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Traffic safety has been one of the most primary social problems puzzling big cities over the world. It is widely believed that connected vehicle technology will tackle this problem. To achieve that, we installed RSE (Road Side Equipment) in urban road environment to communicate with OBE (On Board Equipment) through DSRC (dedicated short-range communication) to organize a DSRC network system. However,...
Traffic state estimation is important for active traffic planning, management, and control. By utilizing traffic status over time and space, a key theoretical analysis tool, i.e., shockwave theory, can be adopted as efficient tools to solve bottleneck or congestion problems. Two methods, who are fixed point observations and mobile probe vehicle observations, are typical methods and popular in traffic...
Though there are various input ways of touch screen such as tap, double tap, gestures and multi-touch operations, input is still limited and inconvenient. In this paper, we present a method to enhance touchscreen-input modality using integrated finger identification system, through which each touch point will be given a new property or meaning by being assigned to a certain finger. It is a highly...
A challenge in wireless sensing is to reduce power consumption during data transmission. Various methods aim at compressing amounts of data after sampling, which require additional computation energy or hardware. In this paper, pSense, a low complexity commercial off-the-shelf based (COTS-based) analog-to-information converter (AIC) platform is presented to minimize power consumption. A periodical...
Wide-Area protection uses the global information to detect faults and to achieve stability control, which is a hot research topic nowadays. However, wide-area protection system needs to use information from a number of substations. Therefore, communication's reliability requirement is high. To ensure reliability of the information transmitted between substations, this paper presents an encoding method...
With the increasingly complex power system, wide area protection, using global data obtained from different substations through communications, has been a hot research topic for some time. However, the overall transmission of large amounts of data will cause communication network congestion, which will lead to delay and loss of data. Therefore building an algorithm which can make use of a reduced...
The wireless magnetic sensor network is scalable and deployable for traffic surveillance. But active magnetic sensors of the wireless sensor node have high energy consumption which cannot be ignored. It is necessary to save energy of the wireless magnetic sensor node for vehicle detection. In this paper, based on compressed sensing (CS) by random down sampling matrix, an energy-efficient sub-Nyquist...
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