Take you into the LED lights in stereoscopic 3 d world

Led, brought a shock to the display industry, its low power consumption, more color, the price is low wait for an advantage gradually, more and more widely used in a variety of display devices. Visible everywhere in the street led to do business brand, even the back of the bus, taxi, with led display device, is used to display information such as advertising, especially the big led display at the quancheng square of jinan, which can be used to play all kinds of video and advertisement, impress me, and our main campus of shandong university, used the new stadium of led display, the effect is very fantasy, so it has good development prospects.

but these led application is limited to graphic display, the effect is not the best, now I have to do is to make stereo display led graphic display. As you can imagine, if the quancheng square led flat panel displays for stereoscopic display, will make our springs with dreamy color, give a person the feeling that find everything new and fresh. If used for commercial use is still a good choice, this kind of commercial brands will stay deeply in people's mind, to achieve the effect of brand publicity. It also can be used in teaching, especially those of solid geometry course, will bring students intuitive effect, this would be the cause of education. He also can be used in dance halls, KTV and other entertainment venues, and even personal entertainment, and so on. I believe that this must be a trend, it will have wide business prospects.

solution

one's whole function of the project overall function is to realize the stereoscopic 3 d display, aims to explore a new display solutions. Function as follows in a three-dimensional led dot matrix, by controlling the brightness of each pixel in the lattice, which shows a picture of the three-dimensional graphics. Then through rigorous sequential control, and the persistence of effect of human eyes, fast display a frame of a frame of image, to achieve the effect of a kind of dynamic display.

2 system the modules 1, scanning circuit working principle of the

due to direct port of the large number of I/O port control is necessary, an ordinary FPGA can better implementation, therefore this part we use is 74 ls138 built a scanning circuit to control.

our final design and using scanning circuit diagram as follows, Below for the simulation software of circuit diagram)

and the corresponding production good hardware circuit board ( Is this part of the circuit board only) As shown in the figure below,

2 shows part of the implementation of the working principle of the

here we adopted in line with expectations, is one of the 8 * 8 * 8 LED cube. The hardware circuit of the welding are all done manually. Accurately is realized by using the scanning circuit to control each LED light. Using procedures have LED to scan, we need the LED light up part of a pin to high level, a pin to low level, without the use of light LED by two pins are grounded, through such operation to realize the control of all the LED. And proper control can make the LED dot matrix display a certain three-dimensional graphics, we adopted the idea, realized to let it show some dynamic design, achieve the desired effect. Part of the

3, FPGA using FPGA to control LED scanning, to make it in accordance with a predetermined way to scan, LED, in turn, according to a certain pattern. Through the timing control and the persistence of effect of the human eye, will produce a kind of dynamic display effects. Main task is to control the FPGA timing, decided to display content.

　　4. Software

we thinking, it is to display content in a slice of ram, read through the timing control, thus realize the stereo display.

Bober

the Chinese illumination acad.