Kinestral Technologies, Inc.

Halio, Inc.

Control4 Corporation

Hewlett-packard Development Company, L.P.

Walter Thomas Barnum

Jason Aaron Litzinger

Robert Don Bruhn, Jr

Christian Humann

Michael Scott Moulton

John B Bogdan

William S O'Dell

Douglas Frederick Brainard

Benjamin Nagel

Andrew McNiel

Luis Fernando Gomez

Hugues Duncan

James K Russell

A sky sensor device for measuring direct normal illuminance (DNE) value is described. One method controls a camera sensor to capture a series of exposure-bracketed images having a first dynamic range and generate an image from the series of exposure-bracketed images, the image having a second dynamic range higher than the first dynamic range. The method controls an illuminance sensor to measure a global illuminance value. The method determines a global horizontal diffuse value based on at least the image. The method determines a direct normal illuminance (DNE) value using the global illuminance value and the global horizontal diffuse value.

Sky sensor device

A sky sensor device for measuring direct normal illuminance (DNE) value is described. One sky sensor device includes a camera sensor to capture a series of images, an illuminance sensor to measure illuminance, and a processing device coupled to the camera sensor and the illuminance sensor. The processing device determines a DNE value using the series of images and the illuminance.

Sky sensor

A overcharge-aware electrochromic device driver for preventing overcharge of an electrochromic device is described. One driver applies a constant supply current to an electrochromic device from a power supply. The driver determines an amount of charge as a function of time and current supplied to the electrochromic device. The driver determines whether the amount of charge reaches an overcharge limit before a sense voltage reaches a first sense voltage limit. Responsive to the amount of charge reaching the overcharge limit, the driver sets the sense voltage as a second sense voltage limit that is lower than the first sense voltage limit, ceases the constant supply current, and applies one of a variable voltage or a variable current to the electrochromic device from the power supply to maintain the sense voltage at the second sense voltage limit.

Overcharge-aware driver for electrochromic devices

A system includes a gateway having a memory, and a processing device coupled to the memory. The processing device is to identify a first subset of a data stream associated with a smart window system. The first subset of the data stream includes sensor data that has changed more than a threshold amount. Responsive to identifying the first subset of the data stream, the processing device is to transmit the first subset of the data stream to a server device. The server device is to generate one or more instructions based on the first subset of the data stream. Responsive to receiving the one or more instructions from the server device, the processing device is to cause one or more electrochromic devices to be controlled based on the one or more instructions.

Cloud-based system for controlling electrochromic devices

A method includes receiving data from components of a smart window system and, responsive to determining that a first portion of the data corresponds to a first identifier, storing the first portion of the data in association with the first identifier. The method further includes receiving, via a graphical user interface (GUI) presented on a user device, a view request and, responsive to determining that the view request corresponds to the first identifier, retrieving the first portion of the data. The method further includes causing the GUI to be modified to display the first portion of the data and, responsive to user interaction with the GUI that was modified based on the view request, receiving, via the GUI presented on the user device, a change request to implement a change associated with electrochromic windows. The method includes causing a first component to implement the change associated with the electrochromic windows.

Remote management of on-site smart window activities and scheduler of smart window events

A distributed energy management system (EMS) for supplying power to a set of drivers that charge and discharge a set of electrochromic devices is described. One distributed EMS includes an external power supply interface to couple to an external power supply, a multi-device boost power supply comprising a set of batteries, and a driver interface to supply power to a set of drivers that charge and discharge a set of electrochromic devices. The distributed EMS also includes a communication subsystem to communicate with the set of drivers and EMS circuitry to supply power to the set of drivers, via the driver interface, based on a power state of the multi-device boost power supply and a state of the set of electrochromic devices.

Distributed energy management system

A method includes identifying components of a smart window system. The components include electrochromic devices, drivers, and one or more gateways. Each of the drivers is to control a corresponding electrochromic device and each of the drivers is to receive instructions from a server device via a corresponding gateway. The method further includes determining physical linking, network linking, and application linking of the smart window system. The method further includes displaying, via a graphical user interface (GUI), the components of the smart window system, the physical linking, the network linking, and the application linking. The method further includes determining a first component of the plurality of components is to be replaced by a new component, causing the new component to be configured based on configurations of the first component, and updating the GUI based on the new component that has been configured based on the configurations of the first component.

Cloud-based component linking in a smart window system

A system for causing electrochromic devices to be controlled is described. The system may include a memory and a processing device coupled to the memory. The processing device may receive a data stream from a driver controlling a set of electrochromic devices, transmit a first subset of the data stream to a server device, and store at least a second subset of the data stream in a data file in the memory. The processing device may receive one or more instructions from the server device and transmit the one or more instructions to the driver to cause the set of electrochromic devices to be controlled based on the one or more instructions.

A method and apparatus for device discovery and channel selection in a wireless networking environment are described. As part of an automatic network configuration process, a super node sequentially traverses the available channels, broadcasting discovery messages including the channel switching schedule. Wireless nodes that receive those broadcast messages switch channels in lock step with the super node, sending discovery replies on those channels over which the broadcast discovery messages are successfully received. An association is generated identifying accessible nodes and the channels through which those nodes may be accessed. An optimum channel may then be selected based on this association information. Sub-nodes may repeat the broadcast discovery messages, and relay any discovery replies to the super node. The super node may then identify sub-nodes that may be used as proxies to access nodes that would otherwise be inaccessible.

Device discovery and channel selection in a wireless networking environment

A method or system of enabling a wireless client device to select an access point based on at least two performance related parameters. A performance related parameter is a measurement of how efficiently a particular access point transfers data. By selecting an access point based on more than one performance related parameter, a wireless client device is more likely communicate with the most efficient access point. In addition, the wireless network as a whole will be more balanced and have a greater capacity if each of the wireless client devices is connected to the access point that provides the most efficient communications.

Intelligent wireless access point selection

A device and method are provided for detecting and configuring a solid state dimmer when wired in series or parallel with a load powered by an alternating current (AC) input. The device can comprise a microcontroller configured to be powered by the AC input. A zero-cross detector in communication with the microcontroller is capable of detecting when an AC waveform crosses zero and generating a corresponding pulse signal when the AC waveform crosses zero. A pulse analyzer can be included and configured to determine when the zero-cross detector is generating pulses exceeding a pre-determined time length threshold that represents a serial wiring configuration.

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Salt Lake City, UT, United States of America

Walter Thomas Barnum