SU470851A1 - Device for controlling the knowledge of students - Google Patents

Description

The winding 17 of the step finder is connected to the contact 21 of the relay 11 of the clock generator. The contact 21 is prevented from burning by the capacitor 22 and the resistance 23.

The contact group 20 of the step finder is connected to the lamps 24-28 of the indicator 4 response numbers and through the switch 5 codes and blocks 2 and 3 of the input answers is connected to the windings of the relay of the comparison nodes 6 and 7.

The control unit is located in the teacher's console, on the panel of which there are control buttons 29 and 30. Button 29 is used to start up the device, and button 30 is to open the comparison nodes relay.

Blocks 2 and 3 of the input of answers are made in the form of KNOPO.K 31 and 32, placed on training places, the number of which is equal to the number of students in the group.

Nodes 6 and 7 compare the responses, each containing two relays 33 and 34, 35 and 36 and one capacitor 37, 38, respectively.

Relays 33 and 35 are for fixing incorrect answers, and relays 34 and 36 are for correct answers.

Contacts 39, 40, 41 and 42 of the relay are blocked, contacts 43 of the relay 34 disconnects from the relay circuit 33, contacts 44 of the relay 33 disconnects the relay 34, contacts 45 of the relay 36 disconnects from the relay circuit 35, and contacts 46 of the relay 35 disconnects the relay 36. Diodes 47 and 48 serve as vents between the relay coils.

Contacts 49, 50, 51 and 52 of the relay 33, 34, 35 and 36, respectively, include lamps 53, 54, 55 and 56 response indicators 8 and 9.

Lamps 53 and 55 are designed to indicate incorrect answers and the readiness of students to respond.

Lamps 54 and 56, having a colored color, indicate the correct answers.

The power supply of the relay nodes of comparison 6 and 7 is provided by two power supply units with different potential, for example, 24 and 6B, which are separated by diodes 57 and 58.

The device works as follows.

After issuing new information, students are given cards or textbooks with programmed questions and answers and switch 5 to the code for correct answer to the first question.

Having determined the number of the correct answer to the first question, the trainees press and release the answer input buttons 31 and 32, giving a signal of readiness to answer. At the same time, the voltage of 6 V is supplied through button 30, diode 58 and buttons 31 and 32 to relays 33 and 35 ,. which contacts 49 and 51 include lamps 53 and .55.

When the license plates of indicators 8 and 9 are illuminated, the teacher presses button 30, turning off relays 33 and 35, and then button 29, starting the device. In this case, the circuit includes a winding 17 of the step finder 59, the brushes of which, on the contact groups 18, 19 and 20, take the first step, then

A clock generator 60 is connected to the circuit, the relay 11 of which by contacts 21 continues to feed current pulses to the winding 17 until the searcher's batteries return to their original position.

As the finder of the work area of the contact group 20 passes by the brushes, the current is applied to the lamps 24, 25, 26, 27 and 28, which in order of priority illuminate the response numbers.

from one to five indicator 4.

At the moment of highlighting the answer number that the trainees consider to be correct, they click on the input codes of answers 31 and 32. When the answers of the students coincide with the coded electric current of 24 V contact group 20, switch 5 of response codes, diode 57 and input buttons 31 and 32 answers goes to the relay and the capacitors of the nodes of comparison 6 and 7. In this case, the relay

33 and 35 are turned on and pins 44 and 46 turn off relays 34 and 36. However, capacitors 37 and 38, having charged, ensure that relays 34 and 36 are fully switched on, which are blocked by contacts 40 and 42, and are turned off by contacts 43 and 45 from relay circuit 33 and 35 , and contacts 50 and 52 include lamps 54 and 56 indicators 8 and 9.

When the clevis finder brushes return to their original position, the electrical

the current comes from contact group 20 to power the lamps 54 and 56, which by color illumination indicate the correct answers.

If, for example, the learner presses button 32 when indicating the answer number that does not match the coded one, then through button 30, diode 58 and button 32 to the relay 35 and 36, a current of 6V flows, of which only relay 35 operates contacts 46 includes a lamp 55, the indicator

white backlit cell on the scoreboard wrong answer.

After the device has fixed the response of the trainees to the first question, they begin to answer another question, and the teacher switches the correct answer code to the next question using switch 5 and opens the comparison node relay using button 30, preparing them to receive signals from the trainees about their readiness to answer.

The process then repeats.

This embodiment of the device has allowed to simplify its design and improve the efficiency of the educational process. The proposed device allows a response to 15-20 test questions from a group of trainees within 10 minutes. The device is convenient to operate, inexpensive and easy to manufacture.

PREDMET of the invention

A device for controlling the knowledge of students,

containing clock

the search engine, the response number indicator, the response code switch, the answer input button, the comparison node, connected to the correct and incorrect answers indicator, and a diode, characterized in that, in order to simplify the device design, the clock generator output is connected to the first group pins of the spider finder, the winding of which is connected to the contact of the clock generator relay, the second group of pins of the stepper finder is connected to the HOJicpoB response indicator and through the response code switch, the diode and the answer input button connected to the windings of the comparison node relay.