![]() ![]() This protocol is widely used to connecting smart sensors and actuators and microsystems in embedded real-time systems in different application domains, e.g., industrial, automotive, domotic, etc., although this protocol can be easily replaced by any other because of the inherent characteristics of the FPGA-based technology.Ī FPGA Embedded Web Server for Remote Monitoring and Control of Smart Sensors Networks Thus, the implemented master node has two interfaces, the webserver that acts as an Internet interface and the other to control the network. In order to develop a totally functional system, the FPGA also includes an implementation of the time-triggered protocol (TTP/A). The FPGA is configured to act like the master node of a network, and also to control and monitor a network of smart sensors or instruments. The processor uses the μCLinux operating system to support a Boa web server of dynamic pages using Common Gateway Interface (CGI). This article describes the implementation of a web server using an embedded Altera NIOS II IP core, a general purpose and configurable RISC processor which is embedded in a Cyclone FPGA. Magdaleno, Eduardo RodrÃguez, Manuel Pérez, Fernando Hernández, David GarcÃa, Enrique This approach led to the development of the Embedded Web Technology (EWT) program at Lewis, which has the potential to significantly reduce software development costs for both flight and ground software.Ī FPGA embedded web server for remote monitoring and control of smart sensors networks. An innovative solution to this requirement, developed at Lewis, is to use Internet technology, where the general problem of platform independence has already been partially solved, and to leverage this expanding technology as new products are developed. Developing a specific GUI for all these users would be cost prohibitive. However, the interface for the International Space Station (ISS) Fluids and Combustion Facility will have to enable scientists throughout the world and astronauts onboard the ISS, using different computer platforms, to interact with their experiments in the Fluids and Combustion Facility. This procedure works well for a single-user environment. ![]() For each experiment, a specific graphical user interface (GUI) has been developed. In addition, the technology now supports numerous computer platforms (PC's, MAC's, and Unix platforms), thereby providing platform independence.In contrast, the development of software to interact with a microprocessor ( embedded controller) that is used to monitor and control a space experiment has generally been a unique development effort. With current browsers, users not only view but also interact with remote sites. The simple World Wide Web browsers (such as earlier versions of Netscape, Mosaic, and Internet Explorer) that resided on personal computers just a few years ago only enabled users to log into and view a remote computer site. Internet technology has been expanding at a phenomenal rate. The NASA Lewis Research Center is developing software tools to bridge the gap between the traditionally non-real-time Internet technology and the real-time, embedded-controls environment for space applications. Embedded Web Technology can also be used to simplify an Embedded System's internal network.Įmbedded Web Technology: Internet Technology Applied to Real-Time System Control ![]() Embedded Web Technology decreases the cost of developing and maintaining the user interface by allowing the user to interface to the embedded system through a web browser running on a standard personal computer. Embedded Web Technology is the merging of Embedded Systems with the World Wide Web. The client and server systems can consist of differing hardware and software platforms but the World Wide Web standards allow them to interface without knowing about the details of system at the other end of the interface. World Wide Web standards have been developed in the passed ten years with the goal of allowing servers and clients to intemperate seamlessly. The user interface hardware and software along with the interface to the embedded system are typically unique to the system for which they are built, resulting in extra cost to the system in terms of development time and maintenance effort. Embedded Web Technology: Applying World Wide Web Standards to Embedded SystemsĮmbedded Systems have traditionally been developed in a highly customized manner.
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