CN202631990U

CN202631990U - Electronic clock circuit

Info

Publication number: CN202631990U
Application number: CN 201220139685
Authority: CN
Inventors: 张伟夫; 樊冬杰
Original assignee: QIDONG AIPU ELECTRICAL APPLIANCES CO Ltd
Current assignee: Epp Vehicles Co ltd
Priority date: 2012-04-05
Filing date: 2012-04-05
Publication date: 2012-12-26
Anticipated expiration: 2022-04-05

Abstract

The utility model discloses an electronic clock circuit, which comprises a micro-control unit and a clock circuit. The electronic clock circuit is characterized in that the micro-control unit is connected with a power conversion circuit, a nixie tube display module and a temperature and humidity sensor module. The clock circuit comprises a power switching circuit, a low-voltage detection circuit, a real-time clock circuit and a serial NVSRAM. The power switching circuit is connected with the power conversion circuit, the low-voltage detection circuit and a battery. The low-voltage detection circuit is connected with the real-time clock circuit. The real-time clock circuit is connected with a clock adjustment register, an oscillating circuit, a timer interruption unit and the micro-control unit. The serial NVSRAM is connected with the micro-control unit. The electronic clock circuit is high in packing density, while electronic products equipped with the electronic clock circuit are small in volume, light in weight, high in reliability, strong in anti-vibration capability, low in the defect rate of welding spots and good in high-frequency characteristics. Meanwhile, electromagnetic and radio frequency interferences are reduced, so that the service life of electronic products is greatly prolonged. The production efficiency is improved and the cost is reduced. In addition, the consumption of materials, energy resources, equipment, manpower and time is saved.

Description

Electronic clock circuit

Technical field

The utility model relates to the time set field, relates in particular to a kind of electronic clock circuit.

Background technology

Electronic clock be a kind of utilize digital circuit show second, branch, the time time set, compare with traditional mechanical clock, it has advantages such as punctual timing, intuitive display, nothing machinery gearing, thereby is used widely.The continuous improvement of Along with people's living environment and beautifying; Electronic clock is in factory floor, business window, service hall, hotel or widespread use on pony car, big bus; But no matter any all have its weak point, the electronic clock that perhaps uses is multiple functional, and intelligent hommization is considered more; But display brightness is not enough, can only use in closely among a small circle little space; Or can use on the motor bus than long spacing, but its technology is not good, all adopts big device, more rough straight cutting device to weld, and the life-span is weakened greatly.

Therefore, be badly in need of a kind of improved technology and solve existing this problem in the prior art.

The utility model content

The purpose of the utility model provides a kind of electronic clock circuit.

The technical scheme that the utility model adopts is:

Electronic clock circuit; Comprise micro-control unit and clock circuit; Said micro-control unit connects power-switching circuit, charactron display module and Temperature Humidity Sensor module; Said clock circuit comprises power supply switch circuit, low-voltage testing circuit, real time clock circuit and serial NVSRAM, and said power supply switch circuit connects power-switching circuit, low-voltage testing circuit and battery, and said low-voltage testing circuit connects real time clock circuit; Said real time clock circuit connects clock adjustment register, oscillatory circuit, timing interruption and micro-control unit, and said serial NVSRAM connects micro-control unit.

The utility model has the advantages that: packing density is high, the electronic product volume is little, in light weight; Reliability is high, the antivibration ability is strong, the welding point defect rate is low, and high frequency characteristics is good, has reduced electromagnetism and Radio frequency interference (RFI); Life of product has been had greatly to be improved; Enhance productivity, reduce cost, save material, the energy, equipment, manpower, time.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Fig. 1 is the circuit theory diagrams of the utility model.

Wherein: 1, micro-control unit, 2, clock circuit, 3, power-switching circuit, 4, the charactron display module; 5, Temperature Humidity Sensor module, 6, power supply switch circuit, 7, low-voltage testing circuit; 8, real time clock circuit, 9, serial NVSRAM, 10, battery; 11, clock adjustment register, 12, oscillatory circuit, 13, regularly interrupt.

Embodiment

As shown in Figure 1, the electronic clock circuit of the utility model comprises micro-control unit 1 and clock circuit 2; Said micro-control unit 1 connects power-switching circuit 3, charactron display module 4 and Temperature Humidity Sensor module 5, and said clock circuit 2 comprises power supply switch circuit 6, low-voltage testing circuit 7, real time clock circuit 8 and serial NVSRAM9, and said power supply switch circuit 6 connects power-switching circuit 3, low-voltage testing circuit 7 and battery 10; Said low-voltage testing circuit 7 connects real time clock circuits 8, and said real time clock circuit 8 connects clocks adjustment registers 11, oscillatory circuit 12, regularly interrupts 13 and micro-control unit 1, and said serial NVSRAM9 connects micro-control unit 1; Packing density is high, the electronic product volume is little, in light weight; Reliability is high, the antivibration ability is strong, the welding point defect rate is low, and high frequency characteristics is good, has reduced electromagnetism and Radio frequency interference (RFI); Life of product has been had greatly to be improved; Enhance productivity, reduce cost, save material, the energy, equipment, manpower, time.

The power unit circuit adopts direct insertion device, makes the relative paster of heat radiation that preferable effect arranged, and has exempted transient peak voltage, system switching noise and EMI etc. and has made the mutual disturbing effect between this product and the power-supply unit; Master controller and clock chip also adopt dual-in-line package directly to be soldered on the wiring board; Guaranteed that like this product has certain anti-overload ability; Prolonged the serviceable life of device and even product simultaneously; And the mode of directly welding reduces the arrangement height of element significantly, and the pin of components and parts is shorter simultaneously, is applicable to the circuit higher than frequency of operation; All the other peripheral circuits adopt SMD technology.

Clock circuit 2 built-in rechargeable batteries 10 surpass six months in the time of under the situation that battery 10 completely fills, can guaranteeing that internal clocking is walked, the accumulative total electric weight surpasses 550mhA, and 10 serviceable lifes of battery are five to eight years.

This built-in chip type clock adjustment register 11; Has clock accuracy numeral adjustment function; Can be in very wide scope the deviation (resolving power 3ppm) of position; Can set the adjusted value that adaptive temperature changes through external Temperature Humidity Sensor module 5, be implemented in high-precision clocking capability in the wide temperature range.

Adopt the 24V/12V power supply all can supply power.

Adopt 24 hours systems or 12 hours systems, can revise voluntarily as required, there is the power down memory function inside, generally can reach more than 8 years.This product accurate timing, a year error rate is no more than 1min.

This product can show date, time, Celsius temperature, relative humidity, have the accuracy of timekeeping height, display screen is big, brightness is even, font is clear, bright in luster eye-catching, shock resistance good, voltage adaptation property is strong, visual range is far away, advantage such as easy for installation, aesthetic in appearance.

Claims

1. electronic clock circuit; Comprise micro-control unit and clock circuit; It is characterized in that: said micro-control unit connects power-switching circuit, charactron display module and Temperature Humidity Sensor module; Said clock circuit comprises power supply switch circuit, low-voltage testing circuit, real time clock circuit and serial NVSRAM, and said power supply switch circuit connects power-switching circuit, low-voltage testing circuit and battery, and said low-voltage testing circuit connects real time clock circuit; Said real time clock circuit connects clock adjustment register, oscillatory circuit, timing interruption and micro-control unit, and said serial NVSRAM connects micro-control unit.