CN203838767U

CN203838767U - Electronic roll call device

Info

Publication number: CN203838767U
Application number: CN201420195803.2U
Authority: CN
Inventors: 周云
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-15
Filing date: 2014-04-15
Publication date: 2014-09-17
Anticipated expiration: 2024-04-15

Abstract

An electronic roll call device comprises a switch installed on a desk, an A/D converter connected with the switch, a DS1302 clock chip connected with the A/D converter, a buffer register, an RS2232 communication card I connected with the output end of the buffer register, an RS2232 communication card II connected with the RS2232 communication card I through an RS2332 data line, a trigger connected with the RS2232 communication card II and an indication panel installed on a platform, wherein a control end of the buffer register is connected with the DS1302 clock chip, the buffer register stores name Chinese character ANS II codes, current signals emitted by the switch are converted into digital signals through the A/D converter and then input to the DS1302 clock chip, the DS1302 clock chip converts hexadecimal instruction codes, representing Chinese characters, in the buffer register storing the student name Chinese character ANS II codes into 24-bit serial data with the Baud rate of 9600 after receiving a switch instruction, the 24-bit serial data are transmitted into the trigger through the RS2232, the trigger generates corresponding triggering signals, the triggering signals are converted in a D/A mode, and an LED lamp is controlled to be turned on through a relay. The electronic roll call device improves the roll call efficiency, and saves the time in class.

Description

Electronics roll-call device

Technical field

The utility model relates to a kind of teaching appliance, is specifically related to a kind of electronics roll-call device.

Background technology

Teacher goes at school toward need to call the roll, and the need of work teacher who calls the roll waits for that student answers after reading one by one student's name, and therefore efficiency is underground, has wasted the quality time in classroom.

Summary of the invention

The utility model, in order to overcome the deficiency of above technology, provides a kind of efficiently electronics roll-call easily device.

The utility model overcomes the technical scheme that its technical matters adopts:

This electronics roll-call device, comprise the switch being installed on desk, be connected in the A/D converter of switch, be connected in the DS1302 clock chip of A/D converter, control end is connected in buffer register DS1302 clock chip and that store name Chinese character ANSII code, be connected in the RS2232 address card I of buffer register output terminal, the RS2232 address card II being connected with RS2232 address card I by RS232 data line, be connected in the trigger of RS2232 address card II and be installed on the indication panel on dais, some LED lamps are installed on described indication panel, described LED lamp is connected in power supply through relay, the control end of described each relay is connected in each output pin of trigger through D/A converter, on described indication panel and above being positioned at LED lamp, be fixed with the cardboard for writing name.

On indication panel described above and above being positioned at each LED lamp, glass plate is all installed, below described glass plate, is provided with the slot that width and cardboard size match.

The beneficial effects of the utility model are: student can press the switch on table, the current signal that switch sends is converted to digital signal and is input in DS1302 clock chip through A/D converter, receive after switch order that to DS1302 clock chip to convert baud rate to be 9600 24 bit serial data and transfer in trigger by RS2232 by the 16 system instruction codes that store the representative Chinese character in the buffer register of student name Chinese character ANSII code, trigger produces corresponding trigger pip and is converted to analog current signal through D/A, its pilot relay adhesive, thereby this student's place LED lamp is lighted.Teacher can learn student's attendance according to the light on and off situation of each LED lamp on indication panel, has improved greatly roll-call efficiency, has saved time in classroom.

Brief description of the drawings

Fig. 1 is that system of the present utility model connects block diagram;

Fig. 2 is indication panel structural representation;

Fig. 3 is cardboard inserting slot construction schematic diagram;

In figure, 1. indication panel 2.LED lamp 3. glass plate 4. slots.

Embodiment

Below in conjunction with accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, the utility model is described further.

This electronics roll-call device, comprise the switch being installed on desk, be connected in the A/D converter of switch, be connected in the DS1302 clock chip of A/D converter, control end is connected in buffer register DS1302 clock chip and that store name Chinese character ANSII code, be connected in the RS2232 address card I of buffer register output terminal, the RS2232 address card II being connected with RS2232 address card I by RS232 data line, be connected in the trigger of RS2232 address card II and be installed on the indication panel 1 on dais, some LED lamps 2 are installed on indication panel 1, LED lamp 2 is connected in power supply through relay, the control end of each relay is connected in each output pin of trigger through D/A converter, on indication panel 1 and be positioned at LED lamp 2 tops and be fixed with the cardboard for writing name.Be a teacher will call the roll time, student can press the switch on table, the current signal that switch sends is converted to digital signal and is input in DS1302 clock chip through A/D converter, receive after switch order that to DS1302 clock chip to convert baud rate to be 9600 24 bit serial data and transfer in trigger by RS2232 by the 16 system instruction codes that store the representative Chinese character in the buffer register of student name Chinese character ANSII code, trigger produces corresponding trigger pip and is converted to analog current signal through D/A, its pilot relay adhesive, thereby this student's place LED lamp is lighted.Teacher can learn student's attendance according to the light on and off situation of each LED lamp 2 on indication panel 1, has improved greatly roll-call efficiency, has saved time in classroom.

Owing to may student changing teacher, therefore on indication panel 1 and be positioned at each LED lamp 2 tops glass plate 3 is all installed, glass plate 3 belows are provided with the slot 4 that width and cardboard size match.Per term can be write new student name on cardboard and then insert in slot 4, and student's name shows by glass plate 3, is convenient for changing.

Claims

1. an electronics roll-call device, it is characterized in that: comprise the switch being installed on desk, be connected in the A/D converter of switch, be connected in the DS1302 clock chip of A/D converter, control end is connected in buffer register DS1302 clock chip and that store name Chinese character ANSII code, be connected in the RS2232 address card I of buffer register output terminal, the RS2232 address card II being connected with RS2232 address card I by RS232 data line, be connected in the trigger of RS2232 address card II and be installed on the indication panel (1) on dais, some LED lamps (2) are installed on described indication panel (1), described LED lamp (2) is connected in power supply through relay, the control end of described each relay is connected in each output pin of trigger through D/A converter, described indication panel (1) above and above being positioned at LED lamp (2) is fixed with the cardboard for writing name.

2. electronics roll-call device according to claim 1, it is characterized in that: described indication panel (1) above and above being positioned at each LED lamp (2) is all provided with glass plate (3), is provided with the slot (4) that width and cardboard size match below described glass plate (3).