Source: http://www.google.ca/patents/US7977924
Timestamp: 2014-04-24 18:49:15
Document Index: 77820180

Matched Legal Cases: ['Application No. 05724190', 'Application No. 200580006438', 'Application No. 2005800142124', 'Application No. 200780018710', 'Application No. 2006145434', 'Application No. 05746241', 'Application No. 2006145434', 'application No. 200580014212']

Patent US7977924 - Industrial process power scavenging device and method of deriving process ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsIn a particular embodiment, a process device includes a fluid disruption generation element to generate a fluid disruption within process fluid flowing through a pipe associated with an industrial process and a process variable sensor coupled to the disruption generation element to measure a process...http://www.google.ca/patents/US7977924?utm_source=gb-gplus-sharePatent US7977924 - Industrial process power scavenging device and method of deriving process device power from an industrial processAdvanced Patent SearchPublication numberUS7977924 B2Publication typeGrantApplication numberUS 12/263,625Publication date12 Jul 2011Filing date3 Nov 2008Priority date3 Nov 2008Also published asCN102203686A, CN102203686B, EP2350756A2, US20100109331, WO2010062575A2, WO2010062575A3Publication number12263625, 263625, US 7977924 B2, US 7977924B2, US-B2-7977924, US7977924 B2, US7977924B2InventorsRobert C. Hedtke, David A. Broden, Liang-Ju LuOriginal AssigneeRosemount Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (109), Non-Patent Citations (41), Referenced by (2), Classifications (10), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetIndustrial process power scavenging device and method of deriving process device power from an industrial processUS 7977924 B2Abstract In a particular embodiment, a process device includes a fluid disruption generation element to generate a fluid disruption within process fluid flowing through a pipe associated with an industrial process and a process variable sensor coupled to the disruption generation element to measure a process parameter. The process device further includes a power generation element adapted to generate an electrical output signal in response to the fluid disruption and a power storage component coupled to the power generation element. The power storage component is adapted to accumulate a charge based on the electrical output signal.
an adjustable spring coupled to the movable magnet and causing the movable magnet to reciprocate along an axis of the fixed conductive coil. Description
BACKGROUND The present disclosure generally relates to industrial process devices for use in industrial process monitoring and control systems. More particularly, the present disclosure relates to an industrial process power scavenging device and method of deriving process device power from an industrial process.
In process settings, control systems monitor and control various aspects of industrial and chemical processes. Generally, a control system communicates with field devices that are coupled to the industrial process. For example, field devices include process sensors that can be coupled to pipes associated with an industrial process. The term �field device� refers to any device that performs a function in a distributed control or process monitoring system, including sensor devices, actuators, other devices, or any combination thereof. The control system receives data related to measured process parameters from the field devices and can use such data to control various aspects of the process.
SUMMARY In a particular embodiment, a process device includes a fluid disruption generation element to generate a fluid disruption within a process fluid flowing through a pipe associated with an industrial process and includes a process variable sensor coupled to the fluid disruption generation element to measure a process parameter. The process device further includes a power generation element adapted to generate an electrical output signal in response to the fluid disruption and a power storage component coupled to the power generation element. The power storage component is adapted to accumulate a charge based on the electrical output signal.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram of a particular illustrative embodiment of a process control system including a field device having power generation element to derive power from an industrial process;
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS FIG. 1 is a diagram of a particular illustrative embodiment of a process control system 100 including a field device 102 having power generation element 118 to derive power from an industrial process. The process control system 100 also includes a control center 104 that is adapted to communicate with the field device 102 via a communications link 106, which may be a wired communications link or a wireless communications link, depending on the particular implementation.
In a particular embodiment, the annubar 302 and the power generation element 304 are positioned within a pipe associated with an industrial process. As process fluid flows around the annubar 302, the annubar 302 disturbs the flow, causing the process fluid to separate and generate small eddies or vortices in the process fluid flow that are shed alternately along and behind each side of the annubar 302. In some instances, the alternating �shedding� fluid flow causes fluctuating pressure that can be detected by a sensor. Additionally, the fluctuating pressure can result in movement of the conductive coil 308 relative to the unshaped magnet 306, inducing current flow within the conductive coil 308. The induced current flow can be provided to a power converter circuit, such as the power converter 224 illustrated in FIG. 2.
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