瀝青混凝土鋪面材料對RFID探測下地人手孔之影響

Effects of the Materials of Asphalt Concrete Pavement on Underground Manhole’s Survey Using RFID

林恒旻(Heng-Min Lin)

指導教授 ： 楊樹榮

國立屏東科技大學/工學院/土木工程系所/碩士(2014年)

https://doi.org/10.6346/NPUST.2014.00300

摘要

臺灣道路人手孔高低不平的現象，長期困擾用路人的生命安全與舒適性。因此，各政府單位積極推廣路平專案，將人手孔下地，藉此提升道路平整度。路平專案在回填瀝青混凝土埋設人手孔前，工程單位會將每個人手孔上埋設RFID電子標籤(RFID Tag)，藉由RFID系統快速精確地探測人手孔位置。本研究於實驗室利用型號H35B讀取器與超高頻(Ultra High-Frequency,UHF)RFID電子標籤(頻率860~960MHz)，進行模擬RFID應用於人手孔下地情況，探討瀝青混凝土級配、含油量、空隙率、瀝青混凝土鋪設厚度及RFID讀取器量測高度對於RFID訊號讀取上之影響。另一方面，也探討路基土壤與底層級配、含水量、夯實度、鋪設厚度及RFID讀取器量測高度對於RFID訊號讀取上之影響。研究結果顯示瀝青混凝土含油量及空隙率會造成訊號讀取上之影響，隨著含油量增加與空隙率降低，讀取訊號產生遞減現象。此外，隨瀝青混凝土厚度及量測高度增加而讀取效果遞減。另一研究結果顯示路基土壤含水量及夯實度亦會造成訊號讀取之影響，隨著含水量增加與夯實度提高，讀取訊號產生遞減現象，甚至無法正常讀取訊號，而鋪設厚度及量測高度隨著增加而讀取效果遞減，其中以路基土壤含水量影響RFID探測訊號最為明顯。

關鍵字

人手孔 ； 路平專案 ； RFID

並列摘要

In Taiwan, the uneven road surface due to manhole cover has plagued road user’s safety and comfort. Hence, relevant government agencies have conducted smooth roads project to level down manholes into road structures so that the roads can have a flat surface. Before backfilling asphalt concrete to bury manhole covers, engineers put RFID tags on each manhole cover to quickly and accurately detect manhole location using RFID systems. In this study, a model H35B RFID reader and UHF (Ultra High-Frequency, UHF) RFID tags (frequency 860~960MHz), were used in the laboratory for the simulation of RFID in the fields of manhole case. Analyzed factors include graded types of asphalt concrete, oil content, porosity, thickness and laying asphalt concrete and measured height of the RFID reader for reading the impact of RFID signals. On the other hand, we also explored the underlying sub-grade soil grading, measured the height of the impact of moisture on RFID read signals, the degree of compaction, laying thickness and the RFID reader. The results showed that oil content and porosity have influence on the read of the RFID signal. With the increase in oil content and decrease in porosity, read signals diminish. In addition, with increasing in asphalt concrete thickness and height measurements, there is an increase in the effect of diminishing read. Several analyses showed that soil moisture and degree of compaction affect the signal reading. As water content and the degree of compaction increase, read signal generation diminishes and cannot even be read properly. With increasing in the laying thickness and height measurements, the effect on RFID tags read increases. Among sub-grade, soil moisture probe signals had the most obvious impact on RFID.

並列關鍵字

manhole cover ； smooth roads project ； RFID

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