Implementing commands. In the proposed embodiment, software block 1 (Fig. 2) contains a pulse generator 17, eighth elements And 18, - 18j, counter 19, first elements 20 ;, 20 J, ..., 20-14 matches, the number of which is equal to the number of blocks 1 of control commands, second elements 21, 212 21 razkki, second encoders 22., 22, .... 22, second triggers 23, 23, .... according to the number of bits of the command word, and ninth the elements 24, 24, ...,, the control panel 25, the third trigger 26, the elements 27 and 27 of the time delay and the switching element 28.. The control blocks 2 (Fig. 3) include the fourth 29, and the fifth 292 And elements, the first trigger 30 and the sixth And 31 elements. The code comparison block 13 (Fig. 4) includes the tenth elements And 32, 322, ..., 32 ", elements, 332, .. Comparison of binary codes and eleven elements And 34. The Epok control 7 (Fig. 5) contains the signal board 35, 35x, ..., 35", including the twelfth, elements-I 36, Zbg , the resistor 37 and the signal transparency 38, the first elements 39, 39, ..., 39 "of the comparison, the seventh elements AND 4U,, 40, ..., AOj ,, the encoder 41 and the second element 42 of the comparison. The control panel 25 (Fig. 6) contains a key 43 for selecting the operating mode, fourth trigger 44, buttons 45, 452 n code dial 46 fifth triggers 47, ..., 47 "Espfrator 48, time delay element 49 and thirteen And 50 elements The device works as follows. The program block 1 is started up by pressing the key 43 (in the direction of the AVT) located on the control panel 25. This switch from trigger 44, as a result of which the voltage is removed from its inverse output (from common bus code 46) and a potential signal is applied to the inputs of the elements 24, 242, 24.2 liters, the latter opens and voltage pulses The output of the generator 17 begins to arrive at the input of the counter 19. Each of the elements 20., 20 2 - V coincidence is tuned to a specific time setting, after which it generates a voltage pulse at its output arriving at the input of the corresponding cipher 22, where it converts in code coma NDU, indicating its address, for example, by the serial number of the control unit 2, the state of which is to be changed, and the execution flag. The address on the information, for example, in the form of a binary mt6o binary-decimal code, goes to the information inputs of the 23 trigger signs — to the input of one of the triggers 23-, the control voltage impulse from the output of the element 20 is transmitted to the inputs of the elements ISj and 27, through cotsfjh, he alternately switches the tDMHy 16 (command implementation), and then after the element triggers; 27 delays - to the trig recording bus,, .., 23ijj (via element 23 and 18) Upon the occurrence of this impulse, the triggers whose information inputs have electrical signals corresponding to, for example, logical 1, are disabled in one state and the most memorized generated code command. Last, through the open elements I 24, 242, .... 24 2, is transmitted to the outputs of the program block 1 and further to the first inputs of the elements 8. 8, 9, 92 and to the first inputs. Address information from the outputs of the elements And 8 8 goes to the outputs of the decoder 10, where it is converted into a single signal, excited with the frequency settings of the synchronization unit 11 (multivibrator) at one of its outputs. This pulsating signal is addressed to the first inputs of elements AND 29.,, 292 of the corresponding control unit 2 and further to one of the second inputs of the control unit 7. The latter, depending on the sign of the generated command, processes the incoming signal as follows. If recorded with triggers 23 recorded with triggers. , 23, ij, ..., 23a 2 the command is intended to turn on any actuator, for example 3, the signal c. Of the corresponding first input of block 7 is addressed to the first input of the AND element 40 and through the element U 36j to the signal transparency 38. , according to which visual control is exercised over the supply of operating voltage to the actuator 3.,. This banner intermittently lights up with the frequency of the setting of the synchronization unit 11 (multivibrator) (section t., - tj, Fig. 7), warning the operators of the arrival of the next control command to the unit 2,. As for the element AND 40 .. it is in the open state, since the signals at the inputs of the comparison element 39 are missing (coincide) and a logical 1 is formed at its output. Therefore, the control signal of the corresponding first input of block 7 is transmitted to the first input of the encoder 41, is converted into an address code and transmitted for cpaia to the second information input of block 13. Comparison of codes in block 13 takes place with a fully functional translation scheme of the control command in the section Outputs of the program block - input of block 2, control,

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Switching unit 2 to the operating state is carried out at the time of the formation of the next control command in program unit 1. In this case, the voltage pulse from the output of the corresponding element 20.,. . ., 20 matches through the decoupling element 21, ..., 2L and the element 18 come to the bus 16 of the command implementation, as a result of which the element 9 opens and an electrical signal appears at the input 15 on. In block 2, the address and indicative signals are summed by AND 29, switching the trigger 30 to one and thereby opening the element 31. An electric current appears in the circuit of the actuator 3, under the action of which it is transformed into a working state 5 bias creates a voltage drop, opening the electronic key 6.,. The first input of the control unit 7 receives a feedback signal confirming the activation of the Executive Mechanism 3. where it is transformed into the address code and again transmitted to the unit 13 to monitor the execution of the command. Namely: on element 39 it is compared with a single signal transmitted from output 16 through element 42 to another input of element 39 and the logical element is formed at the output of the latter. And 40 continues to remain open (the signal at the first input of the control unit 7 is present before the implementation command ) and therefore the output code of the encoder 41 address code remains unchanged.

After a period of time equal to the setting of the delay element 27, the element 18 is closed, and the element tS is revealed, which next modifies the state of the circuit: the voltage of the 16 implementation decreases, the triggers 23, ..., 23 ", a new code command is recorded, the flow of which to the corresponding control unit 2 is controlled automatically and visually in a specified sequence, the transparency 38 for the activation time of the actuator 3 remains energized

through the damping resistor 37 and lit.

