LED electronic display scanning mode and principle introduction
At present, the driving methods of led display on the market include static scanning and dynamic scanning. Static scanning is divided into static real pixels and static virtual. Dynamic scanning is also divided into dynamic real image and dynamic virtual. The driving device is generally made of domestic hc595, Taiwan mbi5026. , Japan Toshiba tb62726, generally have 1/2 sweep, 1/4 sweep, 1 / 8 sweep, 1 / 16 sweep.
OVERVIEW
Phlizon LED Grow Light bars made in the China, full spectrum led grow light bars for plants growing,designed specifically for use as supplemental greenhouse lighting. 4 bars,6 bars ,8 bars 10 bars ,12 bars for choice.Adjustable bar quantity to make much more convenient repair and replacement in the future
FEATURES
High power branded Samsung chip with high Par Value
Light distributed evenly in every spot and cover larger area
Full-cycle spectrum optimized for rapid growth and complete plant development
Full spectrum for different period of growth
Customizable spectrum ,any spectrum can be OEM/ODM,at any stage of growth accordingly
Passive cooling (no fans),Aluminum material and heat-dissipation design.
APP WiFi to make operation.Standard without dimming, dimming with different PPFD.
Energy Saving, environmental friendly
Suitable for a wide range of vertical farming lighting applications like vegetables, herbs in shelfs or CC racks.
3-5 Year Warranty
Applications
Hydroponics, Horticulture, Agriculture and Greenhouse
Locations: Farm, Exhibition, Garden, Home, Urban, Bonsai, and University Lab
Growth of Fruits, Vegetables, Flowers and so on
Seeding, Rooting, Breeding, Flowering and Fruiting period
LED display scanning mode definition: the ratio of the number of rows lit at the same time to the number of rows in the entire area in a certain display area.
Indoor single color: generally 1/16 scan,
Indoor full color: generally 1/8 scan,
Outdoor single color: generally 1/4 scan,
Outdoor full color: generally static scanning.
For example, a commonly used full-color module pixel is 168 (2r1g1b). If driven by mbi5026, the total number of LEDs used by the module is: 168*(2+1+1)=512, and mbi5026 is a 16-bit chip. 512/16=32
1, if you use 32 to accumulate 5020 chips, it is static virtual
2, if you use 16 to accumulate 5020 chips, it is dynamic 1/2 sweep virtual
3, if you use 8 to accumulate 5020 chips, it is dynamic 1/4 scan virtual
If there are two red lights on the board
4, with 24 accumulation 5020 chip, is a static real pixel
5, with 12 accumulation of 5020 chips, is dynamic 1/2 sweeping pixels
6, with 6 accumulation of 5020 chip, is a dynamic 1/4 scan pixel
In the led unit board, the scanning mode is 1/16, 1/8, 1/4, 1/2, static. What if it is different? One of the easiest ways is to count the number of leds on the cell board and the number of 74hc595.
Calculation method: the number of led divided by the number of 74hc595 and divided by 8 = a fraction of a scan
Real pixels correspond to virtual: In simple terms, real pixel screens refer to the red, green, and blue colors that make up the display. Each of the three types of light-emitting tubes ultimately participates in imaging of only one pixel to obtain sufficient brightness.
The virtual pixel is a software algorithm that controls the LED of each color to finally participate in the imaging of a plurality of adjacent pixels, so that a larger resolution can be achieved with fewer lamps, and the display resolution can be quadrupled.
As the brightness of LED electronic displays continues to increase and the size becomes smaller, more LED electronic displays will enter the room. However, the increase in LED brightness and pixel density has brought new and higher requirements to the control and driving of the LED screen. As far as the general indoor screen is concerned, the general control method now adopts the rank and sub-control mode, which is commonly called the scan mode. At present, the drive mode of the LED electronic display screen has two types: static scan and dynamic scan. For static real pixels and static virtual, dynamic scanning is also divided into dynamic real image and dynamic virtual; in the LED electronic display, the ratio of the number of rows lit at the same time to the number of rows in the entire region is called the scanning mode. The scan is also divided into 1/2 sweep, 1/4 sweep, 1/8 sweep, 1/16 sweep and other driving methods. That is to say, the display mode of the display is different, then the setting of the receiving card is also different. If the receiving card is originally used on a 1/4 scan screen and is now used on a static screen, the display on the display will be one line apart. Generally, the receiving card can be set, and the main components such as the sending card, display screen, and computer can be connected to the relevant software for setting.
First, LED electronic display scanning method:
1. Dynamic scanning: Dynamic scanning is to perform “point-to-column†control from the output of the driver IC to the pixel. Dynamic scanning requires a control circuit, and the cost is lower than static scanning, but the display effect is poor, and the brightness loss is large. .
2, static scanning: static scanning is from the output of the driver IC to the pixel point to implement "point-to-point" control, static scanning does not require control circuitry, the cost is higher than dynamic scanning, but the display effect is good, stability, brightness loss Smaller and so on.
Second, the LED electronic display 1/4 scan mode works:
It is the time that each line of power supply V1-V4 is turned on by 1/4 according to the control requirement in one frame of image. This has the advantage of making more efficient use of the display characteristics of the LEDs and reducing hardware costs. The disadvantage is that in one frame of image, each row of LEDs can only display 1/4 of the time.
Third, according to the LED electronic display type scanning method classification:
1. Scanning mode of indoor full-color LED electronic display: P4 and P5 are constant current 1/16, P6 and P7.62 are constant current 1/8.
2. Scanning mode of outdoor full-color LED electronic display: P10 and P12 are constant current 1/2 and 1/4, and P16, P20 and P25 are static.
3, single and double color LED electronic display scanning mode is mainly constant current 1/4, constant current 1 / 8 sweep, constant current 1 / 16 sweep
Safety FCC ETL Certified and IP54 Rated.Passive cooling,extrusion pure aluminum can 100% ensure heat dissipation. Plants will grow better under the Full Spectrum LED Grow Lights, as well their yield. will increase hugely.
PH-B10,800W Led Grow Light,800W Grow Light,800 Watt Grow Light,Led Grow Light Multiple Bars
Shenzhen Phlizon Technology Co.,Ltd. , https://www.szledaquariumlighting.com