SU1277169A1 - Device for training and checking knowledge levels of trainees - Google Patents

Abstract

The invention relates to the field of automation and computer technology, in particular to the technical means of training, and can be used in the organization of programmed training in various educational institutions. The purpose of the invention is the expansion of the didactic capabilities of the device when studying electrical circuits. The invention is based on the introduction into the device containing a block for entering educational information, a block for presenting educational information and a block for setting the program 1 of training, a series of additional block for entering educational information, a block of comparison, the first element AND, the first element OR and the first the key, the second element AND in series, the start-stop generator of the code counter and the second element OR, the second key and the analog-digital converter, as well as second and third tier counters. 1 hp f-ly, 4 ill.

Description

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QO The invention relates to the Aptec Peak and Computer Science, in particular to the technical means of training, and can be used in the organization of software training in various educational institutions. The purpose of the invention is to expand the didactic capabilities of the device when studying electrical circuits. Figure 1 shows the structure of the proposed device; FIG. 2 is a schematic representation of a graphic information input unit; Fig. The design of the input block of graphic information; Fig. 4 shows the structure of the block of input of graphic information. A device for training and controlling students' knowledge (Fig. 1) contains a store 1 of circuit elements and nodes, a node 2 of switching elements, a node 3 of a set of electrical circuits, an element 4 OR, a node 5 of switching elements, a key 6, the keyboard 7 of the handset, the training program task unit 8, the counter 9, the code converter 10, the code converter 11, the generator 12, the key 13, the display unit 14, the key 15, the start / stop generator 16, the training program presentation frame 17, the analog digital converter 18, counter 19 OR element 20, memory unit 21, graphic information input unit 22, AND element 23, comparison block 24, counter 25, display unit 26, counter 27, element 28 AND o. Graphic 1P1 input block 22 (FIG. . 3) a coderlott transparent base 29 with a discrete network of conducting tracks 30 applied on it, a pantograph 31, one end 32 of which is fixed at the origin of coordinates, and another corner 33 is mounted on the other side, the angle-code converter 34 consisting of a plate with applied on it around the circumference of the road 35 and current collectors 36, V whith the accuracy detachably angular coordinates determined by the number of tracks 35, each track 35 ogpoede L is one row of the digital code. The planks .35 are broken up into conductive and non-conducting segments, and thus the contacts 36 5 slides across the output, outputting the binary code of the angle formed by the pantograph bars. .O nJsoK graphical information input also contains a pinfractor 37 functional converter 38, STI element 39, Store 1, nodes 2, 3 and 5, generator 12 represent the training information input block and nodes 14, 17 and 26 are the training information presentation block A device for training and controlling uchash knowledge, their operation operates in two modes; Training and Knowledge Control In the first case, on the keyboard 7, the Programmable Learning key is pressed, the signal from which is sent through item 4 to key 6, and the node 5 is connected. To receive a piece of information, the student on the keyboard 7 presses the Lusk key, the signal from which is fed to the input of the counter 9, Code Conversion. Tel 11 converts the state of the counter 9 into the control code of the node 17. As a result, the student is presented with a training frame} in which the studied a schematic and text that reads its work. The code converter 10, according to the state of the counter 9, generates the control code of nodes 2 and 5. As a result, the necessary circuit elements and nodes of the magazine 1 are connected to node 3, i.e. when the electrical circuit required by the training program is selected, and with the help of node 5, the connection point of node 14 is selected to display the electrical processes in the electrical circuit under study. The generator 12 outputs a pulse sequence to the input of the circuit under study. At the end of the learning frame, the student will again press the Start button and the device will cycle again in the Learning mode. The contents of store 1 and the set of educational personnel of node 17 are changed; the teacher can easily and quickly change the training programmIi, not waste, time for rendering and plotting voltage for specific variants of the electrical circuit. Next, we proceed to consider the operation of the device in the knowledge control. On the keyboard 7, the key. Programmed learning is pressed and the Control key is pressed.

knowledge, the signal from which enters the key 13, thereby connecting the analog-to-digital converter 18 to the output of node 5. At the same time, the same signal enters the key 15, allowing the signal from the Start button to the start-stop generator 16, the device is ready for operation Control of knowledge. The learner presses the Start key. The device works in the same way as in the Training mode, the knowledge control test frame, only the signal from the output of node 5 goes not to the node 14, but through the key 13 to the input of the analog-digital converter 18. At the same time, the signal from the Start key of the keyboard 7 through the key 15 and element 28, -to which sync pulses arrive from generator 12, starts a start-stop generator 16. Each pulse of a series of impulses of a start-stop generator 16 arriving at the input of counter 19, outputs the address that passes through element 20 to the address buses of the block ka 21. This same pulse triggers analog-to-digital converter 18 and is the Recording signal for block 21. Thus, the sampled and quantized signal is recorded at the control point specified in the control frame in successive cells of block 21. The control frame, unlike the training frame, does not contain an explanatory text. In his control question, for example, an electrical circuit may be contained: A circuit with predetermined nominal values and a requirement to construct a plot for voltage at a given point. After solving the task, the student presses the Readiness key on the keyboard 7 and, using block 22, enters the result obtained. At the moment of entering the response from one output of block 22 to the input of block 21, the Read signal comes, from the other output - the coordinate X, which goes through element 20 to the address buses of block 21 and from the third output - to the input of block 24 - coordinate Y. Block 24 in If digital codes coming from block 21 and block 22 mismatch, the Error signal is received, which through element 23 enters the input of counter 27 and the input of element 4 At the input of element 23, a strobe signal is received from the Ready key, preventing false generation of the Error signal. The Error signal, coming through element 4, turns on key 6, thereby connecting node 14 to the output of node 5. As a result, the student will receive the correct answer on the screen of node 14. The input of counter 2 receives a signal from the Start key, and thus it counts the total number of frames presented, and in counter 21, the number of errors. The contents of the counters 25 and 27 are indicated by the node 26.

