CN201681540U

CN201681540U - Clock-type calendar with temperature measuring function

Info

Publication number: CN201681540U
Application number: CN2010202070519U
Authority: CN
Inventors: 管湘芸
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-28
Filing date: 2010-05-28
Publication date: 2010-12-22
Anticipated expiration: 2020-05-28

Abstract

The utility model provides a clock-type calendar with a temperature measuring function, which belongs to the technical field of daily articles, and comprises a temperature sensor module, a single-chip microcomputer module, an LCD display module and a button module, wherein the single-chip microcomputer module is respectively connected with the temperature sensor module, the LCD display module and the button module. While realizing the calendar, the utility model has a function of quite precisely measuring the temperature. Simultaneously, because all elements in the system can work under the condition of 3V, two No. 5 batteries or one button battery (CR2032 and the like) can be adopted to supply powder so that the miniaturization of the system becomes possible. Simultaneously, the system wakes up a sleeper at the frequency of 2Hz, works with quite a high system lock after waking up, thereby greatly reducing the power consumption of the system and significantly prolonging the working hours of the batteries.

Description

A kind of clock type perpetual calendar with temp sensing function

Technical field:

The utility model relates to a kind of clock type perpetual calendar with temp sensing function, belongs to technical field of living goods.

Background technology:

Perpetual calendar in the market and clock product variety are more, but all exist function singleness, power consumption big, carry problem such as difficulty.

Summary of the invention

Goal of the invention:

The purpose of this utility model is the defective at above background technology, and a kind of TV remote controller with temp sensing function is provided.

Technical scheme:

A kind of clock type perpetual calendar with temp sensing function comprises temperature sensor module, one-chip computer module, LCD display module and key-press module, and wherein one-chip computer module is connected with temperature sensor module, LCD display module and key-press module respectively.

Further, one-chip computer module is EM78P468N in the clock type perpetual calendar of band temp sensing function of the present utility model, also comprises 32768Hz RTC crystal oscillating circuit and LCD driving circuit.

Further, temperature sensor module is thermometric chip DS18B20 in the clock type perpetual calendar of band temp sensing function of the present utility model.

Further, the COM port of LCD display is 1 to 4 in the clock type perpetual calendar of band temp sensing function of the present utility model.

Beneficial effect:

The utility model has comparatively exact temperature measurement function when realizing perpetual calendar.Simultaneously, because all components and parts all can be operated under the 3V condition in the system, then can adopt No. 5 batteries of 2 joints or 1 joint button cell (CR2032 etc.) power supply, for system's miniaturization provides possibility.Simultaneously, system is with the frequency sleep awakening of 2Hz, promptly with the operation of higher system clock, reduced the power consumption of system to a great extent after waking up, significant prolongation the service time of battery.

Description of drawings:

Fig. 1 is a system chart of the present utility model.

Specific embodiments:

Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme:

As shown in Figure 1, the clock type perpetual calendar of band temp sensing function of the present utility model, comprise temperature sensor module, one-chip computer module, LCD display module and key-press module, wherein one-chip computer module is connected with temperature sensor module, LCD display module and key-press module respectively.

One-chip computer module: one-chip computer module comprises main MCU, power-supplying circuit, reset circuit, RTC crystal oscillator and PLL frequency multiplication electric capacity, LCD driving circuit and interface circuit.The EM78P468N that the system master single-chip microcomputer adopts Taiwan Yi Long company to produce, built-in 32768Hz RTC crystal oscillating circuit and LCD driving circuit.But the external capacitor element realizes that the PLL vibration is to provide system's major clock.The COM port of LCD driving circuit is 4, and the SEG port mostly is 32 most.

Key-press module: key-press module utilizes 8 input port P60-P67 of MCU to realize button.These input ports all have internal pull-up resistor.

Temperature sensor module: temperature sensor module utilizes DS18B20 to realize temperature survey.By the 1-wire line gained data are sent to main MCU and handle, must add a pull-up resistor on the 1-wire line to obtain final temperature data.

A thermometric chip DS18B20 that temperature sensor selects for use U.S. Maxim company to produce.Temperature-measuring range is-55 ℃～+ 125 ℃.12 Binary Conversion results guarantee ± 0.5 ℃ precision and 0.0625 ℃ resolution.Digital interface, the MCU sequential operation is convenient.

After powering on, main control MCU is carried out initialization to system.LCD display system initial time information.Utilize DS18B20 to realize thermometric simultaneously, data are presented at temperature on the lcd screen after main control MCU is handled.After this, system also constantly refreshes real-time clock with frequency operation between sleeping, waking up of 2Hz.Temperature survey can according to circumstances be carried out the time interval and adjust (10 seconds-60 seconds, stepping is 5 seconds).

In system's operational process, the user can adjust the time by button, and system then calculates week automatically according to the date information later of adjusting and shows.The unit that temperature shows can be as required degree centigrade and degrees Fahrenheit between switch.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. clock type perpetual calendar with temp sensing function, it is characterized in that: comprise temperature sensor module, one-chip computer module, LCD display module and key-press module, wherein one-chip computer module is connected with temperature sensor module, LCD display module and key-press module respectively.

2. the clock type perpetual calendar of band temp sensing function according to claim 1 is characterized in that: described one-chip computer module is EM78P468N, also comprises 32768Hz RTC crystal oscillating circuit and LCD driving circuit.

3. the clock type perpetual calendar of band temp sensing function according to claim 1 is characterized in that: described temperature sensor module is thermometric chip DS18B20.

4. the clock type perpetual calendar of band temp sensing function according to claim 1 is characterized in that: the COM port of described LCD display is 1 to 4.