Remote SMS Instrumentation Supervision and Control Using LabVIEW

摘要

The hot emergence of remote monitoring and control systems in recent years is closely related to the outstanding advance in electronics and instrumentation techniques. As one of the earliest examples, the telemetry experiments using satellite-relay systems for remote hydrologic data collection (Glasgow et al., 2004) in the 70’s should be remembered. Since then, a fast and continual appearance of real time monitoring systems occurred, new devices and tools have kept coming up, and more and more powerful resources are available with decreasing prices. Hence, remote monitoring and control systems are gaining market-share in diversified areas such as industry, security, education and even in health-care applications. In every distinct area it is possible to evince different advantages and applications when using remote systems. To exemplify the industrial field, a remote data acquisition may be used to monitor machine health and energy consumption in environments where it is difficult to access or to use wired data acquisition systems (Khan et al., 2004). As another example, a remote fault diagnostic system to check machines status including data, image, and video trough the Internet and mobile terminals by wireless application protocol (WAP) (Wang et al., 2007) was implemented. In the security area, a robot can inspect home environment giving general information and alarms about dangerous situations using wireless network (Zhang et al., 2007). In addition, real-time remote health monitoring systems can acquire and process data to evaluate long bridge structure reliability (Jianting et al., 2006). Regarding the educational field, there is a web-based remote control laboratory that employs a greenhouse scale model for teaching greenhouse climate control techniques using different hardware and software platforms (Guzman et al., 2005), and also a virtual laboratory that permits remote access via Transmission Control Protocol/Internet Protocol (TCP/IP), enabling control and supervision through the Internet (Garbus et al., 2006). In addition, the results of an evaluation of remote monitoring in home health care show a reduction in nursing visit and hospitalization rates in the remote monitoring patient group (Rosati, 2009). The example list can be much longer. The technological advances allow development of systems with more and better resources and higher transmission rates, consequently increasing its complexity and budget. However, in various applications we just need to