Mohammed Abdullah Hussein

The current increase of air pollution rates and its consequences of global warming, health problems and threats to human lives necessitate the continuous search for more efficient and cost effective gas monitoring devices. Devices that is easily available and implementable worldwide. In developing countries the cost and the availability of the equipment is one of the obstacles that contribute to not having an efficient monitoring system. Hence, modifying cheap and easily available devices to work as pollution monitoring system will be an asset in this direction. In this work I am presenting the design of a computer based pollution detection and measuring system using cheap CO (Carbon Monoxide) alarms used in homes. The outcome is a cost-effective computer based CO monitoring system that is easily available and could be easily modified to work as a network based CO nose. A C# based program is also designed to show and log the sensor readings in an easy to use and read Window.

Internet based process control usage has grown in the past years. Industry field demands were behind this, and it ranges from factory, office and home automation to tasks simplifications and cost reduction. In this book a hardware interface circuit and a software system used to control the temperature and level of a liquid tank is described. The advantage of the designed interface circuit is its simplicity and low cost. The same can be true for the software system in which we used C and Java programs to accomplish the communication. Both C and Java can be obtained freely and the development cost could be small. C language has been used to communicate with the designed interface circuit due to its strength in low level operations and communication with ports and hardware. In Java we have used mainly the Servlet for communication between the Client and the Server, which is a new approach and more reliable approach than the CGI based method that has common problems of speed and data persistence. This book is useful for people and researchers working in the field of control, remote access and computer based control.