CN201867944U

CN201867944U - AVR (Automatic Voltage Regulation) single chip microcomputer-based study reminding device for students

Info

Publication number: CN201867944U
Application number: CN2010206466981U
Authority: CN
Inventors: 崔立功; 曹艳艳; 林媚
Original assignee: Binzhou Polytechnic
Current assignee: Binzhou Polytechnic
Priority date: 2010-12-08
Filing date: 2010-12-08
Publication date: 2011-06-15
Anticipated expiration: 2020-12-08

Abstract

The utility model relates to the technical field of stationery, in particular to an AVR (Automatic Voltage Regulation) single chip microcomputer-based study reminding device for students, which is realized by the following structure: an AVR single chip microcomputer chip is arranged in a shell; a liquid crystal display, a combined button and a pyroelectric human body infrared sensor are arranged on the shell and are electrically connected with the AVR single chip microcomputer chip respectively; an AT24C08 chip and a DC (direct current) stabilized power supply are electrically connected with the AVR single chip microcomputer chip; an electret microphone and a loudspeaker arranged on the shell are electrically connected on the AVR single chip microcomputer chip by an ISD (instructional system design)1420 chip, a power input line is connected to a power switch and then is electrically connected to the AVR single chip microcomputer chip by the DC stabilized power supply, and the power switch is arranged on the shell. The study reminding device can remind the students, so as to enable the students to culture good study and resting habits; a lamp can be started timely according to the intensity of outside light and can be turned off automatically under certain condition; and the study reminding device also has the functions of a perpetual calendar and a timing alarm clock.

Description

AVR singlechip-based student learning reminding instrument

Technical Field

The utility model relates to a stationery technical field, it relates to a student learns and reminds appearance based on AVR singlechip to specificly.

Background

Most of the existing reminding instruments carry out corresponding reminding according to fixed time, and do not remind students in learning. The study of middle and primary school students at present is except the time of study at school, all the other most of time is study at home, because middle and primary school students' self-control is poor, and this unsuitable environment of study of family makes the student at home the efficiency of study very low, especially pupil, parents all have such realization, child often does the homework for a while, will unconsciously leave the study table to see meeting TV, eat and meet the thing, play and meet the child again, should do the homework in half an hour at school, it still can not do to have an hour to home. Meanwhile, long-time homework can cause eye and mental fatigue of children, and when the ambient light is dark, primary and secondary school students often do not remember to turn on the lamp in time to illuminate, so that the eyesight of the children is damaged, and the children are too early to be myopic. At present, a learning machine or a reminding instrument does not have a function of reminding students of learning and rest by utilizing the voice prompt of parents, and the desk lamp cannot be automatically turned on according to the strength of light.

Disclosure of Invention

The to-be-solved technical problem of the utility model is, to prior art not enough and provide a student study reminds technical scheme of appearance based on AVR singlechip, this scheme can remind middle and primary school students to study or have a rest, can reach the purpose of cultivateing child's good study custom, improving learning efficiency and protecting child's eyes according to the intensity control desk lamp switch of surrounding environment light.

The utility model discloses a realize like this, a student learns and reminds appearance based on AVR singlechip, a serial communication port, its AVR singlechip chip is arranged in the casing, liquid crystal display, the combination button, human infrared ray sensor of pyroelectric installs on the casing and is connected with AVR singlechip chip electricity, AT24C08 chip in addition, direct current regulated power supply is connected with AVR singlechip chip electricity, install electret microphone 1420 and the speaker on the casing and pass through ISD chip electric connection on AVR singlechip chip, pass through direct current regulated power supply electric connection to AVR singlechip chip behind the power input line connection to switch, switch installs on the casing.

The comparison circuit module comprising the 3DU5 phototriode is electrically connected to the AVR single chip microcomputer chip, and the 3DU5 phototriode is installed on the shell and senses the light intensity outside the shell; the output power socket installed on the casing is electrically connected on the AVR single chip microcomputer chip through the relay control circuit module.

