An Overview of Sensor Networks
Sensor networks are groups of sensors, each strategically placed in different locations, working collectively to monitor and capture data. These data points are then transmitted to a central location, where they are stored, analyzed, and made accessible for various applications. The significance of sensor networks lies in their ability to provide real-time insights and automated data collection, enabling a wide range of applications across various sectors.
One prominent application of sensor networks is in home security systems. Multiple sensors, such as magnetic open sensors on doors and windows, security cameras, and motion detectors, collaborate to detect potential intruders. The data gathered from these sensors is sent to a central system, allowing homeowners to monitor and analyze any security-related events effectively.
In the realm of environmental monitoring, sensor networks play a crucial role in assessing natural conditions like air pollution, water quality, soil conditions, and weather metrics. The traditional manual approach to environmental monitoring is time-consuming and labour-intensive. However, sensor networks provide a more automated and scalable solution, where distributed sensors collect data and send it to a central server for analysis. For instance, buoy-based sensor networks in the Great Lakes of the United States provide real-time data on wind speed, water temperature, air temperature, and wave height, which is publicly accessible through the Great Lakes Buoy Portal.
Municipal surveillance is another area that benefits from sensor networks. To enhance law enforcement capabilities, cities can deploy surveillance cameras equipped with advanced technologies, such as license plate readers and gunshot detectors. In Chicago, Illinois, a network of more than 30,000 security cameras and gunshot detectors assists police officers in tracking down criminals and preventing crime.
Furthermore, sensor networks contribute to earthquake detection. Seismic stations transmit data from earthquake sensor networks, which aids in detecting and verifying seismic activity.
Overall, sensor networks hold immense potential in revolutionizing various industries, from home security to environmental monitoring and public safety. However, the adoption of sensor networks in public areas also raises ethical concerns regarding privacy and data usage. Ensuring the ethical use of sensor data is crucial for striking the right balance between technological advancements and safeguarding individual rights and privacy.
https://www.csun.edu/~andrzej/COMP529-S05/papers/sensorNetworksSurvey.pdf
