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This paper presents a new high performance 1.2 V - 0.18 µm CMOS voltage-to-frequency converter (VFC) that can be used either in single or differential mode to digitize sensor read-out signals in wireless sensor network applications. The proposed VFC works properly over the entire input range with output frequencies ranging between 0.0 and 0.9 MHz, which allows the sensor node microcontroller optimally...
A smart sensing system, which would help in detecting human emotions based on information from physiological parameters obtained from sensors, has been designed and developed. Sensors continuously monitor the heart rate, skin conductance and skin temperature. The amplified and filtered signals from the sensors are then processed by a microcontroller and transmitted wirelessly using ZigBee technology...
In the field of communication between the variant sensor and actuator devices in measurement and instrumentation systems, currently a change of key technologies is underway: The traditional field bus concepts are replaced by state-of-the-art communication systems. Many of these new designs are based on Industrial Ethernet. This paper presents key requirements for an Ethernet-based communication network...
The in situ and continuous water supplies monitoring for human use it is an important topic around the world for caring consumer's health because the water could be contaminated from natural environment. To review this, in this paper are shown the results of a study at “University: Instituto Tecnológico de Chihuahua” in which the quality of thirteen points of waters sources, used for around 5000 users,...
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