03698

for example, in polnakala (part tj - t fig. 7).

If recorded with the flip-flops 23, .. ,, 23 (the 2nd regular command is intended to turn off any actuator, for example, 3 ,, then the control unit 7 converts it into an address matching code as follows: the signal to

10 the output of the comparison element 42 is equal to logical 1, since the voltage from the output of the block 1 trigger (output 15) is applied to one of its inputs; a signal at the output of an e-meit 39 comparison, related to the first control channel,. also equal to logical 1, since the first input of block 7 at this time receives a voltage from the output

20 (electronic) key 6; element E40 :, opens with the frequency of adjustment of the multivibrator 11 due to the arrival at the first input of an address signal from the output of the block in

5, the time intervals corresponding to the open state of the AND element 40, the output code of the encoder 41 generates an address code, which is transmitted for comparison to block 13-, the pressure on the banner 38 changes as shown in FIG. 7 (section t. - t), giving its glow a specific color and thus warning the operators about the receipt of a control command to block 2 with the On flag; at the moment of realization of this command, the signal from the bus 16 arrives at the second input of the comparison element 42 and a logical Oj is formed at its output after de-energizing the actuator 3, turns it off. with electronic key 6, as a result of which an electrical signal is removed

.f from the first input of block 7, but the signal at the output of the comparison element 39 continues to remain equal to logical 1, and therefore the AND 40 element remains open (until the implementation command is removed); the address code at the output of the encoder 41 remains unchanged, which provides automatic control of the execution of the command by the block 2.

5 If the address codes received on the first and second groups of inputs of block 13 were not compared for any reason, for example, due to the absence of

91

the feedback signal from the corresponding key 6, the element 34 is closed, and at its inverse output, a release signal is generated, which is transmitted to the input of the program block 1 and then through the delay element 27, the required inertia of the control unit 2 and, for example, keys 6 to the entry zeroing trigger 26. The latter closes the AND elements 18-, tSj, as a result of which the counter 19 stops counting the time and excludes the recording of the new command in the triggers 23, ...., 23d. The process control is suspended and can be continued by clearing the fault by closing the switching element 28.

To switch the device to manual mode, the state of trigger 44 is changed, for example, by pressing key 43 towards the control knob located on the console .25. , . ./: At the same time, the signal from the second inputs of the And 18., 24, ..., 24-2 elements is removed, thereby excluding the program block 1 from operation, and the voltage is applied to the common bus of the dial pad 46, for which - or the actuator presses the three buttons 45., ..., 45jp - one by one in the high, middle and high bits - so that the combination of the numbers they designate corresponds to the sequence number of the actuator to be activated in the decimal

60369 10

number system. Dialed code-. Your team is remembered for 4Z triggers. , ..., 47 and through p. Ifrator 48 is addressed to the output of program block 1. The operator of the console 25,

making sure that the code is set correctly by intermittent lighting of the corresponding transparency on the scoreboard 35, implements the command by pressing

10 keys 453J. In this case, the element 50 is opened and a voltage pulse is excited at the output 16, and after a period of time equal to the setting of the element 49, bb15. The triggers 47, ..., 47, drive the console circuit 25 to the initial state. To turn off any actuator, it additionally presses the 45e1 key.

Thus, the introduction in the DEVICE of the warning signaling the address of the arrival of control commands, firstly,

25 its reliability due to the control of the serviceability of the translation path of the command signals to the blog control before the commands are implemented, and secondly, it allows the operators more control to monitor the progress of the process and change its functional parameters, and if necessary, intervene in in order to prevent rotation in the object of control of mutually contradictory commands. In addition, the presence of such an alarm eliminates the marriage by the staff when managing

4Q object from the operator's console.

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Claims (1)

DEVICE FOR PROGRAMS- - MANY CONTROLS WITH SELF-CONTROL, containing a software block, according to the number of actuators, control units, each of which is connected to the output of the power supply by the power bus, and to the first input of the corresponding key, and through the corresponding bias element, to the second input of the corresponding key and to the input the corresponding actuator, a control unit connected by the first inputs to the key outputs, characterized in that, in order to increase the reliability of the device, a synchronization unit, a decryptor are introduced into it Ohr, the group of the first elements of And, the second and third element of And, the comparison unit, the isolation element, with each control unit containing the fourth, fifth and sixth elements of And and the trigger, and the control unit - the first and second. comparison elements, an encoder, seventh AND elements and a signal board connected by the first inputs to the corresponding first inputs of the control unit and to the first inputs of the corresponding first comparison elements, and the second inputs to the corresponding second inputs of the control unit and to the first input of the corresponding seventh element And, connected by the output to the input of the encoder, and the second input - with the output of the corresponding first comparison element connected by the second input to the output of the second comparison element, connected by the first input to No '' The program block is switched off with the first input of the third AND element, and the second input with the bus comparing with the first inputs of the first AND elements connected by the second inputs to the first information inputs of the comparison unit and to the information outputs of the program unit, and the outputs to the inputs of a decoder connected by the outputs to the corresponding by the second inputs of the control unit, with the first inputs of the fourth fourth elements AND and with the first inputs of the fifth elements AND connected by the second inputs to the output of the third element AND, and the output to the first input of the corresponding trigger connected by the second input to the output of the corresponding fourth element and And, with a direct output - with the first input of the corresponding sixth AND element connected to the second input • to the power supply bus of the control unit, and the output - to the output · of the corresponding control unit, and the second input of the fourth elements AND is connected nen with the output of the second element And, and the outputs of the encoder with the second information inputs of the comparison unit, connected by the output to the input of the program unit connected by the bus Enabled with the second input of the second element I.