1
John E Seem, William A Huth, Robert J Fraune, Anita M Lewis, Tri V Ky: Method and apparatus for assessing performance of an environmental control system. Johnson Controls Technology Company, Foley & Lardner, April 18, 2006: US07031880 (170 worldwide citation)

A method and apparatus is disclosed for assessing performance of control applications in an environmental control network and for diagnosing performance problems. The apparatus includes a performance assessment and diagnostic display comprising a facility navigation tree, a system navigation tree an ...


2
John E Seem, Gaylon M Decious, Carol Lomonaco, Alex Bernaden III: Environmental control system and method. Quarles & Brady, December 21, 1999: US06006142 (147 worldwide citation)

The present invention provides a sequencing control strategy for environmental system controllers that takes better advantage of the capabilities of the system elements to enhance performance and reduce operating costs. Digital controller technology is included and operates in accordance with a stat ...


3
John E Seem: Integrated control and fault detection of HVAC equipment. Johnson Controls Technology Co, George E Haas, Quarles & Brady, May 1, 2001: US06223544 (146 worldwide citation)

Fault detection is implemented on a finite state machine controller for an air handling system. The method employs data, regarding the system performance in the current state and upon a transition occurring, to determine whether a fault condition exists. The fault detection may be based on saturatio ...


4
John E Seem, Gaylon M Decious, Carol Lomonaco, Alex Bernaden: Hybrid finite state machine environmental system controller. Johnson Controls Technology Company, Foley & Lardner, June 18, 2002: US06408228 (130 worldwide citation)

The present invention provides a sequencing control strategy for environmental system controllers that takes better advantage of the capabilities of the system elements to enhance performance and reduce operating costs. Digital controller technology is included and operates in accordance with a stat ...


5
Howard A Jensen, John E Seem: Technique for monitoring performance of a facility management system. Johnson Controls Technology Company, Foley & Lardner, May 14, 2002: US06389331 (113 worldwide citation)

A facilities management system is subdivided into a plurality of subsystems. The performance of the system is monitored by producing data which denotes a plurality of operational parameters for each of the subsystems. From that data, a global performance index is derived for each subsystem, thus pro ...


6
John E Seem: Method of intelligent data analysis to detect abnormal use of utilities in buildings. Johnson Controls Technology Company, Foley & Lardner, November 9, 2004: US06816811 (107 worldwide citation)

Outlier identification is employed to detect abnormally high or low energy use in a building. The utility use is measured periodically throughout each day and the measurements are grouped according to days that have similar average utility consumption levels. The data in each group is statistically ...


7
Howard A Jensen, John E Seem: Controller for use in an environment control network capable of storing diagnostic information. Johnson Service Company, Harness Dickey & Pierce, September 10, 1996: US05555195 (103 worldwide citation)

The present invention relates to a diagnostic system for use in a network control system. The diagnostic system is preferably utilized to analyze VAV box performance in an environmental control system such as a network facilities management system. The diagnostic system advantageously records temper ...


8
John E Seem: Model based economizer control of an air handling unit. Johnson Controls Technology Company, Foley & Lardner, July 9, 2002: US06415617 (100 worldwide citation)

A strategy for controlling an air side economizer of an HVAC system uses a model of the airflow through the system to estimate the load in two modes when minimum and maximum amounts of outdoor air are being introduced into the building. Transitions between minimum outdoor air and maximum outdoor air ...


9
John E Seem: Method and apparatus for adaptive demand limiting electric consumption through load shedding. Johnson Service Company, Foley & Lardner, May 9, 1995: US05414640 (89 worldwide citation)

A load shedding apparatus for limiting peak electrical demand in an electrical system to a target level through load shedding. The apparatus employs predictive control logic to estimate the amount of energy that needs to be shed in a predetermined future period. Preferably, the load shedding apparat ...


10
John E Seem, Gaylon M Decious: Fast automatic tuning of a feedback controller. Johnson Service Company, Harness Dickey & Pierce, October 22, 1996: US05568377 (79 worldwide citation)

A feedback controller configured to automatically tune a control system by determining proportional gain, integral time and/or derivative time control parameters based on estimates of process time delay, process time constant and process gain values which are monitored by the feedback controller. Th ...