Abstract: A lighting system including a driver providing a first drive signal and a second drive signal; an LED array coupled to the driver and configured to receive the first second drive signals; a sensor positioned to sense light intensity for a zone; and an electronic controller. The electronic controller configured to control the driver to provide the first drive signal to the LED array; receive, from the sensor, a first light intensity; retrieve from the memory a task-to-sensor ratio for the sensor; retrieve from the memory a non-useful light intensity; determine an artificial light intensity based on first drive signal and the task-to-sensor ratio; determine the second drive signal based on a desired light intensity for the zone, the non-useful natural light intensity, and the artificial light intensity; and control the driver to provide the second drive signal to the LED array.

Abstract: Devices, systems and methods for controlling electrical loads in one or more areas. A method includes transmitting, with a microcontroller via a transceiver, a sync packet including a unique address of the lighting fixture control module to a bus. The method includes listening, via the transceiver, on the bus. The method includes placing the microcontroller into a master operation mode when a master sync timeout period expires without receiving a second sync packet including a unique address for a second master device from the bus. The method includes placing the microcontroller into a subordinate operation mode when the second sync packet is received from the bus during the master sync timeout period.

Abstract: Devices, systems and methods for controlling electrical loads in one or more areas. A method includes transmitting, with a microcontroller via a transceiver, a sync packet including a unique address of the lighting fixture control module to a bus. The method includes listening, via the transceiver, on the bus. The method includes placing the microcontroller into a master operation mode when a master sync timeout period expires without receiving a second sync packet including a unique address for a second master device from the bus. The method includes placing the microcontroller into a subordinate operation mode when the second sync packet is received from the bus during the master sync timeout period.

Abstract: System and method are provided where a plurality of luminaires, control switches, occupancy detectors, and photocells are connected to a central control module including a user interface which is used for setting up, testing, commissioning and maintaining the system; a memory card interface and associated memory card which can be used to load and save configuration data, update firmware, and log system operation. Lighting system can be set up and tested and then the configuration saved in a portable memory, such as on a memory card which can be transferred to another system where it is read to facilitate faster and easier configuring of the other system to parallel, or to be exactly like, the original system. Data stored on a portable memory can be automatically recognized to perform appropriate actions such as, for example: update configuration, or update firmware.

Abstract: System and method provide wireless distributed lighting control systems implementing a secure peer-to-peer, self-organizing and self-healing mesh network of actuators and system inputs. The system and method can be designed specifically for indoor and outdoor lighting where actuators include in-fixture, on-fixture and circuit control modules with ON/OFF and full range dimming capabilities, and system inputs include occupancy/vacancy sensors, daylight sensors and switches. A unique messaging protocol facilitates wireless and wired communication between actuators and system inputs, and provides web-based commissioning and monitoring of the lighting control system using a wireless access point accessible from a local network or Internet which can provide an intuitive and easy to use Graphical User Interface (GUI).

Abstract: System and method are provided where a plurality of luminaires, control switches, occupancy detectors, and photocells are connected to a central control module including a user interface which is used for setting up, testing, commissioning and maintaining the system; a memory card interface and associated memory card which can be used to load and save configuration data, update firmware, and log system operation. Lighting system can be set up and tested and then the configuration saved in a portable memory, such as on a memory card which can be transferred to another system where it is read to facilitate faster and easier configuring of the other system to parallel, or to be exactly like, the original system. Data stored on a portable memory can be automatically recognized to perform appropriate actions such as, for example: update configuration, or update firmware.

Abstract: A controller (10) for use with a hard disk (38) or other mass storage medium provides a memory cache (36). A block descriptor table (40 ) is divided into a plurality of sets (42), depending upon the size of the memory cache (36). Each set is similarly indexed to define memory groups (44) having tag, cache address, and usage information. Upon a read command, an index is generated corresponding to the address requested by the host computer, and the tag information is matched with a generated tag from the address. Each set is checked until a hit occurs or a miss occurs in every set. After each miss, the usage information (50) corresponding to the memory group (44) is decremented. When reading information from the storage device (32) to the memory cache (36), the controller (10) may selectively read additional sectors. The number of sectors read from the storage device may be selectively controlled by the user or the host processor. Further, a cap may be provided to provide a maximum number of sectors to be read.