Toshi Hasegawa1
Yokogawa advocates a field digital solution that improves productivity and reduces the total cost of ownership (TCO) in customer plants by maximizing the availability of their equipment and facilities. "Field wireless" is a new approach to field digital solutions. Yokogawa has been actively involved in standardization from the beginning and now offers ISA100.11a-based industrial wireless products. This paper introduces the ISA100.11a standard, a core technology of our field wireless solution, and then describes the features of the field digital innovation that provide new value-added solutions that make wireless technologies work together with existing wired instrumentation and IT technologies.
- Business Planning Division, Industrial Automation Marketing Headquarters
INTRODUCTION
Yokogawa has been leading the process automation industries as one of the pioneers in field digital technologies represented by the FOUNDATION fieldbus™ and Field Device Tool/Device Type Manager (FDT/DTM). It has also participated from the early stages in standardization activities in the technical fields of industrial wireless sensor networks which will be a step toward the next evolution, and has contributed to those industries. In addition, Yokogawa has been developing related products and offering solutions using them. In 2010, Yokogawa released the world's first field wireless devices which conform to the ISA100.11a wireless communication standard for industrial automation1. In July 2012, it launched the ISA100.11a compliant product for large scale plants. As a critical measure for realizing an ideal plant "VigilantPlant" which Yokogawa is aiming, the wireless solution using them was newly added to existing ones, making field devices intelligent, and field digital solutions which can be offered with intelligent field devices. This paper describes the technology of the ISA100.11a standard supporting field wireless communication, and the field digital innovations that provide new value added solutions through the integration and collaboration of the functions of this standard with existing wired instrumentation and IT technology.
CONDITIONS SURROUNDING PROCESS INDUSTRIES AND EXPECTATIONS FOR WIRELESS TECHNOLOGIES
Figure 1 Features and expected benefits of field wireless |
With recent global economic stagnation, global competition in the process automation industries is becoming intense and operation systems of plants have been changing. Improved quality, delivery and cost performance to satisfy various requirements in the market, and product strategies for better customer satisfaction are required. In addition, the industries are required to deal with CO2 emissions reduction for global warming countermeasures, energy savings through improvement of operating efficiency, and operations to secure the safety of residents around the plant in compliance with various regulations and so on. Under such users' business environments, automation suppliers are responsible for providing customers with solutions so as to secure their global competitiveness, global environmental conservation, and secure and safe operations, while keeping their investment costs at a minimum. The field wireless, which has recently been attracting attention, is expected to bring innovation to many industries.
Advantages of Introducing Field Wireless
The field wireless, which transmits process data and diagnosis data originating from field devices at sites via radio waves, can drastically reduce various costs and dangerous work tasks related to the wiring work of conventional wired instrumentation. No need of wiring work resolves many constraints, thus increasing the freedom of the installation of field devices and enabling an easy increase in the number of the points to be monitored. Figure 1 shows the features and expected effects of the field wireless.
Application for Reducing Life Cycle Cost
Wireless, with its feature of not needing wiring, is expected to be used in applications such as the mounting of devices on moving objects, temporary installation of devices, changes of monitoring points with ease, and arbitrary addition/removal of devices, which have been impossible in conventional wired instrumentation. Wireless technology has a potential to solve various problems in fields that have been difficult to solve so far. From the viewpoint of the life cycle of a plant, the values shown in Figure 2 can be provided to customers by leveraging the field wireless technology.
Figure 2 Reducing life cycle cost by using wireless
STANDARDIZATION TREND OF FIELD WIRELESS
Figure 3 shows the overview of various standardization activities related to field wireless technologies. The activities cover a wide range, including communication protocols, the coexistence management of radio waves to the power supply interface specifications of field wireless devices, and others. These standardization activities are still in progress and Yokogawa has been actively participating in such various standardization committees and has been committed to promoting industrial wireless technologies into all related industries. So far, although customers understand the usefulness of the introduction of wireless technologies into process automation industries, few of them have decided on its introduction because of concern over the reliability and security of the communication and interoperability matters. Because of these concerns, standardization activities for resolving issues of industrial wireless technologies started around 2005, in response to market demands.