To correspond to the scale of the real process and the input graphics on the tablet of block 22 (Fig. 2), the x, y coordinate axes are plotted with divisions. When presenting a control task frame to the student, it indicates the scale, i.e. the cost of one division, for example, along the X axis - 1 NS, along the Y axis - 18. The comparison is made with an accuracy that excludes the effect on the correctness of the response of the instrumental errors, analytical dependencies and variations in the parameters of electrical elements. The error is determined by the bit width of the converter 18 and the block 22. Moreover, the bits of their output signals must be the same.

Claims (2)

Block 22 (fig.Z and 4) works as follows. Training on a sheet of paper of a standard format, for example, graph paper with plotted coordinates (figure 2), builds a graph of dependence required by the control question. Then it overlays a sheet of block 22 over the sheet so that the coordinate axes coincide. Bypassing the contour of the depicted graphic with a conductive contact 33 (FIG. 3), it enters the X and Y Coordinates. Indeed, when the current lead touches it with contact 33 of a discrete network of conductive tracks 30 (FIG. 3) connected to the input of the encoder 37, ; (FIG. 4) or when the code changes at the output of the converter 34 (FIG. 4), at the output of element 39 (FIG. 4), the Readiness signal appears, which, arriving at the input of the converter 38, is for it a Read signal. Converter 38 (FIG. 4) is a permanent programmable storage device in whose cells the coordinates of Y are written, and the X coordinate and the code of the converter 34 are sent to the address buses. Thus, by the Readiness signal, the device outputs the coordinates X and Y. In order for the Ready signal not to be constantly present at the output, the signals at the outputs of element 3 (Fig. 4) are fed through differentiating circuits (not shown). The advantage of the proposed graphic information input unit 22 with sufficient accuracy is simplicity of construction, convenience of work, i.e., in essence, the student traditionally builds a graph, and then introduces it into the training and knowledge control unit of the school with minimal cost. As the node 17 can be used any slide projector with remote control type of bearing 700 AB. Node 14 is a conventional electron oscilloscope. Depending on the studied temperature. Co-ordination panels can be interchangeable. On some of them, some electrical circuits may already be assembled and it is only necessary to change some elements on which the output characteristics of the device under study, which may be, for example, the unit of the automatic control system, and the elements its components, depend. Thus, the proposed device is characterized by a wide range of applications (i.e., is used to teach various courses), the ability of the students to construct a response, the absence of a set of response standards, the impossibility of guessing the answer. In addition, it allows one to study not only electrical radio engineering, etc. circuits, but also various processes, subject to the creation of their electrical models. For example, by creating models of amplifying, differentiating, integrating, retarded, and other links, one can study all sorts of processes occurring in automatic control systems. In addition, using the principle of electrical circuit duality, one can study all kinds of volumes and processes that are non-electrical in nature. (Claim 1. Device for training and monitoring knowledge of students, containing block 696 for entering educational information, block for presenting educational information and block for assigning a training program, which is different from the fact that, in order to expand the didactic capabilities of the device, sequentially included are entered into it an additional training information input unit, a memory unit, a comparison unit, the first element AND, the first OR element and the first key, the output of which is connected to the first input of the educational information presentation unit, successively the included second element AND, the start-stop generator, the first counter and the second element OR, the output of which is connected to the second input of the memory unit, the second key and the analog-digital converter, the second input of which is connected to the output of the start-stop generator, and the output with the third input of the memory block, the second counter, the input of which is connected to the first output of the learning task set block, and the output to the second input of the pre-block; the third counter, the input of which is connected to the output of the first element I, and the output to the third input of the presentation information block, the fourth input of which is connected to the second output of the instruction program, the third output of which is connected to the second input of the first element OR , the fourth output - with the second input of the first element I, the fifth output - with the first input of the second element I, the sixth output, with the first input of the second key, the seventh output with the input of the main input unit of educational information, the first output D of which is connected to the second inputs of the first and second keys, and the second output to the second input of the second element AND, the second and third outputs of the additional block for inputting educational information are connected to the second inputs of the second OR element and the comparison block respectively, the fourth input of the memory block is connected to exit start-stop generator. 2. The device according to claim 1, characterized in that in it the additional block for entering educational information contains a tablet, executed in the form of a transparent base, on which contains the current cable and the 1st track, the coordinate reading unit, which is out of the current collector, placed on one end of the pantograph, the other end connected to the transparent base and the kinematically connected to the angle-code converter, connected via the OR element and directly to the first and the second inputs of the functional transform 1698 The bodies, respectively, and the PTFrator, the output of which is connected to the second BX J of the OR element and the third input of the functional converter, is the second output of the block, and the input is connected to the conductor tracks, the outputs of the OR element and the functional converter are the first and third outputs of the block, respectively.