SU1439654A1 - Device for training operators - Google Patents

Abstract

The invention relates to automation and computing, in particular, to the technical means used to train operators in the problem of localizing faults in

Description

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Dioelectronic equipment. The purpose of the invention is to expand the didactic capabilities of the device while increasing the objectivity of controlling the level of operator training. The device contains the operator's remote control 1, a malfunction unit 2, information outputs connected to the equipment being serviced, comparators 3, AND 4 elements, OR 5 element, delay element 6, time counter 7, alarm node 8, response input node 9. A new device is that. In the operator console 1, an error counter 13 is inserted, the setup input of which is connected to the output of the control switch 11, and the response input node 9 is a pulse

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The invention relates to automation and computing, in particular, to technical means used to train operators in the localization of inconsistencies in electronic equipment.

The aim of the invention is to expand the didactic capabilities of the device.

FIG. 1 shows a block diagram of a device for training operators; in fig. 2 - time diagrams that show his work.

The device for training the operators includes an operator console 1, a malfunctioning unit 2, comparators 3, elements AND 4, elements OR 5, a delay element 6, a time counter 7, a signaling node 8, a response input node 9. The remote control 1 contains a register 10, a control switch 11, a memory block 12, an error counter 13, a control input 14, a control input 15, a control output 16, and informational outputs 17. The malfunctioning unit 2 contains a decoder 18, separation elements 19 , information inputs 20, information outputs 21, control outputs of the first group 22, control outputs of the second group 23. The response input node 9 contains a pulse transformer 24, a dividing element 25, a rectifier 24, a rectifier 26, a comparator 27 and a limiter 28, the output of which is connected to the counting input 13 of the error counter. The input of the separating element 25 of the node 9 is connected to one output of the primary winding of the pulse transformer 24, the other output of which is connected to the power bus 33. One output of the secondary winding of the pulse transformer 24 is grounded, and the other is connected to the input of rectifier 26, the output of which is connected to the first input of the comparator 27, the second input of which is connected to the power bus 34. The output of the comparator 27 is connected to the input of the amplifier limiter 28. 2 Il.

The driver 26, the comparator 27, the amplifier-limiter 28, the response output 29, the control output 30. The device also contains power buses 31-34.

5 The device operates as follows.

The instructor dials the malfunction code in register 10. This code, after receiving the recording signal from the t-switch 11, is recorded in block 12 and enters via the information, outputs of the console-1 and the corresponding information inputs of block 2 to the inputs of the decoder 18, the corresponding 5 output of which is generated a voltage level equal to the nominal amplitude of the signals + E, operating in logical: circuitry coupled with a device of electronic equipment | | The specified voltage level: It goes directly to the corresponding control output of the first group of block 2 and through the corresponding separate element 19 to one of

 inooomiyonnyh exits of block 2,

covertly connected to the electrical removal of the serviced equipment. After the occurrence of this noise level voltage on one of the information

0 outputs of the device in the operation of the equipment associated with it are observed faults, recorded by means of hardware-software monitoring and diagnostics.

3143965

Simultaneously, the signal from the output of the switch 11 is fed directly to the installation input of the counter 7, as well as through the element 6 to the start input of the same counter 7,. The latter starts counting the time from the moment of entering the fault into the serviced equipment.

The process of finding a fault is one of Q in the localization of the electrical connection that is a source of interference to the normal functioning of the equipment, since such faults can be eliminated by mechanically replacing the units of the equipment being serviced.

When a suspected electrical connection (test point) is detected, the operator commutes a test voltage + E from the output of node 9 to it. If the suspected connection is galvanically connected to one of the information outputs of block 2, the test voltage through this 25 connection is fed to the corresponding control output of the second group of block 2, acting on the first input of one of the comparators 3. The second inputs of all the comparators 3, the threshold voltage Q + VQ + EQ is selected, chosen for the purpose of safety and reliability of the device operation under the condition

EH

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P1 is the maximum permissible magnitude of the amplitude of the interaction signals of the logic circuits of the electronic equipment associated with the device for training the operators.

Since E t is E, then a pulse signal is generated at the output of the corresponding comparator 3, which is fed to the second input of the corresponding element 4. If the fault is localized correctly, then the first input of this element 4 is strobe - the operating level from the corresponding control output of the first group of block 2, which results in the appearance of the AND 4 element of the pulse signal, which is fed through the OR 5 element to the stop input of the time counter 7, the input of the alarm node 8 and the setup input 12 memory block.

