Web-Based Surface Level Measuring System Employing Ultrasonic Sensors and GSM/GPRS-Based Communication

Abstract

Water surface level should get special attention as water can cause disasters such as flood when its surface exceeds a certain level. A real time early warning system to monitor water surface level is necessary for avoiding severe effects of flood to human life. A web-based water level measuring system using an ultrasonic sensor can be an alternative choice for developing the early warning system. It is known that the system has advantages in the installation and maintenance compared to other systems. This paper discusses the design of a water level measuring system integrated with an internet web server. Ultrasonic sensors are used to measure the water surface level. A GSM / GPRS-based communication system is applied for sending measured water levels to a web server. The results indicate that the measurement data are in accordance with the water levels manually obtained. The results also show that the system works real time.

Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom

“…The four Mic+25/IU/TC sensors (P2-P5) were used downstream in order to be able to measure fast water level changes, due to their lower measurement range (3-25 cm) and quicker response time (32 ms). More information about the UDS can be found in previous studies [63].…”

A simple solar simulator with highly stable controlled irradiance for solar panel characterization

“…[2][3][4][5] Another group of solar simulators with highflux concentrators are operated in producing high temperatures for research in materials processing, thermochemical reactions, solar fuels production, and simulated solar thermal power generation. [6][7][8][9][10] Solar cells along with batteries and power managements were used to supply electrical power for various monitoring systems, such as natural disaster monitoring systems, [11][12][13][14][15] structure health monitoring, 16 aquaculture monitoring, 17 and underground mining area monitoring, 18 which is placed in remote or inaccessible areas. Tests of solar cells along with their batteries and power managements using a non-concentrating uniformly distributed solar simulator are therefore very important to make sure the continuous power supply to the monitoring systems.…”