Figure 3 Areas of activities related to industrial wireless standardization
Activities of the ISA100 Committee
The ISA100 committee is a standardization organization whose activities cover various wireless technologies in a cross sectional manner for industrial operations2. The committee was formed in 2005 as one of the standardization committees of the International Society of Automation (ISA). The committee works towards developing standards and related guidelines for implementing wireless systems in automation plant site contexts. The committee is made up of over 250 companies and organizations such as: end user companies, wireless technology providers, system vendors, field device vendors, integrators, researchers, consultants, government agencies, and consortiums. Experts in not only automation areas but also a wide range of technical areas covering networking, wireless chips and so on, are participating in this committee from around the world. To satisfy user demands in every market segment, various wireless technologies applied to possible situations of plants are uniformly treated as one of the ISA100 family of standards, and such technologies are discussed in respective subcommittees or working groups.
Figure 4 Wireless instrumentation using analog signals |
Standardization Activities for the ISA100.11a Standard
The ISA100 committee developed the ISA100.11a standard as the first project for the ISA100 family of standards, whose official description is "Wireless Systems for Industrial Automation: Process Control and Related Applications." The first edition of this standard was issued in 2009 titled "ISA100.11a-2009" being approved by the ISA100 standards committee. Later, the revised version titled "ISA100.11a-2011" was approved in 20113 and also approved as one of the U.S. national standards by the American National Standards Institute (ANSI) in December 2011. The ISA100.11a standard was submitted as a new work item proposal (NP) to the International Electrotechnical Commission (IEC) and the project in it is working for international standardization as the IEC 62734.
Technical Features of the ISA100.11a Standard
The ISA100.11a is an industrial wireless standard which was developed on the basis of the requirements of users in automation areas. It can be summarized in the following three technical features:
- A network standard applicable to a wide range of circumstances, covering monitoring applications to control applications, which features highly reliable and time deterministic communications, and high level security technologies.
- Superior network expandability, owing to open wireless mesh networks (2.4 GHz/IEEE802.15.4) ensuring the interoperability of devices from different vendors and IPv6-based backbone routing.
- An object oriented application layer equipped with flexibility and expandability which can implement various use cases to satisfy users' requirements. Existing protocols can be used through the tunneling protocol, and analog and binary input function blocks in the ISA100.11a native mode are also supported.
The ISA100.11a is an industrial wireless standard that has been developed looking toward the future and it is one of the critical technical factors for realizing the vision of the field digital solutions which Yokogawa has been advocating.
Figure 5 Innovative solution by combination of wireless and digital technologies
COLLABORATION BETWEEN WIRELESS TECHNOLOGIES AND DIGITAL TECHNOLOGIES
Take a look at digital technologies. Since telephones were invented, wired telephones have been used for a long time. Recently, mobile phones have replaced wired ones and are spreading quickly. If wireless transmission had just replaced the analog wired one as the transmission method of voice signals, our life would not have dramatically changed. Thanks to the digital technologies of a large variety of information services offered via smart phones such as net search, e-mail, and online shopping, though, we can now enjoy a more comfortable life. Likewise, in the process of development of instrumentation technologies, 4-20 mA wired analog instrumentation has evolved to full digital instrumentation represented by the FOUNDATION fieldbus™. As a result, filed devices are able to not only transmit conventional process data but also execute autonomous functions such as transmitting high precision data and self diagnosis information. In wireless instrumentation too, the digital technologies can provide solutions offering more value in addition to that offered in the case of conventional wired instrumentation. To be specific, the digital technologies enable remote monitoring, multimedia monitoring, enhanced precision monitoring by changing from point measurement to planar measurement with a ten times greater number of field sensors, and the like. It is crucial that field devices incorporate intelligent functions.
