CN203275924U

CN203275924U - Multifunctional automatic bell-ringing control system device

Info

Publication number: CN203275924U
Application number: CN 201320215596
Authority: CN
Inventors: 张婷婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-25
Filing date: 2013-04-25
Publication date: 2013-11-06
Anticipated expiration: 2023-04-25

Abstract

The utility model discloses a multifunctional automatic bell-ringing control system device. The device comprises a one-chip microcomputer controller, a key circuit, a display circuit, a drive circuit and an electric bell. The device can not only freely adjust the time, realizing normal bell ringing when a class begins or is over, but also has a password protection function and an emergent bell ringing function. Experimental results indicate that the system has the characteristics of reliable performance, direct display, succinct circuit, low cost and the like, and has certain application value.

Description

A kind of multi-functional automatic ringing control system device

Technical field

The utility model relates to a kind of multi-functional automatic ringing control system device.

Background technology

Fast development along with Time Technology, the achievement of the modern electronic technology such as microelectronics and computing machine has been brought huge impact and revolutionary impact to traditional electronic device, the timer that electric bell forms from SIC (semiconductor integrated circuit) through classical electron Age of Technology, modern electronic technology epoch to present single-chip microcomputer contemporary electronic systems epoch of starting and the electric bell made; But our the tinkle of bells generally heard relaxes not now, and the time of ringing a bell is accurate not, can not freely arrange, and function is also very single.

Summary of the invention

The purpose of this utility model is to provide a kind of automatic ringing control system device that the time is accurate, the time can freely be adjusted, the tinkle of bells relaxes of ringing a bell.

A kind of multi-functional automatic ringing control system device of the present utility model comprises singlechip controller, key circuit, display circuit, driving circuit and electric bell; Described key circuit connects singlechip controller; Described singlechip controller connects respectively display circuit and driving circuit; Described driving circuit connects electric bell.

As preferably, described singlechip controller is the AT89C51 single-chip microcomputer.

Further, described key circuit forms by adding 1 key, mode selecting key and three buttons of definite key.

Further, described display circuit is that charactron with two quaternities shows.

Further, described driving circuit mainly is comprised of positive-negative-positive triode, resistance and hummer.

The beneficial effects of the utility model are: can not only carry out freely adjusting of time; realizing goes to school and leaves school normally rings a bell; and has cipher protection function and the function of promptly ringing a bell; the utlity model has dependable performance; intuitive display, simple circuit, the characteristics such as with low cost have certain using value.

Description of drawings

Fig. 1 is design system general diagram of the present utility model;

Fig. 2 is the utility model hardware overall circuit figure;

Fig. 3 is button subroutine flow chart of the present utility model;

Fig. 4 clock subroutine flow chart of the present utility model;

Fig. 5 cryptoguard subroutine flow chart of the present utility model;

Fig. 6 subroutine flow chart of ringing a bell of the present utility model.

Embodiment

See also Fig. 1, the multi-functional automatic ringing control system of the utility model device comprises singlechip controller, key circuit, display circuit, driving circuit and electric bell; Described key circuit connects singlechip controller; Described singlechip controller connects respectively display circuit and driving circuit; Described driving circuit connects electric bell.

See also Fig. 2, described key circuit adopts free-standing button, receives respectively port P1.0 mouth, P1.1 mouth and the P1.2 mouth of single-chip microcomputer, and the pull-up resistor of the 10k that connects respectively, prevents from disturbing and increasing the stability of circuit; Described display circuit shows with the charactron of two quaternities, adopts the P0 mouth of single-chip microcomputer to make the segment encode mouth, and the P1 mouth is made position choosing end; Described driving circuit is comprised of positive-negative-positive triode, resistance and hummer, utilize the positive-negative-positive triode to complete the driving of hummer, resistance of base stage series connection of triode is received the P3.7 interface of AT89C51, low level signal is delivered to the P3.7 mouth of single-chip microcomputer, the triode conducting, thus hummer work ordered about.

See also Fig. 3-Fig. 6, the entire system flow process realizes by the button program function that adjustment time, input password and pressure are rung a bell, and when having button to press, single-chip microcomputer is made corresponding judgement, and carries out the function of this button; Show the current time and current time and the schedule time are compared by timing routine, realizing going to school and leaving school normally when identical with the schedule time and ring a bell; Prevent that by the cryptoguard program other people from distorting the time arbitrarily, destroy the normal campus daily schedule; Remind the student to attend class the time after class by the subroutine of ringing a bell, and in time remind the student to evacuate as early as possible when running into emergency condition.

Claims

1. a multi-functional automatic ringing control system device, is characterized in that: comprise singlechip controller, key circuit, display circuit, driving circuit and electric bell; Described key circuit connects singlechip controller; Described singlechip controller connects respectively display circuit and driving circuit; Described driving circuit connects electric bell.

2. multi-functional automatic ringing control system device according to claim 1, it is characterized in that: described singlechip controller is the AT89C51 single-chip microcomputer.

3. multi-functional automatic ringing control system device according to claim 1, it is characterized in that: described key circuit forms by adding 1 key, mode selecting key and three buttons of definite key.

4. multi-functional automatic ringing control system device according to claim 1 is characterized in that: described display circuit is that the charactron with two quaternities shows.

5. multi-functional automatic ringing control system device according to claim 1, it is characterized in that: described driving circuit mainly is comprised of positive-negative-positive triode, resistance and hummer.