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In this case, node 8 signals the operator that a malfunction has been detected, counter 7 records the time spent on troubleshooting, and nulling unit 12 removes the interfering voltage level preventing the normal operation of the equipment to be serviced.

The operation of the proposed device basically coincides with the work of the known, however, in contrast to it, it also provides a calculation of the errors allowed by the trainees in the process of finding faults. This is done by counting the number of attempts to identify a particular malfunction by switching a test voltage from the output of node 9 to the suspected electrical connection of the equipment being serviced. At the moment when the fault is inputted, the signal from the control output 16 is the initial setting of the counter 13. Subsequently, each attempt to identify the malfunction, switching the output 29 to any electrical connection of the serviced equipment, leads to the addition of a unit to the counter 13. The process of forming pulses The counting circuit diagram of the node 9 is illustrated by diagrams (FIG. 2). The first diagram shows the plot of the voltage acting in the selected electrical connection of the serviced equipment until the state of health from the device for operator training (t 1 t) is entered during the fault interval (tg, tf,) during the test voltage (t, td) - .. for the case of correct identification of the malfunction, as well as for the case of an unsuccessful attempt made at the time t p when the malfunction is entered at a different address. In accordance with this situation, the moment of penetration of a pulse at the output of element 5 coincides with the time of a successful attempt to identify the fault, as shown in the second diagram. The third diagram shows voltage drops in one or another electrical equipment connection when switching to it the output of the node 9. The difference in the amplitudes of the pulse signals appearing at the output of the secondary winding of the pulse transformer 24 at the time of switching the test voltage, -

This or that electrical connection of the equipment being serviced is due to the possible difference in the magnitude of the transient current flowing in the primary winding of the transformer 24, which is formed due to the existence of a potential difference 411 Ef, - Ец- when the signal of a logical unit acts in the selected electrical connection (t tni / lUj Е ,, - О Е - when the signal of a logical zero (tt,) is in effect. To eliminate spurious error counting pulses, a comparator 27 serves, which ensures the formation of counting pulses only if e, if they exceed the required threshold level E, shown in the output diagram of the rectifier E; (t) The horn suppressor 28 serves to equalize the amplitudes of the counting pulses, as shown in the diagram Ejj (t)

If at the moment of correct identification of a fault in the meter 13 there is a number N, then this is a consequence of the fact that in the operator’s actions there is an element of randomness in the search for a fault and a larger number is fixed in the meter of the TOR, its action is less rational, about the lack of training of this operator. In the process of learning, one should strive to minimize the number of errors and minimize the localization of faults.

Thus, in the proposed device, a more objective control of the level of operator training is provided than in the well-known one. The simplicity of manufacturing the proposed device for training operators represents the possibility of its wide application in educational institutions and centers that train specialists in the operation of complex technical systems.

Claims (1)

Invention Formula An operator training device comprising an operator panel consisting of a register, a memory unit and a switch, the input of which is connected to the first power supply bus and the output to the input the memory unit records, the information outputs of the register are connected to the corresponding inputs of the memory unit, the fault generation unit consisting of a decoder, the outputs of which are connected to the corresponding outputs of the memory unit, partition elements of the group, whose inputs are connected to the corresponding outputs of the decoder, and high are the corresponding information outputs of the device, the comparators group, the AND elements, the OR element, the delay time counter, the signaling node and the response input node, which are divided. A signal element, an alarm node input, a timer counter stop input, and a memory block installation input are connected to the output of the OR element, to the inputs of which are connected the outputs of the corresponding AND elements, the time trigger start input is connected to the output of the delay element, and the setup input is connected to the output of the switch, connected to the input of the delay element, the outputs of the decoder are connected to the first inputs of the corresponding elements And, the outputs of the separation elements of the group to the first inputs of the respective comparators, the second inputs of which The outputs are connected to the second power bus, and the outputs to the second inputs of the corresponding I elements, which is so that, in order to expand the didactic capabilities of the device, an opshbok counter is inserted into the operator console, the installation input of which is connected to the switch output, and the response input unit is a pulse transformer, a comparator and a limiter amplifier, the output of which is connected to the counter input of the error counter, the input of the isolating element is connected to one output of the primary winding of the pulse transformer, The left output of which is connected to the third power bus, one output of the secondary winding of the pulse transformer is grounded, and the other is connected to the rectifier input, the output of which is connected to the first input of the comparator, the second input of which is connected to the fourth power supply terminal, the output of the comparator is connected to the input of the amplifier-limiter . IL  Ik: k. ; f; L / 5: 2