Figure 6 ISA100.11a technologies supporting three solutions |
Wireless Technologies and Digital Technologies
Collaboration between wireless technologies and digital technologies is not simply replacing communication media from wired to wireless as shown in Figure 4, but providing customers with newly value added field data processed by the digital technologies as shown in Figure 5. In other words, what is important is not just completely replacing wired technologies of instrumentation with field wireless technologies, but providing customers with optimum solutions by combining the field wireless technologies with existing wired digital instrumentation and IT technology, to respond to the reliability and cost requirements of customers.
Collaboration of Three Solutions with the ISA100.11a Standard
The aim of the field digital solution is to integrate three technologies, i.e., wired instrumentation, wireless instrumentation, and IT technology, making them collaborate with each other, and to provide customers with unprecedented high value added solutions. This is referred to as "field digital innovation" in this paper. As shown in Figure 6, the ISA100.11a standard offers technologies which ensure high reliability, openness, and flexible network expandability to achieve the integration and collaboration of the following three solutions:
- Establishing multivendor interoperability
- Integration of existing wired instrumentation systems and wireless instrumentation
- Collaboration between field devices and the state of the art IT
ACTIVITIES FOR FIELD DIGITAL INNOVATION
Yokogawa launched products for a highly reliable large scale plant wide field wireless system based on the ISA100.11a standard in July 2012. These products constitute the latest platform for achieving the above mentioned field digital innovations. For the technical details of these products, please refer to the respective papers compiled in this Yokogawa Technical Report. Figure 7 illustrates the structure of the field wireless system which is classified into four layers, i.e., field wireless device, wireless network, control/monitoring, and solution. Summaries of the technical requirements and relevant technologies of each layer are also shown. Most of those in the field device layer and wireless network layer in this figure are covered by the ISA100.11a technologies.
Figure 7 Technical requirements and relevant technologies of the field wireless system
The robustness, reliability, flexibility and expandability in these two lower layers ensure the offer of added value to satisfy a wide range of customer demands in the higher levels of the control/monitoring layer and the solution layer.
For research and development in the control and monitoring layer, Yokogawa attained the results of research on a PID control algorithm shown in Figure 8 in 2006, which compensates for packet losses in a wireless network system4. This technology achieves a stable control even when a packet loss occurs during wireless communications, and this helps wireless technologies be used in a wider range of applications. Yokogawa has been engaged in the incubation of technologies required for field wireless control from the early stages, although this algorithm has not yet been implemented into our products.
As for the solution layer, Yokogawa's research and development department has been working on the augmented reality (AR) technology as shown in Figure 8. This provides customers with new added value which they can innovate in their field operations by combining IT and field wireless technologies. For example, it can provide solutions such as for field operation assistance and safety management by showing wireless network connection conditions or standard operation procedure (SOP), describing the setup steps of a field device.
Figure 8 Results of research and development of field wireless related technologies
CONCLUSION
To increase global competitiveness, keep up global environmental conservation, and secure safety in plant operations, field wireless technology is expected to provide customers with innovative solutions, resolving the problems which they have been unable to solve with conventional wired instrumentation. With a vision of field digital solutions, Yokogawa, is committed to the research and development of field wireless technologies and products with reliability, openness, and flexible expandability, applying the ISA100.11a standard from the user's point of view. The field wireless is not limited to replacing wiring, but can be a platform providing solutions, such as for abstraction, visualization and decision making assistance of the information, which can add high value to the data collected in the fields. On top of this, Yokogawa will develop field digital innovations by integrating wired instrumentation systems with IT and making them work together, thus solving customers' problems.
The sources of ideas for solutions can be found at operations sites, and potentially useful applications unique to wireless systems and beyond our imagination may be latent there. Therefore, Yokogawa, as a solution company, will openheartedly listen to customers' opinions and strive to solve on site problems, keeping in mind that an industrial site is a treasure trove of solutions.
