Wiegand（韦根）协议是由摩托罗拉公司制定的一种通讯协议，它适用于涉及门禁控制系统的读卡器和卡 片的许多特性-Wiegand (Wiegand) protocol is a communications protocol developed by Motorola, which applies to many of the features of the card reader and card access control system