Meo Vincent C. Caya

Warning System for Firefighters Using E-Textile

This paper presents a research focused on an e-textile based warning system for firefighters which is intended to bring more safety to firefighters on-the-job. The system is designed so that it is integrated into an undergarment shirt worn underneath a firefighters protective jacket/suit. It is able to monitor heart rate, detect a firefighters position relative to his posture, detect CO gas concentrations in the environment and measure ambient temperature. The warning system, as a whole, consists of the sensors and a microcontroller integrated into the undergarment through e-textile technology, and a wireless monitoring device. Measured data are wirelessly transmitted and received by the monitoring device capable of data visualization and are intended to be used by an operation chief to monitor a firefighter. When monitored data exceed a certain threshold value the firefighter will be notified by means of a light and sound alarm. The system performed well when tested against specific digital sensors and withstood moisture exposure tests. Wireless communication was consistently established to the monitoring device.

Microcontroller-based fertilizer dispenser for rice crop

With this study, the researchers explored the potentials of innovating the distribution of fertilizers, improving the distribution of fertilizers in rice crops and made it more efficient. Statistical tests were conducted to determine significant difference in yield in a rice crop season. Particularly with the help of previous reviews of related literature on color sensor, color analysis, leaf color chart, a microcontroller-based fertilizer dispenser for rice crops was developed and ended up with a significant difference in rice yield at a 5% level of significance.

Extension of a 3-cm range of transmission and reception of a visible light communication system through varying modulation technique

This paper presents the use of visible light as a means of data communication, utilizing a Light Emitting Diode (LED) for data transmission, specifically the super bright LED and utilizing a Laser diode (LD) module which has a more focused beam and further range. The study implemented a wireless visible light communication (VLC) system that can transmit and receive data with a range of more than 3 cm; through varying modulation techniques, namely Phase Shift Keying (PSK), Frequency Shift Keying (FSK) and, Amplitude Shift Keying (ASK). The process includes using two Arduino modules, one for signal transmission and another for signal reception. The transmitter module is connected to a computer with the Arduino software where data will be inputted for transmission. The receiver consists of a photodiode which sends the intelligence to the Arduino and projects data to the screen. In all of the said techniques, it is observed that the presence of Bit Error Rate (BER) increased as the distance between the transmitter and receiver becomes greater. The farthest distance that PSK can achieve for LED is 9.8 cm and 22.2 cm for laser. In FSK the limit is up until 9.4 cm for LED and 21.4 cm for laser. While in ASK, the BER is unacceptable for all the distances in LED but in using the laser, it can reach as long as 19.4 cm. In general, the researchers were able to extend the transmission distance far greater than 3 cm. minimum distance between the devices.

Effect of widespread variation of distributed generation (DG) on the line performance of a radial distribution network

Nowadays, there is a big drive to reduce environmental pollution and energy security concern which in turn led to an increase in the use of renewable energy. Due to the penetration of these renewable energy to the power system, it experience drastic changes that affects its performance. This paper presents the impact of the dispersion levels of distributed generation (DG) on the line performance of the IEEE 34 bus radial distribution network. The study investigates the issues of voltage stability improvement and power loss reduction of the radial distribution network with DG.

Water Penetrating Sensor for Feature Extraction of Benthic Habitat using Remotely Sensed Information in Shallow Water

In this paper, data analysis was performed on the spatial features of the benthic habitat using the Lowrance Elite CHIRP 7 SoNAR system embedded with an 80 and 455 KHz transducer in shallow water. Basically, the system addresses the need for information from the benthic habitat in order by means of cheaper solution. The system used was relatively cheaper and way smaller in scale without leaving behind the functionality of the large scale systems. Data was gathered from benthic habitat through the transceiver and analyzed using image processing techniques loaded in Raspberry Pi for spatial features extraction. It was found that the distribution of fishes and vegetation underwater has a direct correlation to the shape of the terrain. Three different terrains were analyzed, minimum deviation slope terrain, parabolic slope terrain and varying slope terrain, wherein the last mentioned terrain produced the highest distribution for both fishes and vegetation.