Casting a crystal ball on the future of process instrumentation and process measurements

Higham, E.H.

doi:10.1109/imtc.1992.245052

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…'s domain' parameters were used in the controller performance assessment by Kendra and Cinar [36], who recommend the use of measures that coincide with classical and modern frequency domain design specifications. Higham [37] states that it is important to gather the whole signal from a turbine flowmeter, including the noise, to obtain its wide frequency response. He supported the use of distributed fieldbus nodes for turbine flowmeter signal acquisition and analysis, as the communication bottleneck in a centralized system restricted the frequency spectrum of the measurement signal to 1 Hz.…”

Section: Monitoring Approachesmentioning

confidence: 99%

Distributed On-Line System for Process Plant Monitoring

Ahsan

Grosvenor

Prickett

2006

Proceedings of the Institution of Mechanical Engineers, Part E:

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This paper describes a methodology for monitoring industrial processes and plant that can be implemented cost-effectively within small-to-medium enterprises. The methodology is based on a network of 8-bit microcontrollers that communicate with each other on a controller area network bus. Ethernet connectivity is provided so that remote users can access the system on the internet. The software models developed for data acquisition nodes and the design of remote user interfaces and supervisory nodes are also explained. The system is aimed at providing specific maintenance guidance and fault identification, rather than gathering data for off-line analysis. Overly complicated processing is avoided to make real-time implementation possible, using 8-bit microcontrollers. The methodology emphasizes the use of process controller signals for fault detection and sensor signals for fault isolation. The suitability of the methodology is explored by acquiring signals from a laboratory-based process rig. Suitable monitoring techniques for the system in time and frequency domains are also discussed.

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Section: Monitoring Approachesmentioning

confidence: 99%

Distributed On-Line System for Process Plant Monitoring

Ahsan

Grosvenor

Prickett

2006

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Fieldbus represents a step towards decentralization and increasing the quality of the control process [2]. Also, other advantages of the fieldbus concept are its modularity, the possibility of expanding the installations and the ability to have intelligent devices that can communicate both for data transfer and maintenance and configuration [3,4]. A different design approach was to consider the network systems within the process control as columns of real-time distribution systems [5].…”

Section: Introductionmentioning

confidence: 99%

Industrial Internet of Things Gateway with OPC UA Based on Sitara AM335X with ModbusE Acquisition Cycle Performance Analysis

Ventuneac,

Gaitan

2024

Sensors

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This article presents the hardware and software architectures used to implement the Modbus Extension (ModbusE) IIoT gateway, the performance of the acquisition cycle at the PRU real-time programmable core level, the acquisition cycle communication flow—dispatcher—OPC UA server (Linux)—OPC UA client (Windows) as well as the performance analysis of data communications between the IIoT ModbusE gateway and the OPC UA client (Windows). In order to be able to implement both the ModbusE acquisition cycle and the OPC UA server, the BeagleBone Black Board was chosen as the hardware platform. This board uses the Sitara AM335x processor (Texas Instruments (TI), Dallas, TX, USA) from Texas Instruments. Thus, the acquisition cycle was implemented on the PRU0 real-time core, and the OPC UA server, running under the Linux operating system, was implemented on the ARM Cortex A8 processor. From the analysis of the communication speed of the messages between the OPC UA client and the ModbusE servers, it was found that the ModbusE acquisition cycle speed was higher than the acquisition speed of the OPC UA client.

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“…Hence the manufacturers of those devices must provide "validation": mechanisms by which the credibility of process interfaces can be automatically measured. That this is important is apparent from statements such as Ted Higham's "between half and threequarters of shut-down time is due to false alarms caused by lack of confidence of the process operatives in the measurement information provided by the instrumentation" [6]. Many people have recognized the problem, though their attention has mostly been directed toward fault detection in an overall unit process.…”

Section: Introductionmentioning

confidence: 99%

Sensor, actuator and loop validation

Clarke

1999

IEE Master Class. Advances in Control Technology

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conomic pressures are dispersing machine intelligence away E from centralized computers toward distributed Fieldbus devices. Simultaneously, the control concept is being extended to include other operational factors such as quality assurance, process data management, just-in-time maintenance, and plant safety and availability. As credible sensing and actuation are essential prerequisites for advanced control, validation of the sensor and actuator interface is necessary. As such subsystems are linked to a range of different overall plant systems, we must consider generic validation and its reporting to the "next level up." This article discusses validation features which are best embedded in local devices. validation. He was a founding editor of IEE Proceedings, Part D , and is an associate editor of Aufomatica, an editor for the Inr J of Adaptive Conrrol and Signal Processing, and a founding editor of the new European Journal of Conrrol. In 1989 he was elected to the Royal Academy of Engineering.

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Casting a crystal ball on the future of process instrumentation and process measurements

Cited by 11 publications

References 2 publications

Distributed On-Line System for Process Plant Monitoring

Distributed On-Line System for Process Plant Monitoring

Industrial Internet of Things Gateway with OPC UA Based on Sitara AM335X with ModbusE Acquisition Cycle Performance Analysis

Sensor, actuator and loop validation

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