The PCF8563 clock chip is electrically connected to the AVR single chip.

According to the size of the circuit board, the casing is designed to be 10-12cm long, 6-8cm wide and 3-4cm thick.

The technical scheme has the beneficial effects that the learning reminding instrument has simple structure, rich functions and strong practicability, can remind students of the voice according to the distance between the students and the learning table and the learning time, is favorable for cultivating good learning and resting habits and improving the learning efficiency; lamps such as a desk lamp connected to the desk lamp can be started in time according to the intensity of external light, the eyesight of students is protected, and the desk lamp can be automatically turned off after leaving the learning desk for a certain time according to the students; it also has perpetual calendar function, displaying year, month, day and time, and can timing alarm clock.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic block diagram of the circuit of the present invention.

The device comprises a 1-liquid crystal display screen, a 2-combined key, a 3-electret microphone, a 4-ISD1420 chip, a 5-loudspeaker, a 6-output power socket, a 7-relay control circuit module, an 8-power switch, a 9-direct current stabilized power supply, a 10-power input line, an 11-AVR single chip microcomputer chip, a 12-pyroelectric human body infrared sensor, a 13-AT24C08 chip, a 14-comparison circuit module, a 15-PCF8563 clock chip, a 16-3DU5 photoelectric triode and a 17-shell.

Detailed Description

The following will further explain the detailed structure and principle of the present invention with reference to the accompanying drawings.

As shown in the figures, the utility model discloses a student learns and reminds appearance based on AVR singlechip, a serial communication port, its AVR singlechip chip 11 arranges in the casing, liquid crystal display 1, combination button 2, pyroelectric human infrared ray sensor 12 installs on casing 17 and is connected with AVR singlechip chip 11 electricity, AT24C08 chip 13 in addition, direct current constant voltage power supply 9 is connected with AVR singlechip chip 11 electricity, install electret microphone 3 and speaker 5 on casing 17 on AVR singlechip chip 11 through ISD1420 chip 4 electricity connection, pass through direct current constant voltage power supply 9 electricity behind the power input line 10 be connected to switch 8 and be connected to AVR singlechip chip 11, switch 9 installs on casing 17; the comparison circuit module 14 comprising the 3DU5 phototriode 16 is electrically connected to the AVR singlechip chip 11, and the 3DU5 phototriode 16 is arranged on the shell 17 and well senses the light intensity outside the shell 17; the output power socket 6 arranged on the shell 17 is electrically connected on the AVR single chip microcomputer chip 11 through the relay control circuit module 7; the PCF8563 clock chip 15 is electrically connected to the AVR single chip 11; according to the size of the circuit board, the casing is designed to be 10-12cm long, 6-8cm wide and 3-4cm thick.

The function of each module or component. Wherein,

a liquid crystal display screen 1 having functions of displaying menus of operations and date, time, etc.; the combined key 2 completes corresponding operations of time setting, recording, volume, learning time, timing alarm clock and the like through keys; the electret microphone 3 is a recording device of sound, and converts the sound into an electric signal to be provided to the ISD1420 chip; the ISD1420 chip 4 records and stores human voice and outputs an electric signal of the recorded voice according to an instruction; the loudspeaker 5 emits sound according to the instruction of the AVR singlechip chip; an output power socket 6, which is an output device for supplying power to external facilities such as a desk lamp; the relay and the control circuit 7 thereof complete the action of whether to output the alternating voltage or not by receiving the signal of the AVR single chip 11; the power switch 8 controls the power supply of the utility model to be switched on or off; a DC stabilized power supply 9 for converting AC power into DC power to provide a DC power supply for the utility model; the AVR singlechip chip 11, the control core CPU of the utility model, can receive, process and send out each electric signal; the pyroelectric human body infrared sensor 12 can sense the distance between a human body and the learning table, convert the distance into an electric signal and transmit the electric signal to the AVR single chip microcomputer chip; the AT24C08 chip 13 and the data storage chip can record the learning time, the timing alarm, the timing reminding and other information; the comparison circuit module 14 comprising the 3DU5 phototriode 16 can sense the brightness of external light, judge whether the external environment needs to start the lighting facility or not through the comparison circuit, and transmit an electric signal to the AVR singlechip chip; the PCF8563 clock chip 15 provides a clock for the reminder and can provide information such as year, month, day, time and the like.

