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- 저자 : Huanghui Zeng (검색결과 1 건)
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Feasibility Assessment of a Smartphone-Based Application to Estimate Road Roughness
Huanghui Zeng,Hyungjun Park,Brian L. Smith,Emily Parkany 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.8
Transportation agencies spend significant resources to collect pavement roughness data using profiler vans. A potential alternativeto collect functionally equivalent data at a significantly lower cost and higher level of temporal resolution is to use existingaccelerometers in smartphones as the “set” of sensors. In this research, a prototype smartphone application was developed toinvestigate the feasibility of such an approach. Acceleration data were collected using a prototype application running on Androidtablets on two routes in Virginia. The analysis results show that the proposed smartphone application can generate consistent data setsfrom different data collecting runs. In addition, the average of the collected data sets is found to be highly correlated with theInternational Roughness Index data collected by the Virginia Department of Transportation using profiler vans. Also, a sample sizeanalysis revealed that most pavement sections require fewer than 12 data collecting trips at a 50 Hz sampling rate while fewer than 16trips are required for a rate of 10 Hz. Finally, a preliminary benefit assessment for Virginia showed that the proposed smartphoneapplication approach allows for collection of comparable roughness data for more roadways, more frequently with significantly less cost.
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