Sensors PDF

Obstacle detection robot with ultrasonic sensors pdf

Achieving robust message authentication in sensor networks: a public-key based approach

Given the extremely limited hardware resources on sensor nodes and the inclement deploying environment, the adversary Denial-of-Service (DoS) attack becomes a serious security threat toward wireless sensor networks. Without adequate defense mechanism, the adversary can simply inundate the network by flooding the bogus data packets, and paralyze the partial or whole sensor network by depleting n...

Simplify Isolated Temperature Sensing With Single Wire Sensors - AN1075

Many temperature sensing applications require galvanic isolation of the sensor. Fortunately, several low-cost temperature-sensing integrated circuits (ICs) are easy to isolate. This application note shows two approaches to isolating temperature sensors. Sensors, such as temperature sensors, require galvanic isolation when they are mounted in "mechanically inconvenient" locations such as electri...

Distributed Bayesian Detection Under Unknown Observation Statistics

In this paper, distributed Bayesian detection problems with unknown prior probabilities of hypotheses are considered. The sensors obtain observations which are conditionally dependent across sensors and their probability density functions (pdf) are not exactly known. The observations are quantized and are sent to the fusion center. The fusion center fuses the current quantized observations and ...

MEMS Pressure Sensors- An Overview of Challenges in Technology and Packaging

Pressure sensors are required in all walks of life, irrespective of civilian, defense, aerospace, biomedical, automobile, Oceanography or domestic applications. Naturally, rapid progress has been made in micromachined pressure sensors and the microsystems using these sensors. Starting with metal strain gauges and moving forward with silicon based pressure sensors with flat diaphragms, the searc...