Patent application number | Description | Published |
20080255682 | Online Fault Detection and Avoidance Framework for Distributed Factory Control Systems - An on-line fault detection and avoidance method is provided for industrial control systems that include multiple interacting process controllers. The method addresses the problem that not all faults can be determined and removed at the time of system design and testing. When a fault translates into a time-out condition in one or more controllers, symptoms are identified, persistence is measured, other involved controllers are identified, the fault condition is identified and control laws are reconfigured to avoid the fault condition in the future. | 10-16-2008 |
20090276060 | Mobile Function Block for a PLC Based Distributed Control System - Methods and architectures are described that provide function block mobility between PLCs. Each PLC configured with Mobile Function Blocks (MFBs) may forward and execute MFBs from each other. To enable MFB mobility over a communication bus, each PLC having one or more configured MFBs requires a Communication Function Block (CFB) and an MFB directory data block. Each PLC maintains an MFB directory data block to store its MFB directory which is used when other PLCs send requests to check the availability of MFBs they need to run new tasks. | 11-05-2009 |
20100280836 | FIRST RESPONDER DECISION SUPPORT SYSTEM BASED ON BUILDING INFORMATION MODEL (BIM) - A first responder support system is disclosed. The first responder support system includes a plurality of sensors deployed within a building, such that each of the plurality of sensors is configured to communicate an environmental condition, an emergency control module in communication with the plurality of sensors deployed within the building, the emergency control module is configured to receive the environmental conditions provide by the plurality of sensors, a modeling module configured to receive a building information model and to generate a building representation, and a responder support module in communication with the emergency control module and the modeling module and configured to generate an interactive rescue plan based on the building representation and the received environmental conditions. | 11-04-2010 |
20110093424 | Heat Flow Model for Building Fault Detection and Diagnosis - Systems and methods are described that provide a Heat Flow Model (HFM) graph modeling methodology. Embodiments automatically translate formal HVAC system descriptions from a Building Information Model (BIM) into HFM graphs, and compile the graphs into executable FDD systems. During an engineering phase, a user interface is used to enter parameters, conditions, and switches not found in the BIM. During a runtime phase, real-time data from an HVAC control system is input to the generated FDD system (HFM graph) for fault detection and diagnosis. | 04-21-2011 |
20120144187 | Application Layer Security Proxy for Automation and Control System Networks - Embodiments provide an application layer security proxy that protects substation automation systems. The application layer security proxy inspects a received, inbound data packet at the application layer, and either drops the data packet, forwards the data packet, or processes the data packet rather than dropping it in order to maintain the communications network connection, the later two according to a predefined role-based access control policy. The application layer security proxy calculates a round trip time for each reply to a received, inbound data packet and observes the bandwidth usage from the amount of bytes transmitted. Round trip time and bandwidth usage are used to detect abnormal communication traffic. | 06-07-2012 |
20130090777 | ADAPTIVE DEMAND RESPONSE BASED ON DISTRIBUTED LOAD CONTROL - Adaptive demand response based on distributed load control may be provided. A demand response request indicative of a demand response event for an area may be received. A maximum power consumption for the area during the demand response event may be determined based on the demand response request. One or more set points for the area during the demand response event may be determined prior to the demand response event. The one or more set points are determined based on the maximum power consumption. Prior to or during the demand response event, a real-time power consumption for the area may be calculated. When the real-time power consumption exceeds the maximum power consumption, one or more loads in the area may be controlled to maintain the real-time power consumption at or below the maximum power consumption. | 04-11-2013 |
20130110295 | ADVANCED HUMAN-MACHINE INTERFACE FOR COLLABORATIVE BUILDING CONTROL | 05-02-2013 |
20130226359 | SYSTEM AND METHOD OF TOTAL COST OPTIMIZATION FOR BUILDINGS WITH HYBRID VENTILATION - A method including: computing a total cost for a first zone in a building, wherein the total cost is equal to an actual energy cost of the first zone plus a thermal discomfort cost of the first zone; and heuristically optimizing the total cost to identify temperature setpoints for a mechanical heating/cooling system and a start time and an end time of the mechanical heating/cooling system, based on external weather data and occupancy data of the first zone. | 08-29-2013 |
20130231792 | System and Method of Energy Management Control - A method of controlling energy consumption in a building includes receiving occupancy data including at least one of occupant request data and occupant schedule data, receiving weather data including at least one of current weather measurement data and weather forecast data, generating an output control signal based on the occupancy data and the weather data, and transmitting the output control signal to a building automation system (BAS) of the building. The occupant request data includes a current request, and the occupant schedule data includes a predicted occupant schedule. The output control signal adjusts a building control device in a zone in the building. | 09-05-2013 |
20140074306 | METHOD AND SYSTEM FOR ENERGY CONTROL MANAGEMENT - In order to reduce computation time and cost involved with determining one or more optimal parameters for a pre-cooling strategy, for a modeled system, a two-step genetic algorithms is used to optimize energy consumption of the modeled system with respect to cost of the energy consumption. A first step of the two-step genetic algorithms determines a population of potential solutions that are used to initialize a second step of the two-step genetic algorithm. The second step of the two-step genetic algorithm determines the one or more optimal parameters for the pre-cooling strategy from the population output by the first genetic algorithm. | 03-13-2014 |
20140095935 | SIMULATION BASED FAULT DIAGNOSIS USING EXTENDED HEAT FLOW MODELS - In order to reduce computation time and cost involved with detecting and diagnosing a fault in a system, simplified representations of components of the system are used to estimate valid intervals for state variables at the components. Generic failure rules are configured to compare the estimated valid intervals to related intervals for the same state variables, from either observations or propagations, for overlap. Failure output vectors are generated based on the comparison, and the failure output vectors are compared to diagnostic matrices to determine a source of the fault. | 04-03-2014 |