CN205583637U

CN205583637U - Timing control circuit based on singlechip

Info

Publication number: CN205583637U
Application number: CN201620293159.1U
Authority: CN
Inventors: 邝锡金; 王乐乐
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2016-04-08
Filing date: 2016-04-08
Publication date: 2016-09-14
Anticipated expiration: 2026-04-08

Abstract

The utility model provides a timing control circuit based on singlechip, the singlechip, clock circuit and the ON -OFF control circuit that are AT89C51 including the model, the clock circuit is used for providing clock information, ON -OFF control circuit is used for control switch A's disconnection, the AT89C51 singlechip is used for the disconnection of timeing and coming control switch A through ON -OFF control circuit the clock information that the clock circuit provided. This timing control circuit utilizes the clock circuit to be used for providing clock information, and ON -OFF control circuit is used for control switch's disconnection, and the AT89C51 singlechip is used for timeing to the clock information that the clock circuit provided to control switch A's disconnection is come through ON -OFF control circuit, thereby realize the automatic cutout load stop work to the circuit, the timing that realizes electronic equipment is charged and to the protection of high -power electric heater.

Description

A kind of SCM Based timing control circuit

Technical field

This utility model relates to a kind of based on single-chip microcomputer time set, refers more particularly to a kind of SCM Based timing control circuit.

Background technology

At present, both at home and abroad some electronic equipments and the protection of electrical equipment and Study of intelligent are had certain progress；Primary focus is right The protection of the portable set lithium ion battery such as mobile phone, flat board and the intelligent optimization of charger thereof, but its to have ignored some small-sized The protection of daily electric heater, such as electric shaver, hair dryer, electric kettle, electric blanket etc., and, for mobile phone, The lithium battery being substantially on the IED markets such as flat board, in charging process, though being all intelligent charging, Charging circuit can be automatically disconnected in theory after Chong Maning, but actually it may be seen that what circuit still connected, say, that Not thorough disconnecting circuit.The injury to lithium battery that overcharges is huge, so can reduce its life-span, affect user's Use.It addition, for high-power electric heater equipment such as above-mentioned described hair dryers, they do not have intelligent circuit to protect, and this is just It it is the fuse cord of many university dormitory breaking out of fires.

In order to make up the deficiency described in appeal, this utility model utilizes the timing function of single-chip microcomputer, when reaching the scheduled time by single Sheet machine controls (having inputted setting program in single-chip microcomputer), and circuit disconnects automatically, and load quits work, as needed circuit task again, Only need to reclose power supply.It is truly realized disconnection charging circuit and the protection of high-power electric heater, greatly gives the life of people Live and bring conveniently.

Utility model content

For the problems referred to above, this utility model provides a kind of SCM Based timing control circuit, and this timing control circuit utilizes Clock circuit be used for clock information is provided, ON-OFF control circuit be used for control switch disconnection, AT89C51 single-chip microcomputer be used for pair time The clock information that clock circuit provides carries out timing, and controls to switch the disconnection of A by ON-OFF control circuit；Thus realize electricity The load that automatically cuts off on road quits work, it is achieved the timing charging of electronic equipment and the protection to high-power electric heater.

This utility model is achieved by the following technical solution:

A kind of SCM Based timing control circuit, is the single-chip microcomputer of AT89C51, clock circuit and on-off control including model Circuit；

Described clock circuit is used for providing clock information；Described ON-OFF control circuit is used for the disconnection controlling to switch A；

The clock information that described AT89C51 single-chip microcomputer is used for providing clock circuit carries out timing, and is come by ON-OFF control circuit Control the disconnection of switch A；

Described clock circuit includes electric capacity C2 and the electric capacity C3 being connected in parallel, and electric capacity C2 one end connects crystal oscillator XO's One end, electric capacity C2 other end ground connection；Electric capacity C3 one end connects the other end of crystal oscillator XO, another termination of electric capacity C3 Ground；18 pins of AT89C51 single-chip microcomputer connect one end of crystal oscillator XO, and 19 pins connect crystal oscillator XO's The other end；

Described ON-OFF control circuit includes resistance R2, resistance R3, switch A, thin-film capacitor C1；Described resistance R2, resistance R3, one end of thin-film capacitor C1 are all connected with 9 pins of AT89C51 single-chip microcomputer；The other end of resistance R2 is with switch A's One end connects；The other end of switch A is connected with power supply；The other end of resistance R3 is connected with ground；Another of thin-film capacitor C1 End is connected with power supply.

Further, described SCM Based timing control circuit is placed in a square box, and the side of square box is arranged LCDs, LCDs is had to be connected with the single-chip microcomputer of AT89C51；Timing control circuit in square box passes through electric wire It is connected with external power source.

Further, described LCDs model is LCD1602.

Beneficial effect:

1. utilize the timing function of single-chip microcomputer, when reaching the scheduled time by Single-chip Controlling, wherein, single-chip microcomputer has inputted and has set Determining program, the automatic disconnecting consumers of circuit quits work, and as needed circuit task again, only need to reclose power supply；Really do To disconnecting charging circuit and the protection of high-power electric heater, bring conveniently greatly to the life of people.

2. achieve intelligentized control method, safety and the service life of electrical appliance can well be ensured.

3.LCD1602 LCDs, LCDs powerful, can show various, high-visible, and be prone to Programming, reliable and stable.

Accompanying drawing explanation

Accompanying drawing 1 is this utility model circuit catenation principle figure；

Accompanying drawing 2 is this utility model overall structure schematic diagram.

Detailed description of the invention

Further, described SCM Based timing control circuit is placed in a square box 3, the side of square box 3 Being provided with LCDs 2, LCDs 2 is connected with the single-chip microcomputer of AT89C51；Timing controlled electricity in square box 3 Road is connected with external power source by electric wire 1.

Further, described LCDs 2 model is LCD1602.

Described embodiment is that of the present utility model preferred embodiment but this utility model is not limited to above-mentioned embodiment, In the case of flesh and blood of the present utility model, those skilled in the art can make any conspicuously improved, Replace or modification belongs to protection domain of the present utility model.

Claims

1. a SCM Based timing control circuit, it is characterised in that: include single-chip microcomputer that model is AT89C51, time Clock circuit and ON-OFF control circuit；

SCM Based timing control circuit the most according to claim 1, it is characterised in that described SCM Based Timing control circuit is placed in a square box (3), and the side of square box (3) is provided with LCDs (2), liquid Crystal display screen (2) is connected with the single-chip microcomputer of AT89C51；Timing control circuit in square box (3) passes through electric wire (1) It is connected with external power source.

SCM Based timing control circuit the most according to claim 2, it is characterised in that described LCDs (2) Model is LCD1602.