發(fā)布時(shí)間：2019-04-19 09:15

【摘要】：溫度控制是混凝土固化期間的重要措施。針對(duì)現(xiàn)有混凝土溫度監(jiān)測(cè)方法的缺點(diǎn),設(shè)計(jì)一種用于混凝土溫度監(jiān)測(cè)的無(wú)源射頻識(shí)別(RFID)傳感器標(biāo)簽。該RFID傳感器標(biāo)簽是基于超高頻(UHF)的EPC-2通信協(xié)議,且工作于無(wú)源模式下。由于混凝土是有損多相復(fù)合材料,文中具體分析電磁波在混凝土中的總損耗,確定標(biāo)簽可正常工作的基本條件。后期試驗(yàn)對(duì)所設(shè)計(jì)的溫度傳感器標(biāo)簽進(jìn)行了溫度測(cè)試、校準(zhǔn)以及通信性能測(cè)試。試驗(yàn)結(jié)果表明,基于文中設(shè)計(jì)的無(wú)源RFID傳感器標(biāo)簽所測(cè)試的溫度與傳統(tǒng)的熱電偶測(cè)試結(jié)果基本一致,最大溫差不超過(guò)0.5℃。相比于現(xiàn)有的混凝土溫度監(jiān)測(cè)方法,具有便利性強(qiáng)、成本低、壽命長(zhǎng)等顯著優(yōu)點(diǎn)。
[Abstract]:Temperature control is an important measure during the curing period of concrete. In view of the shortcomings of existing methods of concrete temperature monitoring, a passive RFID (RFID) sensor tag for concrete temperature monitoring is designed. The RFID sensor tag is a EPC-2 communication protocol based on UHF (UHF) and works in passive mode. Because concrete is a lossy multiphase composite material, the total loss of electromagnetic wave in concrete is analyzed in detail, and the basic conditions under which the label can work normally are determined. The temperature test, calibration and communication performance test of the designed temperature sensor label were carried out in the later test. The experimental results show that the temperature measured by the passive RFID sensor tag designed in this paper is basically consistent with the traditional thermocouple test results, and the maximum temperature difference is less than 0.5 鈩，

本文編號(hào)：2460814