Abstract
Realization of open online control of diverse in-situ sensors is a challenge. This paper proposes a Cyber-Physical Geographical Information Service-enabled method for control of diverse in-situ sensors, based on location-based instant sensing of sensors, which provides closed-loop feedbacks. The method adopts the concepts and technologies of newly developed cyber-physical systems (CPSs) to combine control with sensing, communication, and computation, takes advantage of geographical information service such as services provided by the Tianditu which is a basic geographic information service platform in China and Sensor Web services to establish geo-sensor applications, and builds well-designed human-machine interfaces (HMIs) to support online and open interactions between human beings and physical sensors through cyberspace. The method was tested with experiments carried out in two geographically distributed scientific experimental fields, Baoxie Sensor Web Experimental Field in Wuhan city and Yemaomian Landslide Monitoring Station in Three Gorges, with three typical sensors chosen as representatives using the prototype system Geospatial Sensor Web Common Service Platform. The results show that the proposed method is an open, online, closed-loop means of control.
Highlights
Rajkunmar et al define cyber-physical systems (CPSs) as physical and engineered systems the operations of which are monitored, coordinated, controlled and integrated using a computing and communication core
As was stated at the beginning of this section, the experiment comprised two phases: (1) location-based instant sensing; (2) closed-loop control based on sensed data
A data request is sent to the Microprogrammed Control Unit (MCU) to which the barometer is attached by the middleware program using TCP/IP protocol through general packet radio service (GPRS) communication
Summary
Rajkunmar et al define cyber-physical systems (CPSs) as physical and engineered systems the operations of which are monitored, coordinated, controlled and integrated using a computing and communication core. They assert that any systems that bridge the cyber-world of computing and communication with the physical world can be referred to as CPSs. They assert that any systems that bridge the cyber-world of computing and communication with the physical world can be referred to as CPSs They believe that just as the Internet transformed how human beings interact and communicate with one another, CPSs will transform how human beings interact with and control the physical world around us [1,2,3].
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