This research paper describes the design of a room temperature and humidity controller using fuzzy logic. The proposed model consists of two fuzzy logic controllers to control temperature and humidity respectively. The first controller accepts two input valuesthe current temperature as detected by temperature sensor and its deviation from user set-temperature, and controls the speed of heat-fan...

An embedded silica optical microfiber knot resonator humidity sensor is presented. As silica has a poor response to environmental humidity changes, a surrounding layer of Nafion is used as a transducer. Spectral characterization and also a procedure to determine the coupling and total loss coefficients are presented. Sensitivity as high as (0.29±0.01)  nm/% relative humidity has been noticed. P...

In this paper we present a humidity sensor based on keratin which is present in human hair. Noting keratin’s ability to absorb humidity and undergo structural changes, we studied the change in its electrical properties as a function of humidity and temperature. The electrical properties change due to the change in water percentage in keratin as well as due to volumetric changes. The volumetric ...

In this study, a system for monitoring the structural health of bridge deck and predicting various possible damages to this section was designed based on measuring the temperature and humidity with the use of wireless sensor networks, and then it was implemented and investigated. A scaled model of a conventional medium sized bridge (length of 50 meters, height of 10 meters, and with 2 piers) wa...

This paper is about the wireless sensor network in environmental monitoring applications. A Wireless Sensor Network consists of many sensor nodes and a base station. The number and type of sensor nodes and the design protocols for any wireless sensor network is application specific. The sensor data in this application may be light intensity, temperature, pressure, humidity and their variations ...

The temperature, humidity, air composition and pH value are very important parameters in the granary that keep the grain safely store and good quality. Nowadays only temperature and moisture are used in most granary monitor and control system.Air composition, pH and insect pest are not monitored because classic industrial personal computer or microcomputer are not able to handle these real-time...

In hot weather, humidity content affects adversely the human body. It causes body fatigue and slowness in metabolism by excessive sweating and increased body temperature. If the relative humidity rate is 100% , there won't be sweating and the body temperature will rise. The rise in body temperature can lead people to death. Moreover, high amounts of CO2 in the air accelerate fatigue. Reach of i...