一种超耐候自发光标识牌的应用

A Super Weatherproof Self-luminous Signboard

超耐候自发光标识牌由热转印标识图案层、耐候发光层、亮光型耐候层、胶黏剂层和离型纸层五层材料复合组成,表观黄绿色。标识牌的发光本质是电子跃迁吸光和放光。紫外老化2300h后,标识牌表面无损坏现象,仍具有发光特性,仅色值出现消退变化。普通照明灯照射10min,黑暗环境中标识牌的字迹图案清晰可见,已在电力系统中得到现实的推广应用。简述了超耐候自发光标识牌的结构组成、发光原理,对自发光标识牌的耐紫外老化性能和发光性能进行了测试分析。同时,介绍了自发光标识牌在电力系统中的现实应用实例。

In the field of decoders, a low-density parity-check LDPC decoding method is studied. It is found that the storage capacity is only about half of the sum-product algorithm. When the BER performance is the same, the number of iterations is about half of the sum-product algorithm, and the tradeoff between area and processing speed is achieved. According to the structure characteristics of DTMB LDPC codes, considering both performance and hardware implementation, a simplified decoding method and a calculation method of LLR operation are proposed in this paper, which are equivalent to the original algorithm in performance, and the hardware implementation resources can reduce more storage capacity than the original algorithm.