Abstract: Methods, apparatuses and systems for detecting multiple gaseous substances for detecting a plurality of target gaseous substances or chemical compositions, using, for example, a high-speed, tunable gas detecting apparatus. An example gas detecting apparatus may comprise: a light source configured to generate a light beam, a moveable mirror component configured to move between a plurality of positions, wherein each position of the moveable mirror component is associated with a narrow band corresponding with a gas absorption frequency range of a target gaseous substance or chemical composition, at least one optical component configured to condition an output light beam of the moveable mirror component, wherein a measurable attenuated optical signal is generated responsive to exposing a sample gaseous substance to the conditioned output light beam.

Abstract: The present disclosure provides a process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and at least one trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, reacting the reactant stream in the presence of a first catalyst at a first reaction temperature from about 25° C. to about 400° C. to produce an intermediate product stream comprising trifluoroacetyl iodide, and reacting the intermediate product stream in the presence of a second catalyst at a second reaction temperature from about 200° C. to about 600° C. to produce a final product stream comprising the trifluoroiodomethane.

Abstract: A metering valve includes a valve body, a valve element, a rotary servo, and a stepper motor. The valve body has a valve chamber, a fluid inlet port, a fluid outlet port, a metering valve control pressure inlet port, a servo control pressure inlet port, and a servo control pressure outlet port. The valve element is movably disposed within the valve chamber and defines therein at least a control pressure chamber and a return pressure chamber. The valve element is responsive to fluid pressure in the control pressure chamber to move between a closed position and a plurality of open positions. The rotary servo is rotatable about a rotational axis to a plurality of servo positions to thereby vary fluid pressure in the control pressure chamber. The stepper motor is responsive to commands to rotate the rotary servo to a commanded servo position.

Abstract: A button assembly for a telescopic hot stick is provided. The button assembly comprises a button housing, a button, and a fastener. The button housing defines a cavity and at least one groove, and the cavity has a bottom cavity surface. The button is disposed in the cavity and the button has a first end and a second end. The second end is configured to face the bottom cavity surface. The fastener is disposed within the at least one groove, and the fastener is positioned adjacent the second end of the button. The fastener is spaced apart from the second end to collectively define a gap between the second end and the fastener.

Abstract: An apparatus and method for switching premises in a convenient way. A method includes transmitting a request to a server for switching a first premises with a second premises. Further, the first premises being accessed using an access card on a first access terminal associated with the first premises. The method further includes receiving access credentials for the second premises from the server in response to the request. The method also includes encoding the access card with the access credentials to access a second access terminal associated with the second premises for permitting entry inside the second premises.

Abstract: Devices, methods, and systems for monitoring an aerosol density level in a self-testing fire sensing device are described herein. One device includes an adjustable particle generator configured to generate aerosol, an optical scatter chamber configured to measure an aerosol density level of the aerosol, and a controller configured to compare the measured aerosol density level with a threshold aerosol density level and stop the adjustable particle generator from generating the aerosol responsive to the measured aerosol density level reaching and remaining at or above the threshold aerosol density level for a particular period of time.

Abstract: Systems and methods for a stabilized evaporable getter for increased handleability is provided. In certain embodiments, a method includes preparing a first getter material, a second getter material, and a metal material. Additionally, the method includes mixing the first getter material, the second getter material, and the metal material into a mixed getter material. Further, the method includes placing the mixed getter material into a getter holder. Also, the heat-treating the getter holder at a temperature below an activation temperature for an exothermic reaction of the mixed getter material but above a melting temperature of the metal material.

Abstract: A system reduces risk of pathogen exposure within a space that is located within a facility having a plurality of spaces that periodically have one or more people within the space. The system includes one or more occupancy sensors that are configured to provide an indication of when the space is occupied and when the space is not occupied. A sanitizer is configured to sanitize surfaces within the space when activated. A controller is operably coupled with the one or more occupancy sensors and the sanitizer. The controller is configured to determine a designated time to sanitize the space based at least in part upon information received from the one or more occupancy sensors and to automatically instruct the sanitizer to sanitize surfaces within the space at the designated time.

Abstract: A video camera includes a camera for capturing a video stream and a controller that is operably coupled to the camera. The controller, which includes processing resources, is configured to determine a current utilization of one or more of the processing resources and to determine which of a plurality of video analytics algorithms should be executed based at least in part on the determined current utilization of the one or more processing resources. The controller is configured to execute two or more of the plurality of video analytics algorithms on the video stream to identify one or more events in the video stream, wherein the controller executes the two or more of the plurality of video analytics algorithms, and sends an alert in response to identifying one or more events in the video stream.

Abstract: Various embodiments are directed to a device for detecting fluid particle characteristics comprising: a collection fluid dispense assembly configured to selectively dispense a volume of collection fluid onto an absorbent media disposed within an internal sensor portion of a fluid composition sensor, producing a collection media based on interaction between the volume of collection fluid and the absorbent media; and a controller configured to determine, based on a particle image captured by an imaging device, a particle characteristic associated with a particle captured at the collection media.

