Background technology
Present traditional bar screen products mainly is made up of cell board, drive plate, Switching Power Supply, control panel and 16PIN winding displacement, with dataphone dual mode is arranged: the one, connect with the COM serial port of computer is wired by serial ports RS232; The 2nd, adopt wireless module, with the GSM network platform, the sending module of built-in wireless receiving module and computer and other modes is done wireless connections; Existing bar screen products weak point: 1, traditional bar screen integrated level is lower, parts are too much, volume is excessive blocked up, size does not have standard, the interface disunity, mobility is relatively poor, and RS232 serial ports transmission mode is on part notebook computer or new PC, can not reserve the flexibility ratio that the RS232 interface can have influence on equipment and computer on-line debugging, cause inconvenience; 2, gsm wireless transmission manner, though be not subjected to the restriction in time and space, flexible, the use cost in later stage is too high, SIM card Monthly Fee and flow allow ordinary consumer be difficult to accept.3, traditional bar screen is by the Switching Power Supply power taking, and no back-up source mainly is fixing by being its power supply, the portability that nothing still can be worked from civil power by civil power behind certain position of dress.
The utility model content
For addressing the above problem, the utility model provides a kind of screen integrated level height, volume is little, interface compatibility good, and provides reserve built-in rechargable power supplies, realizes frivolous portable portable LED display.
Portable LED display of the present utility model, comprise control panel, the dot matrix screen, the Information Selection button, button and rechargeable power supply are adjusted in brightness, be integrated with master chip on the described control panel, the PL-2303 chip, the AT24C128 chip, line scanning chip and column scan chip, described Information Selection button links to each other with the AT24C128 chip, described brightness is adjusted button and is connected with master chip, described rechargeable power supply links to each other with master chip, rechargeable power supply is provided with switch, rechargeable on-chip power has the high capacity ultra-thin lithium cell, described master chip respectively with the AT24C128 chip, the PL-2303 chip, line scanning chip and column scan chip carry out data communication, described master chip can call the character library information in the AT24C128 chip, described PL-2303 chip connects USB interface, and described line scanning chip and column scan chip are connected lighting of may command LED also respectively and extinguish with LED on the described dot matrix screen.
Portable LED display of the present utility model, described power supply adopts the built-in rechargeable power supply of reserve, is built-in with the high capacity ultra-thin lithium cell.
The beneficial effect of the portable LED display of the utility model is: 1, the utility model is the bar screen of high integration, control panel, drive plate, the Switching Power Supply of traditional bar screen are integrated on the pcb board, only form by lattice block element, electronic component and a circuit board, significantly reduced production cost, improved product circuit technology, electronic component adopts SMD surface mount elements, stable performance, production efficiency height more than 95%.2, the utility model adopts ultra-thin lithium cell, reduces the number of volume, realizes ultra-thin and ultra-light.What 3, the present invention adopted is the universal serial bus of USB, internationally recognized first-selected connectivity scenario, highly versatile.Can not be subjected to part computer PC does not have the restriction of RS232 interface, and USB is more flexible, uses the distinctive 5V constant voltage of USB interface simultaneously and charges for this product, for the product battery provides charging source more easily.4, the utility model adopts the built-in rechargeable power supply of reserve, and built-in high capacity ultra-thin lithium cell can reach 8 hours for product work is the longest, during need not just can work by any external power source, demonstrated fully its practicality and portability.
Embodiment
Below in conjunction with Figure of description the portable LED display of the utility model is described further.
Referring to Fig. 1, portable LED display of the present utility model, comprise control panel 1, dot matrix screen 2, Information Selection button 3, button 4 and rechargeable power supply 5 are adjusted in brightness, be integrated with master chip 11 on the control panel 1, PL-2303 chip 12, AT24C128 chip 13, line scanning chip 14 and column scan chip 15, master chip 11 adopts the ATMEGA88 chip, Information Selection button 3 links to each other with AT24C128 chip 13, brightness is adjusted button 4 and is connected with master chip 11, rechargeable power supply 5 links to each other with master chip 11, rechargeable power supply 5 is provided with switch 51, rechargeable power supply 5 is built-in with the high capacity ultra-thin lithium cell, master chip 11 respectively with AT24C128 chip 13, PL-2303 chip 12, line scanning chip 14 and column scan chip 15 carry out data communication, master chip 11 can call the character library information in the AT24C128 chip 13, PL-2303 chip 12 connects USB interface 6, and line scanning chip 14 and column scan chip 15 are connected lighting of may command LED also respectively and extinguish with LED on the described dot matrix screen 2.
The utility model external charge mode has two kinds: the one,, the USB interface charging adapter of employing 5V1A, the 2nd,, be connected charging with the PC computer USB by the usb data line.
At first at host computer Control Software and PL-2303 driver are installed, upper computer software is write by C Plus Plus, can be applicable to the country variant user and uses, in can freely switching, the dialog box of numerous, Korea Spro, day, English, 6 kinds of language versions of Russia.After online writing on the host computer PC, by the usb data line, the com port that debugging PL-2303 chip 12 commentaries on classics USB universal serial bus are distributed on PC outputs to slave computer, and PL-2303 chip 12 drives and provides official website can download gained by manufacturer.After the content of slave computer after AT24C128EPPROM is obtaining upper machine translation, distribute the IO port, thereby line scanning chip 14 and column scan chip 15 are scanned the demonstration that realizes dot matrix by master chip 11.
Button 4 is adjusted in brightness can adjust 25%, 50%, 75%, 100% brightness of four kinds of ranks successively, realizes this function, and the output services voltage by master chip 11 adjusting lithium batteries reaches change brightness, thereby also changes the working time of battery.Information Selection button 3 can manually select to store up 8 information in EPPROM, can carry out independent displaying to the 1-8 bar, only shows wherein one, does not do circulation, also can be to the demonstration that circulates of 1-8 bar.
Power switch 51 is used to control the management of battery, when switch 51 when opening, if input is arranged, then battery is charged, display screen automaticallyes switch and charging progress sign, if not input then is battery operated switch, display screen is an operate as normal.
The principle of work of portable LED display of the present utility model: after the switch energising, master chip 11 is started working, at first call the character library information in the AT24C128 chip 13, read the information that user storage is set then in MCU, with its lighting, extinguishing by the LED on line scanning chip 14 and the column scan chip 15 control dot matrix screens, according to the temporary principle of people's vision, literal and pattern that we want on screen, have just been obtained.
The portable LED display of the utility model is produced simply, is widely used, and is practical, is widely used in places such as reception counter of hotel, bar desk, company foreground, meeting room, table of the shop, showroom, shop door head, bank's show window, mansion passway.As showing: as welcome's word, suspend business, cross charging, special price merchant's crystalline substance, emergent reception, suddenly tightly indicate, notice, meeting prompting, bulletin, information announcement, electronic business card, shopping guide, guide, prompting, escape truck, night instruct etc.Can replace the effect of fixing printing sign on conventional desktop and the wall, pendulum board, direction board.
Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineering technical personnel in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.