公开(公告)号：US20170115114A1

公开(公告)日：2017-04-27

申请号：US15193664

申请日：2016-06-27

Applicant: Northeastern University

Inventor： Ralf BIRKEN ,  Ming-Liang WANG ,  Carey M. RAPPAPORT ,  Sara WADIA-FASCETTI ,  J. Gregory MCDANIEL

IPC: G01B11/25 ,  G01S19/14 ,  G01S15/89 ,  G01S13/88 ,  G01S13/89

CPC classification number: G01B11/2513 ,  G01S13/00 ,  G01S13/885 ,  G01S13/89 ,  G01S15/89 ,  G01S19/14 ,  G01V3/12

Abstract: A roaming sensor system collects data on the condition of roads and bridge decks and identifies and maps defects, including cracks, potholes, debonding, tracking, delamination, surface ice, surface water, and rebar corrosion. Data are collected by a vehicle or a fleet of vehicles driven at normal traffic speeds. The vehicle is outfitted with sensors that collect data using acoustic surface waves, ground penetrating radar, mm wave surface radar, and/or video images. The data are transmitted to a control center for analysis and distribution.

公开(公告)号：US20160272019A1

公开(公告)日：2016-09-22

申请号：US15070689

申请日：2016-03-15

Applicant: Northeastern University

Inventor： Ming WANG ,  Qi WANG ,  J. Gregory MCDANIEL ,  Nian X. SUN

IPC: B60C23/04 ,  G01D5/12 ,  G01N29/04

CPC classification number: B60C23/0474 ,  B60C23/041 ,  B60C23/0469 ,  B60C23/0486 ,  B60C23/0494 ,  B60R2021/01304 ,  B60R2021/01306 ,  B60R2021/01308 ,  B60W40/06 ,  G01D5/12 ,  G01N29/041

Abstract: An instantaneous/real-time wireless dynamic tire pressure sensor (DTPS) for characterizing pavement qualities and for detecting surface and subsurface pavement defects under normal driving conditions. Signal processing provides quantitative assessment of surface conditions. DTPS includes a vehicle tire valve stem-mounted pressure sensor and wheel hub-mounted signal conditioning, amplification, and transmitting circuitry. A signal processing computer within the vehicle is wirelessly coupled to the hub-mounted circuitry. Tire pressure changes caused by ground vibration excitation from the interaction between the tire and pavement at normal driving speeds are detected. When acoustic radiation from a surface wave is significantly stronger than acoustic noise, subsurface information can be extracted. An energy harvester based on strong magnetostatic coupling between a high permeability core solenoid, fixed proximate a vehicle wheel, and a bias magnet array, fixedly mounted in conjunction with a dust shield, can provide power the DIPS.

Abstract translation: 用于表征路面质量的瞬时/实时无线动态轮胎压力传感器（DTPS），并用于在正常驾驶条件下检测表面和地下路面缺陷。 信号处理提供了表面条件的定量评估。 DTPS包括车辆轮胎气门杆安装压力传感器和轮毂安装的信号调理，放大和发射电路。 车辆内的信号处理计算机无线地耦合到轮毂安装的电路。 检测由正常行驶速度下的轮胎与路面之间的相互作用引起的地面振动引起的轮胎压力变化。 当来自表面波的声辐射明显强于声学噪声时，可以提取地下信息。 基于与防尘罩结合固定地安装的高磁导率磁芯螺线管（靠近车轮固定）和偏置磁体阵列之间的强静磁耦合的能量收集器可以为DIPS提供动力。