CN203982100U

CN203982100U - The electronic clock of automatic correcting time

Info

Publication number: CN203982100U
Application number: CN201420155914.0U
Authority: CN
Inventors: 苏玉香
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2014-04-02
Filing date: 2014-04-02
Publication date: 2014-12-03
Anticipated expiration: 2024-04-02

Abstract

The electronic clock of automatic correcting time, belong to electronic device field, comprise civil power, transformer, rectification circuit, mu balanced circuit, filtering circuit, liquid crystal display, the first single-chip microcomputer, decoding chip, gps signal, second singlechip, shift register, charactron, keyboard and clock chip, described civil power, transformer, rectification circuit, mu balanced circuit, filtering circuit accesses the first single-chip microcomputer and second singlechip successively by wire, the first single-chip microcomputer is connected with liquid crystal display by signal wire, decoding chip, on second singlechip, be connected with shift register by signal wire, keyboard and clock chip, on shift register, be connected with charactron, on decoding chip, be connected with gps signal, gps signal is connected on telephone set or mobile phone.When this device can carry out the caller identification school of electronic clock by the gps signal of phone, easily practical, time correction error can be controlled within 1 minute.

Description

The electronic clock of automatic correcting time

Technical field

The utility model relates to the electronic clock of automatic correcting time, is the certain clock signal of a kind of energy automatic reception the electronic clock that can automatically adjust Time of Day demonstration, belongs to electronic device field.

Background technology

In all electronic systems, clock is equivalent to heart, and the performance of clock and stability value are directly determining the performance of whole system conventionally.Therefore, time signal accurately whether, be directly connected to daily life, commercial production and social development.Electronic product and electronic equipment with time clock feature appear in domestic and international market in recent years widely.Such as Olympic Games countdown display screen, railway security display screen, production line billboard, sports tournament clock screen, large-scale outdoor high brightness clock etc., this series products covers the industries such as bank, hospital, subway station, sports, TV station, supervisory system, high-lager building.The digitizing of clock, the intelligent research direction that has become modern digital clock; But, what clock chip inside adopted is crystal oscillator, therefore be subject to temperature, the impact of self crystal oscillator precision, can produce a fixing time difference while walking, the time has been grown, while walking, cumulative errors become large, adjustment need to manually carry out school time, has increased unnecessary trouble to user, is a urgent problem.

Summary of the invention

The purpose of this utility model is to provide the electronic clock of automatic correcting time.

Problem to be solved in the utility model is the deficiency of the easy parameter error of existing electronic clock.

The electronic clock of automatic correcting time, comprise civil power, transformer, rectification circuit, mu balanced circuit, filtering circuit, liquid crystal display, the first single-chip microcomputer, decoding chip, gps signal, second singlechip, shift register, charactron, keyboard and clock chip, described civil power, transformer, rectification circuit, mu balanced circuit, filtering circuit accesses the first single-chip microcomputer and second singlechip successively by wire, the first single-chip microcomputer is connected with liquid crystal display by signal wire, decoding chip, on second singlechip, be connected with shift register by signal wire, keyboard and clock chip, on shift register, be connected with charactron, on decoding chip, be connected with gps signal, gps signal is connected on telephone set or mobile phone.

Described decoding chip model is HT9032.

Described the first single-chip microcomputer and second singlechip model are STC89C58, and shift register model is 74LS164.

The utility model has the advantages that: can carry out the caller identification school of electronic clock by the gps signal of phone time, easily practical, time correction error can be controlled within 1 minute, should have the wide market space.

Brief description of the drawings

Fig. 1 is the schematic diagram of the electronic clock of the utility model automatic correcting time;

In figure: 1, civil power 2, transformer 3, rectification circuit 4, mu balanced circuit 5, filtering circuit 6, liquid crystal display 7, the first single-chip microcomputer 8, decoding chip 9, gps signal 10, second singlechip 11, shift register 12, charactron 13, keyboard 14, clock chip.

Embodiment

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

As shown in the figure, the electronic clock of automatic correcting time, comprise civil power 1, transformer 2, rectification circuit 3, mu balanced circuit 4, filtering circuit 5, liquid crystal display 6, the first single-chip microcomputer 7, decoding chip 8, gps signal 9, second singlechip 10, shift register 11, charactron 12, keyboard 13 and clock chip 14, described civil power 1, transformer 2, rectification circuit 3, mu balanced circuit 4, filtering circuit 5 access the first single-chip microcomputer 7 and second singlechip 10 successively by wire, thereby obtain galvanic current source; The first single-chip microcomputer 7 is connected with liquid crystal display 6, decoding chip 8 by signal wire, on second singlechip 10, be connected with shift register 11, keyboard 13 and clock chip 14 by signal wire, on shift register 11, be connected with charactron 12, on decoding chip 8, be connected with gps signal 9.

