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发明授权
CN100595783C 标签防冲突无线射频识别系统和标签识别方法 失效 - 权利终止 转让

标签防冲突无线射频识别系统和标签识别方法
摘要：
本发明涉及标签防冲突RFID系统和标签识别方法。该标签识别方法包括：第一步骤，初始化队列(Q)字段，并且在队列字段中存储候选队列(CQ)字段的前缀；第二步骤，将包括存储在队列字段中的前缀的查询传送至RFID标签，并且从队列字段中删除所传送的前缀；第三步骤，如果两个或更多个标签响应先前传送的前缀从而不能识别标签，则将这样的前缀插入到队列字段中，在该前缀中，将0和1插入到先前传送的查询的前缀的后部，并且如果没有响应或只有一个标签响应于先前传送的前缀，则将先前传送的查询的前缀插入到候选队列字段中，并且删除存储在候选队列中的多余的前缀；以及第四步骤，确定队列字段中是否还有前缀，并且如果还有前缀，则返回至第二步骤。
摘要（英）：

The present invention relates to a tag anti-collision Radio Frequency Identification (RFID) system and a method for tag identification. The method for tag identification consists of a first step of initializing a queue (Q) field and storing a prefix of a candidate queue (CQ) field in the queue field; a second step of transmitting a query including the prefix stored in the queue field to the RFID tags, and deleting the transmitted prefix from the queue field; a third step of inserting a prefix, in which prefixes 0 and 1 are inserted into a rear portion of a prefix of a previously transmitted query, into the queue field if two or more tags respond to the previously transmitted prefix and, therefore, the tags cannot be identified, and inserting the prefix of the previously transmitted query into the candidate queue field and deleting an unnecessary prefix stored in the candidate queue if there is no response or only one tag responds with respect to the previously transmitted prefix; and afourth step of determining whether a prefix stored in the queue field exists, and returning to the second step if there is a prefix stored in the queue field.

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