Informatics Publishing Limited

M. M. Taqui Khan ¹, R. P. Pant ¹, K. Venkatasubramanian ¹, R. V. Mehta ²

Affiliations
1 Central Salt & Marine Chemicals Research Institute, Bhavnagar 364002, IN
2 Department of Physics, Bhavnagar University, Bhavnagar 364002, IN

Abstract

The use of Eyring's equation to explain the rate of evaporation of a water based ferrofluid at various temperatures under the influence of magnetic fields of different strengths has yielded information on the changes of entropy and enthalpy of the system. The observed data has been interpreted through the use of a model and a proposed mechanism.

Keywords

Rate of Evaporation, ferrofluid, Applied Magnetic Field.

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Riya Roy ¹, K. Venkatasubramanian ¹

Affiliations
1 School of Electronics Engineering, VIT University, Chennai - 600127, Tamil Nadu, IN

Abstract

Background/Objectives: This paper deals about the designing and development of a driver alert system based on EKG signals to detect the driver drowsiness and thus to reduce accident rate. Methods: Conductive sensor attached to the hand which continuously monitor driver’s heart rate and disseminate warning message through mail and SMS to the owner or respective authority. The structure system contains four parts including signal acquisition unit, signal conditioning unit processing unit and Message delivery system. Findings: The signal acquired from the conductive plate contains noises. Removal of the noise signals from the ECG signals is important and critical. One of the novel ideas in the work is the development of conductive sensor using conductive plates and integrated signal conditioning module AD8232 to measure the heart rate. Use of an integrated signal conditioning module makes the system small and cost effective. This system uses a Tiva C series microcontroller for processing unit and Raspberry-pi as message delivery system. Conclusion/ Improvements: Non intrusive nature of this system helps to detect driver’s heart rate without making inconvenience to him. Mail and message sending features of the system helps the respective authority to take immediate actions. Improvement can be done to the system by adding the GPS functionality for tracking the location of vehicle.

Keywords

ADAS, Drowsiness, ECG, EKG, Heart Rate (HR)

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S. Rohini ¹, K. Venkatasubramanian ¹

Affiliations
1 School of Electronics, VIT University, Chennai - 600127, Tamil Nadu, IN

Abstract

Background/Objectives: This paper speaks about the design of a wireless sensor module that senses the temperature and humidity of a residential building. In most of the cases the temperature in a home is controlled by a single thermostat placed at a central location. Methods/Statistical Analysis: Few rooms might be hotter or cooler than the other. Hence, zoning systems are used to provide independent comfort for each zone. Each zone can have a sensor that detects the temperature and humidity of the zone. But, the current thermostats have a sensor onboard which detect temperature and humidity. Findings: This sensor output can be affected by the heat produced by other devices on the thermostat. The solution of this problem is a wireless sensor which detects the exact temperature of the zone. Based on these values the thermostat runs a predefined algorithm and maintains the required environment in each zone. On comparison with different wireless technologies like Zigbee, Wi-Fi, Bluetooth. Z-wave suits more for the above applications whose frequency is 900 MHz which is different from the crowded 2.4 GHz frequency band and Z-wave also has a higher range and battery life. This system has a wireless sensor module which talks to the thermostat using Z-wave wireless communication protocol. This system uses ARM based microcontroller for wireless sensor unit. The thermostat has a high end ARM based microprocessor and a display unit which shows the acquired temperature and humidity. Conclusion/Improvements: his design shows a wireless sensor module that is implemented for a single zone system. Improvement can be done on the design to develop a low power battery operated sensor module that can be implemented for a multi zone system.

Keywords

Control System, Heating, Thermostat, Ventilating and Air Conditioning (HVAC), Wireless Communication Protocol, Zoning

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