CN207115918U

CN207115918U - Split screen device, combination of liquid crystals display screen under single-chip microcomputer control

Info

Publication number: CN207115918U
Application number: CN201720700983.9U
Authority: CN
Inventors: 周微; 马雪峰
Original assignee: Changzhou Vocational Institute of Mechatronic Technology
Current assignee: Changzhou Vocational Institute of Mechatronic Technology
Priority date: 2017-06-15
Filing date: 2017-06-15
Publication date: 2018-03-16
Anticipated expiration: 2027-06-15

Abstract

Split screen device, the combination of liquid crystals display screen under a kind of single-chip microcomputer control are the utility model is related to, wherein well-behaved screen device includes：Processor module, the display module being connected with the processor module；Wherein described processor module is suitable to display module setting multiple interfaces, and carries out split screen switching display by split screen button；Split screen device of the present utility model, combination of liquid crystals display screen, by chip microcontroller, the switching control in turn of multi-screen, this programme use single-chip microcomputer, have the advantages of simple in construction, good reliability.

Description

Split screen device, combination of liquid crystals display screen under single-chip microcomputer control

Technical field

The utility model belongs to single-chip microcomputer and the intelligent control technology of liquid crystal display, and in particular under a kind of single-chip microcomputer control LCD MODULE split screen device.

Background technology

LCD MODULE has small volume, low in energy consumption, light weight and programmable etc. excellent as a kind of electron display device Point, most of liquid crystal display, controller, RAM, ROM etc. are concentrated on pcb board, referred to as LCD MODULE.It is many at present to answer The different screen content of liquid crystal display is needed with occasion, therefore split screen display available control is an important content.

Utility model content

The purpose of this utility model is to provide a kind of split screen device, combination of liquid crystals display screen.

In order to solve the above-mentioned technical problem, the utility model provides a kind of split screen device, including：

Processor module, the display module being connected with the processor module；Wherein described processor module is suitable to will display Module sets multiple interfaces, and carries out split screen switching display by split screen button.

Further, the display module is communicated with processor module using parallel schema, and the LCM of display module is hung It is connected in the bus of processor module, i.e. the corresponding I/O port of the processor module RS ends, R/W ends and ENAB with display module respectively End is connected, and remaining corresponding I/O port of processor module is connected with the DB0-DB7 ends of display module respectively.

Further, the processor module is suitable to switch corresponding flag bit by split screen button to select corresponding interface, And the interface is four, that is, set corresponding No. 1 interface of flag bit 00；Set corresponding No. 2 interfaces of flag bit 01；Set flag bit 10 corresponding No. 3 interfaces；And corresponding No. 4 interfaces of setting flag bit 11.

Another aspect, the utility model additionally provide a kind of combination of liquid crystals display screen.

The combination of liquid crystals display screen includes：Combined and formed by the split screen device described in several, will respectively distribute dress Each display module in putting is spliced, to form combination of liquid crystals display screen.

Further, the split screen device is provided with toggle switch, and it is main frame to set a split screen device by toggle switch, remaining Split screen device is slave；The processor module of each split screen device is respectively connected with CAN communication module, realizes principal and subordinate's CAN communication, passes through Main frame connects split screen button and is allocated control, to realize each split screen device synchronization split screen switching display.

The beneficial effects of the utility model are, split screen device of the present utility model, combination of liquid crystals display screen, pass through single-chip microcomputer The switching control in turn of multi-screen is realized, this programme uses single-chip microcomputer, has the advantages of simple in construction, good reliability.

Brief description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the circuit theory diagrams of split screen device of the present utility model；

Fig. 2 is split screen control software flow chart of the present utility model.

Fig. 3 is the schematic block circuit diagram of combination of liquid crystals display screen of the present utility model.

Embodiment

The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.

Embodiment 1

As shown in figure 1, the present embodiment 1 provides a kind of split screen device, including：Processor module, with the processor module Connected display module；Wherein described processor module is suitable to display module setting multiple interfaces, and is entered by split screen button The switching display of row split screen.

Wherein described processor module such as, but not limited to uses AT89S51 single-chip microcomputers, and the display module is for example but not It is limited to use Liquid Crystal Module TS1620-1.

TS1620-1 is character type display module, and several 5*7 dot characters are arranged on liquid crystal board and show position, Mei Gexian Show that position can show a character.Interface shares two rows, and often row can show 16 characters.There are 192 kinds of kinds of characters in internal memory, Such as English upper and lower case letter, numeral and mark etc., different characters can be shown according to different code displayings.

There are 14 lead ends on TS1620-1 PCB, wherein 8 data lines, 3 control lines, 3 power lines, refer to table 1.When being connected with 89S51, display mode and display content can be elected by being sent into data and instruction.

Table 1TS1620-1 pins define

The display module is communicated with processor module using parallel schema, and by the LCM of display module, (LCD is shown Driving interface) be articulated in the bus of processor module, i.e., the corresponding I/O port of processor module respectively the RS ends with display module, R/W ends are connected with ENAB ends, and remaining corresponding I/O port of processor module is connected with the DB0-DB7 ends of display module respectively.

