安防产业的历史悠久,二战后的发展尤为迅速。在二十世纪七、八十年代Wiegand技术在市场上刚出现的时候,许多门禁控制备采用Wiegand的标准,但是经过几十年的应用,该项技术的局限性日益显现。在90年代出现了与之相似的125KHz的射频识别技术,但在开始时它还存在许多的问题,加之在该方面缺乏统一标准,所以导致了门禁设备技术应用参差不齐的现状。 Security industry has a long history, especially after the rapid development of World War II. While Wiegand technology was first introduced in the market in the 1970s and 1980s, many Wiegand standards were used for access control, but the limitations of the technology have become increasingly apparent after decades of use. In the 1990s there was a similar radio frequency identification technology of 125KHz, but at the beginning it still had many problems, and the lack of a uniform standard in this area led to the uneven application of access control equipment.