REFERENCES
- Shuji Yamamoto, Naoki Maeda, et al., "World's First Wireless Field Instruments Based on ISA100.11a," Yokogawa Technical Report English Edition, Vol. 53, No. 2, 2010, pp. 13-16
- T. Hasegawa, "Industrial Wireless Standardization - Scope and Implementation of ISA SP100 Standard," SICE Annual Conference 2011, September, 13-18, 2011, at Waseda University, Tokyo, Japan
- The International Society for Automation (ISA), "ISA-100.11a-2011 Wireless systems for industrial automation: Process control and related applications," 2011
- R. Okano, T. Ohtani, et al., "PID Controller which Compensates the Packet Loss in Networked Control System," Transactions of the Society of Instrument and Control Engineers, Vol. 46, No. 8, 2011, pp. 480-485
- FOUNDATION fieldbus and HART are registered trademarks of the Fieldbus Foundation™ and HART Communication Foundation, respctively.
- Other brand names in this paper are the trademarks or registered trademarks of each company.
Industrias
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Agua y agua residual
Yokogawa ha estado suministrando soluciones de control para la producción hídrica sostenible desarrollando tecnología con mayor eficiencia energética, ayudando a reducir la huella de carbono de las operaciones y fabricando productos de gran solidez que protegen el ambiente contra los contaminantes. Con nuestra tecnología de vanguardia y amplios conocimientos de las aplicaciones, trabajamos con usted para proveer soluciones hídricas sostenibles que impulsen su negocio y agreguen alto valor a lo largo del ciclo de vida de la planta. Nuestra tecnología y nuestros productos mejoran el desempeño de las plantas y garantiza que puedan operar competitivamente en los mercados del agua de hoy, así como reducir sus costos operativos. Yokogawa brinda apoyo en una amplia gama de aplicaciones para el control del agua en los mercados del agua tanto públicos como privados.
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Bocas de pozo y separación
La boca de pozo proporciona la interfaz estructural y la presión que contiene para el equipo de perforación y producción. El control de la presión superficial es proporcionado por un ensamble de válvulas con medidores y obturadores (árbol de Navidad), que se instala en la parte superior de la boca de pozo. Las válvulas de aislamiento y los equipos de obstrucción controlan físicamente el flujo de los fluidos del pozo cuando el pozo está en producción. Varios paquetes de automatización se añaden al monitor local o remoto, controlan y optimizan la producción de cada pozo o almohadilla de múltiples pocillos. Los separadores de campos petroleros emplean un recipiente a presión para separar así los fluidos producidos en los pozos de petróleo y gas en componentes gaseosos y líquidos que se transfieren a continuación a las tuberías o almacenamiento localizados en función de la infraestructura de las zonas.
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En cubierta
Al igual que su equivalente en tierra, el procesamiento y manejo en cubierta en las plataformas de producción preparan hidrocarburos extraídos para transportación. Yokogawa ofrece soluciones de control integrado y de monitoreo que maximizan la productividad y la disponibilidad de las operaciones en cubierta.
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Energía
A mediados de la década de 1970, Yokogawa inició su participación en el negocio de la energía con el lanzamiento del Sistema de control eléctrico EBS. Desde entonces, Yokogawa ha continuado firmemente con el desarrollo de nuestras tecnologías y capacidades para proveer los mejores servicios y soluciones a nuestros clientes en todo el mundo.
Yokogawa ha operado la red de soluciones de energía globales para jugar un papel más activo en el dinámico mercado de energía global. Esto ha hecho un posible un trabajo en equipo más unido dentro de Yokogawa, el cual conjunta nuestros recursos globales y nuestra especialización en la industria. Los expertos en el sector de energía de Yokogawa trabajan juntos para brindar a cada cliente la solución que se adapta mejor a sus requerimientos sofisticados.
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Energía geotérmica
La energía geotérmica puede generar un suministro estable de electricidad durante todo el año, ya que no depende de las condiciones meteorológicas. Además, como no hay combustibles que se quemen por encima del suelo y solo se liberan muy pequeñas cantidades de dióxido de carbono, es amigable con el medio ambiente. Hay abundantes recursos geotérmicos a lo largo del cinturón del Pacífico (también conocido como el "anillo de fuego"), en países como Japón, Filipinas, Indonesia, Nueva Zelanda, México, Costa Rica y Estados Unidos, así como Islandia, Turquía, e Italia que se encuentran en otras regiones de actividad geotérmica. Hasta la fecha, Yokogawa ha participado en 30 proyectos de generación de energía geotérmica en Japón, el Sudeste de Asia y otras regiones, proporcionando una variedad de tecnologías de medición y control que mejoran la confiabilidad y la eficiencia en el mantenimiento de sistemas de generación de energía geotérmica.