Communicated specifically, TS1620-1 realizes with 89S51 in parallel mode, LCM is articulated in 89S51 bus in design On, RS, R/W, ENAB are controlled respectively using P2.4, P2.5, P2.6 of single-chip microcomputer, LCM data wire DB0-DB7 and single-chip microcomputer P0-P7 be connected.Interface circuit figure is shown in Fig. 1.RS and R/W determines mask register number and operation species in TS1620-1.RS= 0, R/W=0, complete command register write-in；RS=0, R/W=1, complete busy mark and address counter and read；RS=1, R/W =0, complete data register write-in；RS=1, R/W=1, completing data register and read, ENAB is enable signal port, under The triggering of drop edge.

As shown in Fig. 2 the processor module is suitable to switch corresponding flag bit by split screen button to select corresponding boundary Face, namely each page have the fixed signal position of oneself.When performing liquid crystal display program, liquid crystal indicating is first determined whether The state of will position, the corresponding page is shown according to flag bit, the optional interface is four, that is, sets flag bit 00 corresponding 1 Number interface；Set corresponding No. 2 interfaces of flag bit 01；Set corresponding No. 3 interfaces of flag bit 10；And setting flag bit 11 corresponding 4 Number interface.

The split screen button can use four buttons, as shown in figure 1, button K1-K4, complete the switching work(of manual split screen Can, K1 buttons are pressed, are switched to No. 1 interface display, K2 is pressed and shows No. 2 interface contents, by that analogy, physical circuit is shown in attached Figure.

Also, the processor module is also provided with communication interface with pc (P1.4 and P1.5), upper to connect Machine control signal, split screen control can be realized by host computer.

Well-behaved screen device can be conveniently accomplished the switching (namely split screen) of screen, while devise manually and automatically work( Energy.

In hardware circuit design, TS1620-1 data wire is directly articulated on P0 ports and utilizes single-chip microcomputer P2 mouth controls Tri- ports of its RS, R/W, ENAB are made, it is convenient, flexibly, bus resource is saved, whole circuit is practical, succinct, and reliability is high. In software split screen method, the interface of display is judged using the mode of flag bit is set, complete split screen display available and make whole Program has clearly logicality.

The anti-interference of well-behaved screen device uses watchdog chip, i.e. door dog chip X25045 can ensure that system is normally transported OK, if there is operation troubles, then system forced resetting.

Embodiment 2

As shown in figure 3, on the basis of embodiment 1, the present embodiment 2 provides a kind of combination of liquid crystals display screen.

The combination of liquid crystals display screen is made up of several split screen device combinations as described in Example 1, will be each point Spliced with each display module in device, to form combination of liquid crystals display screen.

The split screen device is provided with toggle switch, and it is main frame to set a split screen device by toggle switch, and remaining split screen fills It is set to slave；The processor module of each split screen device is respectively connected with CAN communication module, realizes principal and subordinate's CAN communication, passes through main frame institute Even split screen button is allocated control, to realize each split screen device synchronization split screen switching display.

The CAN communication module such as, but not limited to uses Risym MCP2515.

Be applied in combination by well-behaved screen device, using well-behaved screen device it is simple in construction the advantages of, reduce group on the whole Close the fault rate of LCDs.

Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right Property scope.

Claims

A kind of 1. split screen device, it is characterised in that including：

Processor module, the display module being connected with the processor module；Wherein

The processor module is suitable to display module setting multiple interfaces, and carries out split screen switching display by split screen button.
2. split screen device according to claim 1, it is characterised in that

The display module is communicated with processor module using parallel schema, and the LCM of display module is articulated in into processor In the bus of module, i.e.,

The corresponding I/O port of processor module is connected with the RS ends, R/W ends and ENAB ends of display module respectively, and

The corresponding I/O port of remaining of processor module is connected with the DB0-DB7 ends of display module respectively.
3. split screen device according to claim 2, it is characterised in that

The processor module is suitable to switch corresponding flag bit by split screen button to select corresponding interface, and the interface is Four, i.e.,

Set corresponding No. 1 interface of flag bit 00；

Set corresponding No. 2 interfaces of flag bit 01；

Set corresponding No. 3 interfaces of flag bit 10；And

Set corresponding No. 4 interfaces of flag bit 11.
A kind of 4. combination of liquid crystals display screen, it is characterised in that

It is made up of several split screen device combinations as claimed in claim 1, i.e.,

Each display module in each distributor is spliced, to form combination of liquid crystals display screen.
5. combination of liquid crystals display screen according to claim 4, it is characterised in that

The split screen device is provided with toggle switch, and it is main frame to set a split screen device by toggle switch, and remaining split screen device is Slave；

The processor module of each split screen device is respectively connected with CAN communication module, realizes principal and subordinate's CAN communication,

Split screen button is connected by main frame and is allocated control, to realize each split screen device synchronization split screen switching display.