CN2276169Y

CN2276169Y - Intelligency self-correcting programmable real-time time controller

Info

Publication number: CN2276169Y
Application number: CN 96251088
Authority: CN
Inventors: 刘强
Original assignee: Individual
Current assignee: Liu Qiang
Priority date: 1996-12-31
Filing date: 1996-12-31
Publication date: 1998-03-11
Anticipated expiration: 2006-12-31

Abstract

The utility model relates to an intelligent self-correcting programmable real-time controller, which is composed of a receiver circuit, a frequency decoding circuit, a single-chip computer and an adjunct circuit thereof, and an output control circuit. The utility model utilizes the time signals of a broadcasting station to periodically and automatically correct the time of a clock, and can precisely carry out a series of time control functions according to the clock. The utility model is mainly characterized in that the single-chip computer is utilized to judge the time correcting signals according to the logical relationship of the signal length and the signal interval of the time correcting signals of the broadcasting station, the real-time clocks are corrected orderly, and various timing functions are completed according to the real-time clocks. The utility model is used in the fields of self-correcting precise real time display and control in various occasions.

Description

Real-time time controller able to programme during the intelligence self-correcting

The present invention relates to a kind of time signal and regularly proofread real-time clock automatically, and accurately carry out the controller of a series of real-time time control function according to this clock by the broadcasting station.

At present, when timer has been realized self-correcting to a certain degree during known self-correcting and control function, but the correcting delay signal detection of complex, accuracy the during school and antijamming capability also do not reach the degree of complete practicality.It relies on the number that detects broadcasting station time signal special audio to judge correcting delay signal, has certain problem aspect accuracy and the antijamming capability.On the other hand, with the widespread use of single-chip microcomputer and the development of Intelligent Measurement technology, the most practicable technology in the circuit when making the time signal that utilizes single-chip microcomputer to detect the broadcasting station become self-correcting.

The purpose of this utility model is the real-time clock of automated intelligent ground according to the time signal check and correction controller inside in broadcasting station, cancelled the accumulated error of clock, and show and other peripherals carried out a series of time control function exactly according to real-time clock the deadline.

The purpose of this utility model is achieved in that controller is made of receiver circuit, frequency decoding circuit, single-chip microcomputer and accessory circuit, output control circuit.At first radio is tuned in the Central People's Broadcasting Station, when arriving integral point during the moment, radio station five frequencies of output are 800Hz and the time signal that frequency is 1600Hz, and this signal is input to the frequency decoding circuit.The frequency decoding circuit utilizes the phaselocked loop device to identify 800Hz and 1600Hz signal respectively, and signal is outputed to single-chip microcomputer.Single-chip microcomputer is judged correcting delay signal intelligently by the logical relation of judging signal length, signal interval, even when the signal of receiving at radio is lack of standardization, utilizes intelligent decision, also can identify correcting delay signal.Utilize this correcting delay signal, single-chip microcomputer is proofreaded real-time clock, and accurately controls regularly according to real-time clock.

Owing to adopted such scheme, real-time time controller able to programme is more weak or be subjected to also accurately picking out the correcting delay signal in radio station under certain situation about disturbing at radio signals during this intelligent self-correcting, and the check and correction real-time clock also carries out timing controlled.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a theory diagram of the present utility model.

The electrical schematic diagram of an embodiment of real-time time controller able to programme when Fig. 2 is intelligent self-correcting.

The utility model is made up of four parts: receiver circuit, frequency decoding circuit, single-chip microcomputer and accessory circuit, output control circuit are formed.The each several part logical relation as shown in Figure 1.

Fig. 2 is the electrical schematic diagram of an embodiment of the present utility model.Entire circuit is that core constitutes with the U1:AT89C51 single-chip microcomputer, and two LM567 constitute the phase-locked loop frequency decoding circuit, and are attached again with other related circuit.The AT89C51 single-chip microcomputer includes the EEPROM of 4K byte, comes load module with it.U2:LM567 and U3:LM567 detect 1600Hz and the 800Hz sound signal in the time signal respectively, form DETECT2 and DETECT1 logical signal and are input to single-chip microcomputer.Receiver circuit is used for receiving the signal in broadcasting station.The single-chip microcomputer accessory circuit is used to provide reset signal, keyboard and display circuit, real time clock circuit, the power circuit of single-chip microcomputer.Output control circuit is controlled the break-make of five road 220V alternating currents respectively.

The principle of work of present embodiment is as follows: at first radio is tuned in the Central People's Broadcasting Station, when arriving integral point during the moment, radio station five frequencies of output are 800Hz and the time signal that frequency is 1600Hz, and this signal is input in the frequency decoding circuit.U3 and U2 successively detect the signal of 800Hz and 1600Hz respectively and are input to single-chip microcomputer.Single-chip microcomputer judges whether to be time signal according to the length of 800Hz and 1600Hz signal and the spaced relationship of signal, when confirming as time signal, single-chip microcomputer just according to this moment real-time clock value proofread real-time clock.On the other hand, the program in the single-chip microcomputer can be controlled regularly output according to the time of real-time clock, and supervisory keyboard and demonstration.

Like this, clock (is powered by the back-up source of controller during this) under the situation that is no more than 30 days in outage after check and correction for the first time, and the deadline shows and control controller exactly.

More than be described as a kind of embodiment of the present invention, can change accordingly according to the technical solution of the utility model.

Claims

Real-time time controller able to programme during a kind of intelligent self-correcting, regularly proofread clock automatically by the time signal that utilizes the broadcasting station, and accurately carry out a series of time control function according to this clock, it is characterized in that: utilize single-chip microcomputer, judge correcting delay signal by the signal length of broadcasting station correcting delay signal and the logical relation in sigtnal interval, proofread real-time clock according to this, and finish various real-time timing functions according to real-time clock.