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Jianping Song

Bio: Jianping Song is an academic researcher from University of Texas at Austin. The author has contributed to research in topics: WirelessHART & Wireless network. The author has an hindex of 6, co-authored 12 publications receiving 754 citations.

Papers
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Proceedings ArticleDOI
22 Apr 2008
TL;DR: An introduction to the architecture of WirelessHART is given and several challenges the implementation team had to tackle during the implementation are described, such as the design of the timer, network wide synchronization, communication security, reliable mesh networking, and the central network manager.
Abstract: Wireless technology has been regarded as a paradigm shifter in the process industry. The first open wireless communication standard specifically designed for process measurement and control applications, WirelessHART was officially released in September 2007 (as a part of the HART 7 Specification). WirelessHART is a secure and TDMA- based wireless mesh networking technology operating in the 2.4 GHz ISM radio band. In this paper, we give an introduction to the architecture of WirelessHART and share our first-hand experience in building a prototype for this specification. We describe several challenges we had to tackle during the implementation, such as the design of the timer, network wide synchronization, communication security, reliable mesh networking, and the central network manager. For each challenge, we provide a detailed analysis and propose our solution. Based on the prototype implementation, a simple WirelessHART network has been built for the purpose of demonstration. The demonstration network in turn validates our design. To the best of our knowledge, this is the first reported effort to build a WirelessHART protocol stack.

634 citations

01 Dec 2006
TL;DR: This paper identifies the poor dynamic response of the standard PID algorithms in the case of lost communications and proposes an enhanced PID algorithm, which acts exactly the same as a standard PID block when there is no communication loss.
Abstract: For standard industrial process control systems, blocks in a control loop are executed periodically. That is, the sampling data is fed to control blocks by sensors at a fixed rate. At the same rate, control blocks do some calculations on the inputs and send out commands to actuators. This paradigm works well with reliable wireline networks, such as Fieldbus and ProfiBus. However, it is a justified assumption that part of the wired networks will be replaced by wireless networks. With wireless networks, we shall expect intermittent communication losses. In this paper, we first identify the poor dynamic response of the standard PID algorithms in the case of lost communications. An enhanced PID algorithm is proposed to improve the dynamic response under these conditions. When there is no communication loss, the enhanced PID block acts exactly the same as a standard PID block. Lost data is compensated by the integral component in the enhanced PID block. When communications are reestablished, the derivative component in the enhanced PID block eliminates possible spikes in the output. We evaluate the enhanced PID algorithm under several wireless scenarios. The results demonstrate the advantages of the enhanced PID algorithm.

54 citations

Proceedings ArticleDOI
13 Apr 2009
TL;DR: This paper presents Wi-HTest, the test suite designed to exercise WirelessHART devices, thus facilitating compliance assessment and discusses the detailed architecture of Wi- HTest and highlights several critical features like packet handling with accurate timing control and fault data injection.
Abstract: WirelessHART was released in September 2007 and is the first open wireless communication standard specifically designed for real-time process control applications. It is designed to the same standards as its wired counterpart for reliability and interoperability. To ensure the compliance with the HART Communication Protocol and the adherence to its strict timing requirements, all WirelessHART devices must be thoroughly tested and registered with the HART Communication Foundation (HCF). In this paper, we present Wi-HTest, the test suite designed to exercise WirelessHART devices, thus facilitating compliance assessment. We discuss the detailed architecture of Wi-HTest and highlight several critical features like packet handling with accurate timing control and fault data injection. We also describe a sniffer called Wi-Analys for capturing WirelessHART packets along with their timing information and a post process suite for analyzing the packets. These three tools together provide the complete compliance verification environment for WirelessHART. Based on the test specification developed by HCF, a representative test case is conducted for the purpose of demonstration. This test case in turn shows that Wi-HTest is a novel and efficient test suite for verifying the compliance of real-time WirelessHART devices.

42 citations

Proceedings ArticleDOI
05 Nov 2008
TL;DR: This demonstration builds a fully operational WirelessHART sensor network of multiple nodes and shows the creation of the network and the execution of process monitoring applications on the network.
Abstract: WirelessHART is the first open wireless standard for the process control industry. Previously we demonstrated a three-node prototype network based on an early release of the protocol stack. In this demonstration we build a fully operational WirelessHART sensor network of multiple nodes. We show the creation of the network and the execution of process monitoring applications on the network. This new demonstration network serves as a proof of concept for the revised WirelessHART standard and as a platform for our future research and experiments.

28 citations

Proceedings ArticleDOI
24 Aug 2009
TL;DR: This is the first attempt to develop location-aware application in WirelessHART networks and the results are very promising, with a median error less than 4 meters, which is good enough for the industrial requirement.
Abstract: WirelessHART is an emerging wireless communication standard that is targeted at the real-time process control industry.An example application of wireless communication in an industrial process control plant is the location of field engineers. The capability to locate personnel is a safety critical issue in process control plants because of high risks posed by toxic chemicals and other hazards. This paper presents the design, implementation and evaluation of a location-aware application built upon WirelessHART. The aim of this application is to locate a mobile device (and thus the person carrying the device) via the deployed WirelessHART network. The application is a software-based – no device modifications are required. Consequently, it is applicable to any WirelessHART network. In this application, both the mobile device (a handheld device or a badge carried by a worker) and field devices (attached to the plant process) periodically send health reports of their neighbors to the network manager. The network manager analyzes these reports and discards the untrustworthy pairs through comparison. Next, the network manager feeds the average received signal indications to a well-trained radio propagation model to derive the location. To evaluation our solution, several preliminary experiments are carried out and the results are very promising, with a median error less than 4 meters, which is good enough for the industrial requirement. To the best of our knowledge, this is the first attempt to develop location-aware application in WirelessHART networks.

