A Wireless Sensor Network (WSN) consists of distributed an autonomous devices that monitors both physical and environmental conditions. Sensor Networks are used for weather prediction and measuring temperature, sound, wave, vibration, pressure etc. Sensor Networks suffer from various security attacks like (i) sink hole attack, (ii) black hole attack, (iii) wormhole attack and (iv) selective for...

Sound source localization has numerous applications such as detection and localization of mechanical or structural failures in vehicles and buildings or bridges, security systems, collision avoidance, and robotic vision. The paper presents the design of an anechoic chamber, sensor arrays and an analysis of how the data acquired from the sensors could be used for sound source localization and ob...

A biomimetic acoustic sensor was fabricated with single crystal PMN-PT piezoelectric cantilever array that can mimic functional properties of mammalian cochlea. Basilar membrane of mammalian cochlea can separate frequency components of input sound source and Ion channel phenomenon of hair cells on basilar membrane can generate action potentials for stimulating a nerve site. The piezoelectric ca...

In active structural acoustic control the goal is to reduce the sound radiation of a structure by means of changing the vibrational behaviour of that structure. The performance of such an active control system is to a large extent determined by the locations of the actuators and sensors. In this work an approach is presented for the optimization of the actuator and sensor locations. The approac...

We present an energy-efficient wireless sensor network (WSN) architecture tailored for illegal deforestation detection. Illegal deforestation is a world-wide problem which may be prevented through improved monitoring of forested areas utilizing sensor networks equipped with chain-saw detection. Additional to detection, we identify sound source localization and sensor node localization as essent...

INTRODUCTION Noncontact transfer devices are demanded when silicon wafers or glass plates are carried in clean environment. Because contact of such products with a conveyer belt damaged their surface, non-contact transfer devices are needed for the use in clean environment. Many transfer devices using ultrasonic, electromagnetic or electrostatic levitation have been proposed. The authors also h...

This paper investigates a novel position sensor based force reflection framework for multi degrees-of-freedom bilateral teleoperation systems in unstructured environments. The conventional position sensor based force reflection method, known as position error feedback, may generate grossly inaccurate force reflection directions during collisions involving the slave manipulator links. The propos...