Described decoding chip 8 models are HT9032; Adopt the coding method of phase place continuous Binary Frequency Shift Keying, convert CII call identify index to FSK coding transmission, be characterized in that transformat is more complicated, but transmission information is many, except telephone number, can also the delivery time, the information such as date and name.

Described the first single-chip microcomputer 7 and second singlechip 10 models are STC89C58, and shift register 11 models are 74LS164.

Clock module adopts the clock chip 14DS12887 with RAM.This chip can carry out the counting of Hour Minute Second, has 100 calendars, and programmable interface also has warning function and power down hold function, and can carry out easily programmed control to it.DS12887A chip internal adopts quartz oscillator, and its chip precision is not more than 10ms/, and has complete clock alarm clock function, can be directly to it for showing or arranging, its software programming is simpler.Still can normally work under the emergency case such as the not enough or unexpected power down of line voltage for guarantee clock, chip internal comprises lithium battery.Even if system does not power on, when program is not carried out, lithium battery also can ensure the normal operation of chip, in order to the correct time is provided at any time.

STC89C58 controls whole system, and STC89C58 is the core component of main control module, and it accepts and output to LED by DS12887 data, realizes the demonstration of time; According to keyboard, input is called corresponding key and is processed subroutine, realizes the adjustment of time; Receive the data of STC89C54 input, carry out certain conversion, then output to light-emitting diode display and show.STC89C58 work is regulation and control and the assignment of all operations task.STC89C58 inside has a high-gain inverting amplifier to be used for forming oscillator, and the input end of this amplifier and output terminal are respectively pin XTALl and XTAL2.Adopt inner mode to produce, internal oscillator produces self-sustained oscillation.Timing element adopts the shunt-resonant circuit of electric capacity and quartz crystal composition.Can between 1.2～12MHz, select crystal oscillation frequency, select capacitance between 5～30pF, the large I of capacitance plays fine setting to frequency.

The TXD of STC89C58 chip is serial delivery outlet, and RXD is serial input mouth.When caller identification signal is demodulated after time signal by FSK decoding chip HT9032, be transferred to the RXD pin of clock part STC89C58 by the TXD pin of STC89C54, thus function while realizing caller identification time signal to the school of clock.

In this utility model also with reset circuit, the main function of reset circuit is whole system initialization, system auto-initiation in the time at every turn powering on, reset signal when powering on, system is provided, until system power supply stable after, cancel reset signal, sometimes for reliably, after power supply is stable, also to just cancel reset signal through certain time delay, can prevent like this shake causing in the combination of power switch or attaching plug and separation process and affect reset.If the process Program in program operation does not respond or need to carry out an initialization, also can be by realizing initialization by reset switch.

Described shift register 11 is the unidirectional shift register 11 of 8 bit serial input parallel outputs, for providing correct Presentation Function to charactron 12.

The using method of this device: when this electronic clock is received a GPS caller identification signal, decode by FSK decoding chip 8, obtain time data signal wherein, then while clock being carried out to school by the internal arithmetic of the first single-chip microcomputer 7 and second singlechip 10, make it can automatically adjust the demonstration of Time of Day, can reach error within 1 minute, practical reliable.

Claims

1. the electronic clock of automatic correcting time, comprise civil power (1), transformer (2), rectification circuit (3), mu balanced circuit (4), filtering circuit (5), liquid crystal display (6), the first single-chip microcomputer (7), decoding chip (8), gps signal (9), second singlechip (10), shift register (11), charactron (12), keyboard (13) and clock chip (14), it is characterized in that: described civil power (1), transformer (2), rectification circuit (3), mu balanced circuit (4), filtering circuit (5) accesses the first single-chip microcomputer (7) and second singlechip (10) successively by wire, the first single-chip microcomputer (7) is connected with liquid crystal display (6) by signal wire, decoding chip (8), second singlechip (10) is upper is connected with shift register (11) by signal wire, keyboard (13) and clock chip (14), on shift register (11), be connected with charactron (12), on decoding chip (8), be connected with gps signal (9).

2. the electronic clock of automatic correcting time according to claim 1, is characterized in that: described decoding chip (8) model is HT9032.

3. the electronic clock of automatic correcting time according to claim 1, is characterized in that: described the first single-chip microcomputer (7) and second singlechip (10) model are STC89C58, and shift register (11) model is 74LS164.