CN206210308U - A kind of TFT LCDs - Google Patents

Abstract

The utility model provides a kind of TFT LCDs, including main control unit, liquid crystal display, setting unit, clock unit and temperature collecting cell, liquid crystal display, setting unit, clock unit and temperature collecting cell connect main control unit respectively, the temperature information that temperature collecting cell will be collected passes to main control unit, clock unit is shown by main control unit on liquid crystal display, clock unit is adjusted by setting unit, the utility model is reasonable in design, it is easy to use, can be more flexible from TFT liquid crystal displays, colorful display content, display effect is good, there is good application prospect.

Description

A kind of TFT LCDs

Technical field

The utility model is specifically related to a kind of TFT LCDs.

Background technology

Electronic equipment is both provided with display screen mostly now, and existing display screen is shown using common solid color mostly Display screen, and Showing Effectiveness On Screen is bad, can only achieve display effect, shows dull, and environment temperature can not be shown, Although cheap, the use demand of people still can not be met, be badly in need of a kind of new colorful display screen.

Utility model content

The purpose of this utility model is to solve above-mentioned deficiency, there is provided a kind of TFT LCDs.

The purpose of this utility model is achieved through the following technical solutions：

A kind of TFT LCDs, including main control unit, liquid crystal display, setting unit, clock unit and temperature are adopted Collection unit, liquid crystal display, setting unit, clock unit and temperature collecting cell connect main control unit, temperature acquisition respectively The temperature information that unit will be collected passes to main control unit, and clock unit is shown by main control unit on liquid crystal display Out, clock unit is adjusted by setting unit.

Liquid crystal display uses TFT liquid crystal displays.

Main control unit uses STC89C54 singlechip chips.

Temperature collecting cell uses DS18B20 digital thermometers.

The utility model has following beneficial effect：

The utility model is reasonable in design, easy to use, display content that can be more flexible, colorful from TFT liquid crystal displays, Display effect is good, there is good application prospect.

Brief description of the drawings

Fig. 1 is overall structure diagram of the present utility model；

Fig. 2 is liquid crystal display circuit diagram of the present utility model；

Fig. 3 is clock unit circuit diagram of the present utility model；

Fig. 4 is temperature collecting cell circuit diagram of the present utility model；

Fig. 5 is setting unit circuit diagram of the present utility model.

Specific embodiment

The utility model is further described below in conjunction with the accompanying drawings：

As shown in figure 1, a kind of TFT LCDs, including main control unit, liquid crystal display, setting unit, clock list Unit and temperature collecting cell, liquid crystal display, setting unit, clock unit and temperature collecting cell connect master control list respectively Unit, the temperature information that temperature collecting cell will be collected passes to main control unit, and clock unit is by main control unit in liquid crystal Show and shown on unit, clock unit is adjusted by setting unit.

Liquid crystal display uses TFT liquid crystal displays.

Main control unit uses STC89C54 singlechip chips.

Temperature collecting cell uses DS18B20 digital thermometers.

Operation principle：By single-chip microcomputer can control whole system, including read DS18B20 chips temperature data, read/ The calendar clock data of DS1302 chips are write, has detected whether that button is pressed and operated accordingly, finally will also be to aobvious Show that driving chip writes data, to cause that required content can be shown on TFT liquid crystal displays.

As shown in Fig. 2 liquid crystal display uses ILI9325 chips.The chip can support 320 × 240 (QVGA) resolution ratio, while the RAM of built-in 173KB, therefore it can show 260,000 colors.The interface mode that ILI9325 is supported has 8/9/16/18 i80 system bus, spi bus, rgb interface and VSYNC interfaces.Its bus type interface circuit mode is handle Liquid crystal display regards the data storage of outside as, and it accesses liquid crystal display just as accessing a unit one of data storage Sample, adopts the bus read-write capability advantage that can give full play to single-chip microcomputer in this way, and be easy to upgrade and extend.Except P0 mouthfuls of use Make beyond 8 BITBUS networks transmission data, in addition it is also necessary to which 5 extra I/O ports are used separately as piece choosing (CS) of driving chip, reset (RESET), command/data selection position (RS), write-in position (WR) and reading position (RD).

As shown in figure 3, clock unit circuit is mainly made up of DS1302 chips.DS1302 is trickle charge clock chip. The chip includes the static RAM of a real-time clock/calendar and 31 bytes, can be carried out by simple serial line interface with single-chip microcomputer Communication.The chip can provide the second, point, when, day, the date, the moon, the information such as year, number of days and the number of days in leap year monthly can be mended automatically Repay, and can calculate by 2100.Simply can be communicated using synchronous serial mode between DS1302 and single-chip microcomputer, and only Reset (RES), I/O mouthfuls, three mouth lines of SCLK serial clocks need to be used.Power consumption when DS1302 works is very low, its dual power supply pipe Pin can be used for main power source and backup battery supply, and can add seven memories of byte for programmable trickle charge power supply.

As shown in figure 4, temperature collecting cell uses DS18B20 digital thermometers, it is only necessary to which a port can complete data Reading and write-in；Each DS12B20 chip has a unique sequence number, therefore, it can on a data line Carry multiple chip；Measurement temperature scope is between -55 DEG C to 125 DEG C；The resolution ratio of digital thermometer can select 9 to 12 Position；The bound of alarm temperature can be set.

As shown in figure 5, the major function of setting unit is to set to current time and date time and date.The design Only need to complete the function by using 3 buttons.First button is used to select the content of change, i.e., press the button for the first time When, clock stops and a designator occurs, and the designator points to second position, often presses the button later, and system will be according to Secondary poll point, when, day, the moon, year, week, such user just can change system time and date, be elected to after week, again First button is pressed, then clock is continued to run with from the time of setting again and designator disappears.Two other button plays "+", The effect of "-", is available for being used when user's regulating time and date.It should be noted that "+" only is pressed in adjustment state, "-" button can just work.

Claims (4)

1. a kind of TFT LCDs, including main control unit, liquid crystal display, setting unit, clock unit and temperature acquisition Unit, it is characterised in that：Liquid crystal display, setting unit, clock unit and temperature collecting cell connect main control unit respectively, The temperature information that temperature collecting cell will be collected passes to main control unit, and clock unit is by main control unit in liquid crystal display list Shown in unit, clock unit is adjusted by setting unit.

2. a kind of TFT LCDs according to claim 1, it is characterised in that：Described liquid crystal display is used TFT liquid crystal displays.

3. a kind of TFT LCDs according to claim 1, it is characterised in that：Described main control unit is used STC89C54 singlechip chips.

4. a kind of TFT LCDs according to claim 1, it is characterised in that：Described temperature collecting cell is used DS18B20 digital thermometers.