12 citations


Cited by
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Journal ArticleDOI
TL;DR: The concepts of IoT, Industrial IoT, and Industry 4.0 are clarified and the challenges associated with the need of energy efficiency, real-time performance, coexistence, interoperability, and security and privacy are focused on.
Abstract: Internet of Things (IoT) is an emerging domain that promises ubiquitous connection to the Internet, turning common objects into connected devices. The IoT paradigm is changing the way people interact with things around them. It paves the way for creating pervasively connected infrastructures to support innovative services and promises better flexibility and efficiency. Such advantages are attractive not only for consumer applications, but also for the industrial domain. Over the last few years, we have been witnessing the IoT paradigm making its way into the industry marketplace with purposely designed solutions. In this paper, we clarify the concepts of IoT, Industrial IoT, and Industry 4.0. We highlight the opportunities brought in by this paradigm shift as well as the challenges for its realization. In particular, we focus on the challenges associated with the need of energy efficiency, real-time performance, coexistence, interoperability, and security and privacy. We also provide a systematic overview of the state-of-the-art research efforts and potential research directions to solve Industrial IoT challenges.

1,402 citations

Journal ArticleDOI
TL;DR: This paper proposes a brief framework that incorporates industrial wireless networks, cloud, and fixed or mobile terminals with smart artifacts such as machines, products, and conveyors and concludes that the smart factory of Industrie 4.0 is achievable by extensively applying the existing enabling technologies while actively coping with the technical challenges.
Abstract: With the application of Internet of Things and services to manufacturing, the fourth stage of industrialization, referred to as Industrie 4.0, is believed to be approaching. For Industrie 4.0 to come true, it is essential to implement the horizontal integration of inter-corporation value network, the end-to-end integration of engineering value chain, and the vertical integration of factory inside. In this paper, we focus on the vertical integration to implement flexible and reconfigurable smart factory. We first propose a brief framework that incorporates industrial wireless networks, cloud, and fixed or mobile terminals with smart artifacts such as machines, products, and conveyors. Then, we elaborate the operational mechanism from the perspective of control engineering, that is, the smart artifacts form a self-organized system which is assisted with the feedback and coordination blocks that are implemented on the cloud and based on the big data analytics. In addition, we outline the main technical features and beneficial outcomes and present a detailed design scheme. We conclude that the smart factory of Industrie 4.0 is achievable by extensively applying the existing enabling technologies while actively coping with the technical challenges.

1,108 citations

Journal ArticleDOI
TL;DR: It becomes critically important to study how the current approaches to standardization in this area can be improved, and better understand the opportunities for the research community to contribute to the IoT field.
Abstract: Technologies to support the Internet of Things are becoming more important as the need to better understand our environments and make them smart increases. As a result it is predicted that intelligent devices and networks, such as WSNs, will not be isolated, but connected and integrated, composing computer networks. So far, the IP-based Internet is the largest network in the world; therefore, there are great strides to connect WSNs with the Internet. To this end, the IETF has developed a suite of protocols and open standards for accessing applications and services for wireless resource constrained networks. However, many open challenges remain, mostly due to the complex deployment characteristics of such systems and the stringent requirements imposed by various services wishing to make use of such complex systems. Thus, it becomes critically important to study how the current approaches to standardization in this area can be improved, and at the same time better understand the opportunities for the research community to contribute to the IoT field. To this end, this article presents an overview of current standards and research activities in both industry and academia.

744 citations

Journal ArticleDOI
03 Apr 2012
TL;DR: This work overviews CPS research from both a historical point of view in terms of technologies developed for early generations of control systems, as well as recent results on CPSs in many relevant research domains such as networked control, hybrid systems, real-time computing,real-time networking, wireless sensor networks, security, and model-driven development.
Abstract: Cyber-physical systems (CPSs) are the next generation of engineered systems in which computing, communication, and control technologies are tightly integrated. Research on CPSs is fundamentally important for engineered systems in many important application domains such as transportation, energy, and medical systems. We overview CPS research from both a historical point of view in terms of technologies developed for early generations of control systems, as well as recent results on CPSs in many relevant research domains such as networked control, hybrid systems, real-time computing, real-time networking, wireless sensor networks, security, and model-driven development. We outline the potential for CPSs in many societally important application domains.

702 citations

Journal ArticleDOI
TL;DR: A survey of IDS research efforts for IoT is presented to identify leading trends, open issues, and future research possibilities, and classified the IDS proposed in the literature according to the following attributes: detection method, IDS placement strategy, security threat and validation strategy.

675 citations