SU1310872A1 - Device for checking knowledge levels of trainees - Google Patents

Abstract

The invention relates to technical means of education and can be used to assess the quality of programs used in machine control and training. The purpose of the invention is to expand the didactic capabilities of the device. The device comprises a program setting unit 1, a switch 6, a code generator 8, a switch 10 and a power bus. A block 4 of information reading, a shift register 7, a generator of 11 single pulses, a block 5 of synchronization and a driver 12 short pulses are entered into the device. New links have been introduced between device blocks. The structure of a shaper 8 codes consisting of multiplexer 30, trigger 31, two shapers 29 and 35 short pulses and three elements AND 32 - 34 is disclosed. The essence of the invention is based on creating the possibility of changing the program algorithm and expanding the didactic capabilities of the device . 1 hp f. 1 il. in "In W

Description

The invention relates to educational aids and may be. used to assess the quality of answers used in machine control and training.

The aim of the invention is to expand the didactic capabilities of the device by implementing the possibility of changing the algorithm of the program and expanding the functional capabilities of the device by implementing the possibility of processing laboratory data.

 The drawing shows the structure of the proposed device.

The proposed device comprises a program setting unit 1, a program input unit 2 (e.g., a tape recorder), line 3, which is the corresponding device inputs, a unit of 4 20 bits, a group of keys. These readings of information, block 5 command sync codes are indicated in block 1 of the unit, switch 6, shift register 7, driver 8 codes, node

DJ characters,

and correspondingly .

9 interfaces, switch 10, generator 11 single pulses, driver 12 short pulses

Block 1 contains node 9, segment keys 13, bit keys 14, digital indicator 15, control node 16, keyboard 17, memory node 18, dynamic register 19, phase generator 20, power node 21,

Block 4 contains the node 22 frequency

filters, integrator node 23, device node 35 serves as block 5, 24 Schmidt flip-flops, element OR 25. Block 5 contains divider 26, counter 27 and decoder 28. Shaper 8 contains shaper 29 short

which works as follows: From the generator 20, pulses f are received with a duration of 5 ms, following with a frequency of 10 kHz. Further impulses

pulses, multiplexer 30, trigger 40 through shaper 12 receives 31, element 32, and elements 33 and 34, into divider 26 (the division factor shaper 35 short pulses is 12). The divider 26 forms

The node 9 contains the first optocoupler pair 36 and the second optocoupler pair 37.

The device works as follows.

From the output of node 2, information in the form of frequency-modulated pulses arrives at node 22. Frequency module The pulses D arrive at counter 27, which is set to zero on the leading edge by pulses Dj coming from node 16.

Qi is carried out, for example, by informa-

The frequency of 1 is 8 kHz, o is at 6.5 kHz and the end of byte is 5 kHz.

After the triggers 24 pulses 1 and O are sent to the element OR 25, which forms a burst of sync pulses. The bundle consists of six pulses, since the maximum number of commands can be 2 64. Further, the information goes to switch 6, which provides switching of information sources from node 2 or from trunk 3. Switch 6 is controlled by using switch 10. six-word words are entered in register 7.

Register 7 is needed to convert serial information from node 2 or to record parallel information from trunk 3. Switch-. mode is initiated by the command generated by the switch 6

on command with switch 10.

From register 7, information arrives at multiplexer 30, with the four least significant bits carrying information about the key code of block 1, and two most significant bits with information about a group of keys. These command codes are indicated in block 1.

DJ characters,

and the corresponding bits - about a group of keys. These command codes are indicated in block 1.

stately.

Command D is a single pulse of duration T 115 / U s, and each subsequent pulse D is delayed relative to the other pulse by time f. Thus, D2 commands are a series of pulses that are delayed relative to each other by G and repeated with a period of 61 ms. .

To form a pulse train

.thirty

  unit 5 serves as a device

which works as follows. The generator 20 receives pulses f with a duration of 5 ms, following with a frequency of 10 kHz. Further impulses

impulses D equal in duration to the duration of impulses D and the next 45 synchronous with them.

The pulses D arrive at the counter 27, which is set to zero on the leading edge by the pulses Dj coming from the node 16.

50 As a result of counting pulses D

at the output of the counter 27, four-digit codes are formed, corresponding to the temporal position of the DS-D pulses,. These codes go 55 to the decoder 28. Deuşfrator 28 generates a series of pulses, following synchronously with,; This series enters multiplexer 30, which is controlled from register 7.

no register is found

3

The information coming in the form of six-bit words from node 2, is filled in 7. After filling in register 7 for 2T, the time of the duplicate of the sequence D.-D and T is the duration of the end-of-byte (word) pulse duration.

The impulse of the imager 29 registers the trigger 31, the opening element AND 32. After the passage of the pulse D defined by the address from the register 7, the trigger 31 sets the initial state of the impulse 35 from the trailing edge of the pulse D. Next, the pulse D is fed to the inputs of the elements And 33 and 34, which are controlled from register 7 (two high-order bits). From the outputs of the elements And 33 and 34, the pulses D include, through the damping resistors, the LEDs of the two optocouplers 36 and 37, depending on the code of the two most significant bits of the word written in register 7.

The anodes of the photodiodes of node 9 are connected to the common bus of unit 1, and the cathodes are connected to node 16. Team K is formed with an open photodiode of an optocoupler 36, commands Kj — with an open photodiode of an optocoupler 37, and Kd — with two open photodiodes. Thus, the K-Kj commands are formed from DJ-DIJ pulses due to the opening of the photodiodes of node 9 during the time determined by the four least significant bits of the word coming from node 2 and the two most significant bits determine which photodiodes need to be opened.

After turning on the power from the power supply unit, the voltage is applied, which triggers the generator 11, a single pulse of which is necessary for setting the register 7 to the initial state.

When using trunk 3, it becomes possible, before carrying out laboratory work or other work related to training, program calculation, etc., to enter into block 1 a service algorithmic program and input data, having previously edited and recorded, for example, on a magnetic tape. This procedure allows to significantly reduce the preparation time for work and to have a library of programs.

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Claims (2)

one . A device for monitoring students' knowledge, comprising a program setting unit, a switch, a code generator and a switch, characterized in that, in order to expand the didactic capabilities of the device, a short pulse shaper, a synchronization unit, an information reading unit, a shift register and a single pulse generator are introduced into it , the output of which is connected to the installation input of the shift register, the information outputs of the driver codes are connected to the corresponding inputs of the program setting block, control which output is connected to the corresponding input of the synchronization unit, and the synchronization output - to the input of the short pulse generator, the output of which is connected to the information input of the synchronization unit, the output of which is connected to the first control input of the code generator, the second control and information inputs of which are connected to the corresponding outputs of the switch and the shift register, the switch output is connected to the control inputs of the information reading unit and the switch, the information ode of the first group are connected to respective outputs of the read block information, information outputs - to the corresponding inputs stvuyushzim shift register control output - to the corresponding input shift register and the data inputs of the second group are respective inputs. 2. The device according to claim 1, characterized in that in it the code driver contains two short pulse shapers, a trigger, three AND elements, a multiplexer, the information and control inputs of which are the information and first control inputs of the shaper, and the output is connected to the first input of the first element AND, the second input of which is connected to the trigger output, and the output to the first inputs of the second and third third elements AND, the second inputs of which are the corresponding information inputs of the driver, and the outputs correspond to of the output of the information, 35 40 45 50 513108726 the input of the first shaper of which is connected to the output of the second pulses is the second controller of the shaper of the short pulses, the input of the shaper, and the input of which is connected to the output of the transducer is connected to the S-input of the trigger, R-input I.