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Petroquímica y a granel
Las empresas productoras de petroquímicos, productos inorgánicos o productos intermedios se encuentran bajo una presión constante para equilibrar los costos y los márgenes al suministrar productos a sus clientes de manera oportuna y eficiente, manteniendo al mismo tiempo operaciones seguras y conformes con la normativa. Además, las empresas químicas tienen que adaptarse a la constante fluctuación de los precios de los insumos y la energía y tener la capacidad de proveer al mercado la combinación de productos más rentable.
Yokogawa ha estado supliendo las necesidades de automatización del mercado de productos químicos a granel globalmente y ha obtenido reconocimiento como líder en este mercado. Con productos, soluciones y especialización en la industria, Yokogawa entiende su mercado y las necesidades de producción y trabajará con usted para proporcionarle una solución confiable y rentable durante el ciclo de vida de su planta.
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Procesamiento y fraccionamiento
El procesamiento de gas natural está diseñado para controlar el punto de condensación del flujo de gas natural y separar los líquidos de gas natural para la venta y distribución. La eliminación de petróleo y condensados, la eliminación de agua, la separación de líquidos de gas natural y la eliminación de azufre y dióxido de carbono son procesos que se emplean para separar las impurezas en el alimentador que proviene de los yacimientos aguas arriba. En el proceso de fraccionamiento se extraen los efluentes líquidos de la planta de procesamiento de gas, que pueden estar compuestos de metano, propano, butano y pentano, para ser tratados en columnas de fraccionamiento separadas, y posteriormente pueden pasar a una planta de tratamiento de impurezas antes de ser vendidos como componentes separados.
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Producción flotante, almacenamiento y descarga (FPSO)
La unidad de Producción flotante, almacenamiento y descarga (FPSO) es una planta de producción flotante en altamar que almacena tanto el equipo de procesamiento como los hidrocarburos producidos. Las unidades de Producción flotante, almacenamiento y descarga (FPSO) son utilizadas por las compañías petroleras para lograr que sea económicamente viable producir petróleo en zonas remotas y en aguas más profundas.
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Refinación, procesamiento y almacenamiento de petróleo y gas
Gracias a sus innovadoras plataformas tecnológicas y su ejecución líder en la industria, Yokogawa tiene buena reputación en el mercado global como socio en soluciones pionero en la integración de tecnologías para todos los aspectos del ecosistema de petróleo y gas, desde el yacimiento hasta la empresa. Soluciones comprobadas que incluyen modelado de negocio predictivo, optimización de plantas y plataformas de automatización altamente confiables están apoyando a los operadores de refinación, procesamiento y almacenamiento a dirigir sus negocios con niveles de eficiencia óptimos. Yokogawa está ayudando a sus clientes a desarrollar sus estrategias de automatización, para garantizar años de utilización de activos altamente eficaz y sostenibilidad.
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Terrestre
La industria de exploración, desarrollo y producción terrestre se enfrenta a exigencias cada vez más altas y mayores desafíos con entornos cada vez más difíciles y hostiles en las que debe funcionar.
A medida que las oportunidades de los recursos de gas natural no convencionales, en particular el gas de esquisto, están creciendo en América del Norte, la solución total de Yokogawa juega un papel importante al ayudar a los clientes a satisfacer los desafíos de reducir tanto el CAPEX como el OPEX, mientras que las tecnologías integradas mejoradas aumentan la producción. Nuestra experiencia global y local constituye la base de nuestras soluciones totales únicas para satisfacer las necesidades de esta industria. Con expertos en exploración, desarrollo y producción terrestre que trabajan en oficinas por todo el mundo, ofrecemos un soporte rápido y extenso para satisfacer las demandas de nuestros clientes.
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