The electric connection mean connect to the position that suits by multiple modes such as power cord, wire, circuit board according to the actual conditions of circuit, module, realize the function of module or components and parts, this is this technical field's prior art.

When the utility model is used, a power plug of the desk lamp is inserted into an output power socket 6 of the utility model, a power input line 10 is connected to a living power supply, then a power switch 8 is turned on, the combined key 2 is operated to record the sound of parents into an ISD1420 chip 4 in a segmented manner through an electret microphone 3 and store the sound, and the reasonable time length for each study of students is set; when a student sits on the learning table for learning, the pyroelectric human body infrared sensor 12 transmits human body information sensed to the AVR single chip microcomputer chip 11 and automatically starts to record the learning time of the student; when the student gets up and leaves the learning table, the utility model can prompt according to the set voice, the loudspeaker 5 can send the sound recorded in advance by the parents, thereby playing the role of prompting and reminding the student, and if the student returns to the learning table within the set time, the utility model can continue to remember the time; when the student lasts the study and reaches the time length of setting for, the utility model discloses can send the suggestion pronunciation of recording automatically and tell the student should have a rest, the student can be according to the condition decision of oneself whether continue study or rest, at this moment a study record cycle finishes. A new learning period may be reset as described above. Meanwhile, when the utility model discloses when the perception is near the student, 3DU5 photoelectric triode 16 can the strong and weak degree of external light, and comparison circuit module 14 can calculate whether should open lighting apparatus according to light luminance to the signal of telecommunication transmits to AVR singlechip chip 11, sends the instruction of circular telegram or outage to relay and its control circuit module 7 by AVR singlechip chip 11 again, with the desk lamp that the utility model is connected with just can open or close; when a student leaves the learning table, the pyroelectric human body infrared sensor 12 transmits an electric signal to the AVR single chip 11 and starts timing, and when the timing reaches a set time length, the relay and the control circuit module 7 thereof cut off an output power supply according to an instruction of the AVR single chip 11, and the desk lamp is turned off. In addition, the PCF8563 clock chip 15 of the present invention also has the functions of a perpetual calendar and a clock, can display the year, month, day and time on the liquid crystal display part, can set the time mode of display and correct the time; the AT24C08 chip 13 sets the timed alarm and wake-up functions according to the PCF8563 clock chip 15.

Claims

1. The utility model provides an appearance is reminded in student's study based on AVR singlechip, a serial communication port, its AVR singlechip chip is arranged in the casing, liquid crystal display, the combination button, pyroelectric human infrared sensor installs on the casing and is connected with AVR singlechip chip electricity, AT24C08 chip in addition, direct current regulated power supply is connected with AVR singlechip chip electricity, install electret microphone and the speaker on the casing through ISD1420 chip electricity connection on AVR singlechip chip, the power input line is connected to power switch after through direct current regulated power supply electricity and is connected to AVR singlechip chip, power switch installs on the casing.

2. The student learning reminder based on the AVR singlechip as claimed in claim 1, wherein a comparison circuit module comprising a 3DU5 phototriode is electrically connected to the AVR singlechip chip, the 3DU5 phototriode is mounted on the casing and senses the light intensity outside the casing; and an output power socket arranged on the shell is electrically connected on the AVR single chip microcomputer chip through a relay control circuit module.

3. The student learning reminder based on the AVR singlechip as claimed in claim 1 or 2, wherein a PCF8563 clock chip is electrically connected to the AVR singlechip.

4. The AVR singlechip-based student learning reminder of claim 1, wherein the casing is designed to be 10-12cm long, 6-8cm wide and 3-4cm thick.