Microcontroller-based electromagnectic interference (EMI)-shielded baby monitoring system using GSM technology

The microcontroller-based EMI-shielded baby monitoring system using GSM technology was designed to transmit a baby’s vital signs through a wireless medium using a GSM module connected to the main device unit. The device was designed in such a way that electromagnetic interference (EMI) is reduced to a level permissible by the CSIPR standards for medical device and household application by undergoing testing. The device allows remote monitoring of the status of the baby and is safe from EMI susceptibility. The structure of the system is basically having data acquisition modules for the sensors and a GSM module which are connected to an intelligence module with PIC16F877A. The sensor modules consists of a pulse oximeter which measures the oxygen saturation level and pulse rate of the infant, a temperature sensor for temperature measurements of the infant and a sound sensor for detecting sounds produced by the infant. The temperature, oxygen saturation and pulse rate parameters will be displayed and can be viewed on the LCD of the device. If the sound sensor detects noise, it will play a soothing sound on its speaker for the infant. If one of the parameters measured will deviate from the normal ranges of an infant, the GSM module will send a warning notification SMS to the destination cellular phone. Assembly language and AT codes were used for the PIC16F to analyze data and GSM module to send messages to destination numbers

Fully automated fabric cleaning machine using piezoelectric transducer

To be sustainable is just one of the many things the world is in constant search at the moment. There is a need to look for alternatives that will be kinder to mother nature. The group proposed the development of study of Prototyping of an ultrasonic test machine for washing fabrics by Basa et. al. for further explore whether the technology can be successfully to be used by all and moreover, discover limitations it can impose. Basically, the system is a fabric-cleaning machine that only requires water, eliminating the use of detergent. Through the 40 KHz piezoelectric transducers, it is made possible. The machine was able to clean a number of stains but there are also stains that were just lightened. The group characterized the effect of the ultrasonic on cotton, polyester, denim, satin and jersey. These fabrics were not just samples nor patches but clothes that can be worn. They were stained with soy sauce, soil, ink, rust and grease. To have the machine user-friendly, a control panel was developed. It gave the user the freedom to set the time, determine the load and if it needs double wash. There are solenoid valves installed to have filling and draining automated and as well as a water level indicator to determine whether the tank is filled with desired level, empty or about to overflow. Also, an agitator was implemented to help cleaning the clothes. In conclusion, the group was able to develop successfully a fabric-cleaning machine using piezoelectric transducers. Characterization on fabric was also done. The implementation of automation through the control panel was also a success