【 Weak current College 】 digital mosaic wall key equipment-DLP optical engine module smart dual lamp backup technology comparison

<br> <br> 1. dual lamp mode is a trend <br> In recent years, the DLP big-screen projection machine began the design of dual-lamp, because many of the large screen is 24 hours of use, do not .damage any moment be rectified, advanced countries such as Europe, Japan, almost no single lamp market, manufacturers for a dual-lamp design has its own specialization, therefore available dual lamp design a so-called cold backup with hot backup differences, this article .here for two different design of an objective analysis, allowing users to choose the most suitable when you can have a choice. <br> 2. the benefits of dual-lamp design <br> DLP Projection machine, light bulbs, energy supplies are typically .life in 4000 to 10000 hours, because the old bulb is very high technology products, if you use in a 24 hours a day use, the lamp may shorten the life of the lamp or explosion, so if you have a dual-lamp alternate use .or burst when alternate replacement lamp, immediately back to work, there is a big advantage. <br> 3, dual lamp design a common method <br> Cold backup design: cold backup typically use mechanical change light body, some people use linear mobile ., the mobile use of rotation, someone uses mirror rotating, cold backups at the same time can have only one lamp is lit, can't be dual lamp with light. Hot backup design: hot backup can simultaneously lit double lamps, no body movement ., dual lamp placed opposite sides with spectro synthetic diamond specular lighting, you can just point single lamp, also twin lamp used in rotation with bright or, at the same time to a lamp or two lights lit. <br> 4, dual-lamp .cold and hot backup comparison <br> 4.1 lamp life and bulb reliability <br> 4.1.1 cold backup lamp life is long, life is short of hot backup. <br> Since the wick of temperatures up to 1,100 degrees Celsius, the glowing .gas medium is a metal halide, theoretically, 24 hours a day, at least 30 minutes of rest time for metal halide to restore the precipitation, the cooling of two alternating lights, light has a chance to rest, it is possible to extend lamp life ., in theory, can be extended to two times as long. Hot backup because the dual lamp design with light, the resulting heat more unless double lamp is not a 24-hour use or just point single lamp, otherwise it will shorten lamp life and .no so-called backups. <br> 4.1.2 cold backup reliability high, hot backup reliability. <br> Cold backup only lit single LEDs, the heat generated is hot backup, in addition, in order to get a better set of light .efficiency (dual lamp coupling efficiency is usually less than 140 per cent) dual lamp location in close proximity to the design must be to hamper the operation of the heat flow, thermal design difficulties, the flow of hot air, it is difficult to grasp the .chaos and further influence the life of the bulb. <br> Preparation of light function in 4.2 double lamps with bright, hot backup design is no backup feature, because dual-lamp at the same time are at work. <br> 4.3 peak brightness .values for cold backup Jeffrey, hot backup low brightness of Jeffrey value high brightness. <br> In case of using the same 120W, cold backup only lit single LEDs, hot backup dual light with bright, hot backup of Jeffrey values brightness should be higher .than 40% of the cold backup, you may wonder, why not 2 times, Yes, because hot backup dual lamp while working together with the design must more or two optical path, reducing efficiency. <br> 4.4 single lamp brightness performance cold backup .single lamp brightness high, hot backup single lamp brightness difference between low, about 30 per cent. <br> Due to the hot backup dual lamp at the work of the design must be more than a single lamp design of optical path, affect the set .of light efficiency, thereby reducing the output brightness, even the best design and meticulous production, hot backup can only play a single lamp should have the brightness of 70 per cent, in other words, lighting efficiency only 70 per cent, in the long term ., in order to save costs, users only need single lamp operation, hot backup will lose lose brightness advantage. <br> 4.5 color adjustment and variation of cold backup adjustment easy variation, hot backup adjustment difficulties variation. <br> Hot backup dual lamp ., you must adjust the two lights of individual color temperature, but because each bulb's color temperature is different, the brightness over time is also different attenuation of speed, dual lights color temperature will make adjustments and time variation is very difficult to control, prolonged use .of especially difficult; cold backups at the same time only a single lamp is lit, adjust the single lamp, easy control. <br> 5, China electronic dual lamp cold backup-DLP unit features <br> China electronics DVW series DLP Projection unit .adopts the latest DMD chip DDR12 °, physical resolution up to 1024X768/1400 × 1050, contrast ratio is 1400: 1 / 2000: 1, and grayscale reach 12Bits, brightness up to 750/1800ANSI lumens (120W/250W typical values). < .br> The system adopts the cold-light structure (option), guarantees you no matter what the circumstances were able to safely use a large screen. In a dual-lamp backup optical engine internal components, set the PC every 2 seconds on the lamp .output optical detection, detection of the lamp, once detected working lamp failure, the system immediately lit spare bulb, at the same time to switch on the lamp into the spare bulb quickly switch to position, the system from standby the lamp lit to switch to .working time for 2 to 3 seconds, then you can use the large screen replace damaged bulbs, replacement does not affect the work of the optics. <br> The system has a memory setting is used to store system for operation, including: CPU work .situation, light bulb work status (timing, life tips, dual-lamp switch logs, etc), built-in stitch processor work status, etc., all recording data can be downloaded, stored in the control computer. <br> <br .> <br> <br>.