RFID技术在自动分拣集中识别中的应用研究
发布时间:2018-07-23 21:00
【摘要】:分拣技术作为物流中的重要的环节,经历了几次技术的更迭,从最初的人工分拣、机械分拣,到现在的自动分拣技术。自动分拣过程中的信息指令输入方式是一个影响分拣系统效率的重要因素。目前在物流中心的自动分拣系统中,条码技术和RFID技术是最常见的信息指令输入技术。RFID技术因具有非接触识别、移动识别、快速读写的特点,在自动分拣中应用比条码技术具有更大的优势。在分拣过程中,分拣主线集中识别比供件台单一识别需要的阅读器数量更少,分拣主线集中识别有利于降低物流成本。通过调研,在自动分拣集中识别中,由于RFID系统的阅读区范围过大,会出现多个电子标签同时被读取,而导致分拣出错。因此在自动分拣集中识别中,需要保证阅读器一次只能读取一个标签。本文通过研究阅读器天线的工作原理,分析出影响电子标签连续识读的因素。包括:天线方向、天线类型、阅读器发射功率。并搭建RFID的基础测试实验环境,通过测试研究发现天线阅读区边缘识读率不稳定是影响电子标签连续识读成功率的重要因素。本文通过研究屏蔽原理以及屏蔽材料,提出利用屏蔽箱解决天线阅读区边缘识读率不稳定现象。设计出了一种简单的屏蔽箱,并对其效果进行测试。通过调整阅读器的发射功率、标签间距和标签的移动速度,找到了在合适的条件下,RFID系统可以达到较高的连续识读成功率。基于RFID系统在自动分拣系统中的特殊应用场景,分析比较了 RFID系统的特点,为RFID在自动分拣系统中的应用提供了参考。并针对RFID系统在不同的分拣机中的应用做了简单的分析。
[Abstract]:As an important link in logistics, sorting technology has undergone several changes of technology, from the initial artificial sorting, mechanical sorting, and automatic sorting technology. The input mode of information instruction in the process of automatic sorting is an important factor affecting the efficiency of the sorting system. Technology and RFID technology are the most common information instruction input technology,.RFID technology has the characteristics of non contact recognition, mobile recognition and fast reading and writing. In automatic sorting, it has a greater advantage than bar code technology. In the sorting process, the sorting line concentrating recognition is less than the number of readers and the sorting line is needed. Centralized recognition is beneficial to reduce logistics cost. Through research, in automatic sorting centralized recognition, because the range of reading area of RFID system is too large, multiple electronic tags can be read at the same time, resulting in sorting error. Therefore, in automatic sorting recognition, it is necessary to ensure that the reader can only read one tag at one time. The working principle of the reader antenna analyses the factors that affect the continuous reading of the electronic tags, including antenna direction, antenna type, and transmitter power. The basic test environment of RFID is built. Through the test, it is found that the instability of the edge reading rate of the antenna reading area is an important factor in the success rate of the continuous reading of the electronic tag. By studying the shielding principle and shielding material, this paper proposes to use the shielding box to solve the instability of the edge reading rate of the antenna reading area. A simple shielding box is designed and its effect is tested. By adjusting the transmitting power of the reader, the spacing of the label and the moving speed of the label, the RFID system is found under the appropriate conditions. Based on the special application scene of the RFID system in the automatic sorting system, the characteristics of the RFID system are analyzed and compared. It provides a reference for the application of RFID in the automatic sorting system, and makes a simple analysis of the application of the RFID system in the different sorting machines.
【学位授予单位】:天津科技大学
【学位级别】:硕士
【学位授予年份】:2016
【分类号】:TP391.44
本文编号:2140623
[Abstract]:As an important link in logistics, sorting technology has undergone several changes of technology, from the initial artificial sorting, mechanical sorting, and automatic sorting technology. The input mode of information instruction in the process of automatic sorting is an important factor affecting the efficiency of the sorting system. Technology and RFID technology are the most common information instruction input technology,.RFID technology has the characteristics of non contact recognition, mobile recognition and fast reading and writing. In automatic sorting, it has a greater advantage than bar code technology. In the sorting process, the sorting line concentrating recognition is less than the number of readers and the sorting line is needed. Centralized recognition is beneficial to reduce logistics cost. Through research, in automatic sorting centralized recognition, because the range of reading area of RFID system is too large, multiple electronic tags can be read at the same time, resulting in sorting error. Therefore, in automatic sorting recognition, it is necessary to ensure that the reader can only read one tag at one time. The working principle of the reader antenna analyses the factors that affect the continuous reading of the electronic tags, including antenna direction, antenna type, and transmitter power. The basic test environment of RFID is built. Through the test, it is found that the instability of the edge reading rate of the antenna reading area is an important factor in the success rate of the continuous reading of the electronic tag. By studying the shielding principle and shielding material, this paper proposes to use the shielding box to solve the instability of the edge reading rate of the antenna reading area. A simple shielding box is designed and its effect is tested. By adjusting the transmitting power of the reader, the spacing of the label and the moving speed of the label, the RFID system is found under the appropriate conditions. Based on the special application scene of the RFID system in the automatic sorting system, the characteristics of the RFID system are analyzed and compared. It provides a reference for the application of RFID in the automatic sorting system, and makes a simple analysis of the application of the RFID system in the different sorting machines.
【学位授予单位】:天津科技大学
【学位级别】:硕士
【学位授予年份】:2016
【分类号】:TP391.44
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1 程飞;RFID技术在自动分拣集中识别中的应用研究[D];天津科技大学;2016年
,本文编号:2140623
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