Abstract: An apparatus and system is disclosed connected to at least one input/output (I/O) module and to at least one controller of an industrial distributed control system. The apparatus and system comprises a control network module having a control component that uses a processor to execute operating software that implements operating configurations for the control network module. At least one I/O port is connected to the control component that is configurable by the operating software to enable port configurations to connect the at least one I/O module to the control network module. An expansion component connected to the control component has at least one expansion port connected to the at least one controller. The expansion port connects the at least one controller to the control component for communicating data and control signals to and from the at least one controller to the at least one I/O module. A security component regulates access to the apparatus based upon one or more security attributes.

Abstract: Techniques are disclosed for improving daylight performance of a star tracker. A region of interest (ROI) within a field of view of sky is obtained. The region of interest is divided into sub-ROIs. Sub-ROIs including a candidate celestial object are identified. An angular velocity of each candidate celestial object is determined. The known celestial object is a candidate celestial object identified as having a angular velocity, during a time period, that is within a range of angular velocities about a known angular velocity associated with the known celestial object.

Abstract: Embodiments are directed to improving blended GNSS/inertial navigation system tolerance to external GNSS interference. A plurality of RF nulling circuits is coupled to at least two antennas and to the inputs of dual GNSS-receivers. The RF nulling circuits provide phase shift configuration data from RF signals input from the antennas to a virtual antenna position estimator. The virtual antenna position estimator determines virtual antenna positions based on the physical antenna position and the phase shift configuration data from each RF nulling circuit. The virtual antenna position estimator then provides the virtual antenna positions to a navigation system for determining at least one navigation parameter of the vehicle.

Abstract: Vehicle systems and methods are provided for assisting operation by providing indication of remaining control margin with respect to actuation of a user input device to adjust an inertial rate of a vehicle. An exemplary method involves identifying one or more effector limits for one or more effectors associated with an aircraft based at least in part on current aircraft state information and current actuation state information for the one or more effectors using a flight dynamics model associated with the aircraft, determining a range of potential effective input commands for a user input device associated with the one or more effectors to adjust one or more inertial rates of the aircraft based on the one or more effector limits, the current aircraft state information and the current actuation state information, and providing a user indication of the range of potential effective input commands.

Abstract: A motor control system includes a voltage source, a multi-phase motor, and a motor control circuit. The voltage source supplies a voltage at a maximum voltage magnitude. The multi-phase motor has a motor voltage rating that is less than the maximum voltage magnitude. The motor control circuit is coupled to the voltage source and to the multi-phase stator and is configured to energize each phase of the multi-phase stator with a voltage having a peak magnitude at or below the motor voltage rating voltage. The motor control circuit includes a multi-phase inverter, a multi-phase output filter circuit, and a duty-cycle control circuit. The duty-cycle control signal supplied by the duty-cycle control circuit and the multiphase output filter ensure that the peak magnitude of the voltage supplied to each phase of the multi-phase stator is at or below the motor voltage rating.

Abstract: An inlet system for an auxiliary power unit includes an inlet duct, and a frame coupled about the inlet duct. The frame defines an opening configured to be in fluid communication with the inlet duct. The inlet system includes a door having a first end opposite a second end. The door is coupled to the frame at the second end. The door is configured to move relative to the frame between a first position in which the door cooperates with the frame to inhibit airflow into the inlet duct and a second position in which the door is configured to enable the airflow into or out of the inlet duct. The door defines a ramp at the second end. A hook is spaced a distance apart from the ramp to define a gap configured to enable the airflow into or out of the inlet duct in the second position.

Abstract: A flow restrictor includes a first flowbody defining a first end portion, a second end portion opposite the first end portion and an orifice between the first end portion and the second end portion. The first end portion defines a plurality of first slots, and the second end portion defines a counterbore having a first diameter. The flow restrictor includes a second flowbody defining a plurality of second slots and having a second diameter proximate the plurality of second slots that is greater than the first diameter of the first flowbody. The second flowbody is configured to be received within the counterbore of the first flowbody.

Abstract: A fuel nozzle and a method of operating the fuel nozzle, can include a group of chambers located in the fuel nozzle, wherein the chambers can include an inner mixing chamber and an outer mixing chamber. The inner mixing chamber and the outer mixing chamber each can accept air and fuel separately and combine the air and the fuel to form a mixture of the air and the fuel. A first hole pattern and a second hole pattern can be configured in the fuel nozzle, wherein the fuel enters the inner mixing chamber through the first hole pattern and enters the outer mixing chamber through the second hole pattern. Furthermore, an angled discharge can be included with the inner mixing chamber, wherein the angled discharge slows an exit velocity of the mixture of the air and the fuel prior to exiting the fuel nozzle through a discharge end of the fuel nozzle.

Abstract: A method of commissioning a plurality of controllers includes identifying a plurality of controllers that are operably coupled to a network in a building management system. Each of the plurality of controllers are configured to control one or more of a plurality of building management system components within a building management system. A first controller is selected as a source controller. Two or more of the remaining controllers are selected as target controllers. A synch operation is initiated that synchs the control logic of the source controller with each of the two or more target controllers over the network, resulting in each of the two or more target controllers having the control logic of the source controller. The source controller and the two or more target controllers are subsequently used to control one or more respective building management system components of the building management system.