Abstract: Methods for WiFi beamforming, feedback, and sounding (WiBEAM) are described. Codebook based beamforming feedback signaling and sounding mechanisms for use in wireless communications are disclosed. The methods described herein improve the feedback efficiency by using Givens rotation based decompositions and quantizing the resulting angles of the Givens rotation based decompositions using a range from a subset of [0, 2?]. Feedback may also be divided into multiple components to improve feedback efficiency/accuracy. Time domain beamforming reports for taking advantage of channel reciprocity while still taking into account practical radio frequency (RF) channel impairments are also described. Beamforming feedback that prioritized the feedback bits in accordance with the significance of the bits is also disclosed.

Abstract: A vehicle electrical system comprises a generator which provides electrical power to an electrical load. The generator includes two field coils. A first switch circuit is coupled with the first field coil and a second switch circuit is coupled with the second field coil. A control device, included in the electrical system, operates the first and second switch circuits to regulate the generator output voltage and, in the alternative, to further reconfigure and/or deactivate the switch circuits based on their operating states. The generator maybe further coupled with an electrical energy absorbing device and the control device maybe further configured to operate on a switch, coupled with the electrical energy absorbing device, in response to a shutdown condition, RPM, rate of change of RPM, and voltage transient.

Abstract: This invention relates to apparatus and systems for providing home and building security and condition monitoring. More particularly, the invention relates to a plurality of devices, including intelligent, multi-sensing, network-connected devices, that communicate dynamically with each other and a remote server.

Abstract: A damping system can include a sensor disposed to measure an amplitude of a speed ripple of a drive shaft of a generator, and can include a feedforward circuit connected to the sensor and to the generator. The feedforward circuit can determine a phase angle formed by a load resistance and a load capacitance driven by the generator, calculate a voltage signal value based on the amplitude and the phase angle, and can adjust a DC link voltage provided by the generator and across the load resistance according to the voltage signal value.

Abstract: Provided herein is an inventory management system for dispensing products from an enclosure, methods of securing products within the enclosure, use of the enclosure and for maintaining inventory. The inventory management system may include an enclosure having a self-locking door. The self locking door may include a door, a lock located on the door, a strike plate, wherein the strike plate controls the lock, and a sensor configured to detect the presence of a user and wherein the sensor controls the lock.

Abstract: The invention relates to a control loop (10) which is installed in a voltage regulator of a motor vehicle alternator and controls an output voltage of the latter by adjusting an excitation current of the alternator. The control loop includes, at the input, means for measuring (31) the output voltage by sampling, generating a measurement signal (Um), error-calculation means (13) generating an error signal (e) equal to a difference between the measurement signal (Um) and a set value (Uo), means for processing the error signal (e) including an amplifier (14) and generating a control signal (Ysat) and, at the output, means (35) for generating a control signal (PWM) controlling excitation control means in accordance with the control signal (Ysat). According to the invention, the processing means also include a phase-advance filter (24).

Abstract: The present invention relates to a device for acquiring electricity utilization information which comprises a data acquisition and processing circuit configured to detect an operation parameter about a coupleable power supply circuit; a non-isolated power supply configured to convert an AC power into a DC power to supply an appropriate operation voltage to the data acquisition and processing circuit; a data communication module configured to modulate the detected operation parameter onto a predetermined frequency, wherein the modulated operation parameter is transmitted with a predetermined data transmission rate, and the predetermined frequency is higher than the predetermined data transmission rate such that the transmitted operation parameter can be demodulated; and an isolation component configured to provide electrical isolation and signal transmission isolation to perform a coupling isolation for the modulated operation parameter.

Abstract: In the example embodiments as described herein there is at least a method and apparatus to perform operations including monitoring probe data of car and truck traffic on at least one road segment including more than one lane; based on the monitoring, determining that an occurrence of a traffic jam ahead of the car and truck traffic on the at least one road segment is probable or occurring; and in response to the determining, selectively notifying at least one of a car and truck of the traffic of required or prohibited changes to at least one of their position and speed on the at least one road segment to prevent an occurrence of a traffic jam on the at least one road segment.

Abstract: A method of controlling a wind turbine having a rotor and a generator for producing power, the wind turbine being designed for a nominal load, the method comprising the steps of: determining a current load acting on at least a part of the wind turbine; calculating a load error, the load error representing the difference between the nominal load and the current load; controlling the wind turbine based on the load error; wherein the step of controlling the wind turbine comprises altering a parameter of the wind turbine so that the power or torque produced by the generator is altered.

Abstract: The transmission and decoding of resource blocks (RBs) transmitted via a multiple-input multiple-output (MIMO) antenna having a plurality of transmit antennas is disclosed. Each RB includes a plurality of resource elements (REs). Each RE is reserved for one of a common reference signal (CRS) associated with one of the transmit antennas, a dedicated reference signal (DRS) including a single beamformed or precoded pilot, a DRS including a composite beamformed or precoded pilot, and a data symbol. Each RB may include a “control type” data symbol that indicates a DRS mode associated with the RB. In one DRS mode, each DRS includes a single beamformed or precoded pilot. In another DRS mode, each DRS includes a composite beamformed or precoded pilot. In yet another DRS mode, single beamformed or precoded pilots, and composite beamformed or precoded pilots, may coexist and be transmitted simultaneously within the same RBs or in different RBs.

Abstract: Systems, methods, and apparatuses for communicating information, altering access rights, and transferring power to and from an electronic programmable key are disclosed. Using a wireless channel of communication established between the key and a mobile device, information and access rights can be communicated from and to the electronic programmable key. Using the mobile communication device's network connection, a further channel of communication may be established between a control center and the electronic programmable key.

Abstract: A method and system for eliminating the low-frequency oscillation between generators. By way of measuring the absolute rotor angle of a generator and controlling the rotor rotational speed, the absolute rotor angles obtained through measurement are the same when each GPS pulse per second signal arrives. The absolute rotor angles are angles of the internal potential Eq of the generator leading a GPS reference vector. Through the absolute rotor angle, zero steady state error control of the frequency and the rotor angle is achieved and the position of the generator rotor can remain unchanged in the PPS determined rotating coordinate system, thus suppressing the low-frequency oscillation better even without the need of remote measurement and achieving automatic local balance of active power during variation of loads. Accordingly, the power fluctuation on transmission lines is decreased while safe and stable operation of a large-scale interconnected power grid is achieved.

Abstract: An antenna for reception and transmission of signals within an enclosure. The antenna includes a first lead for connection to a printed circuit board and a second lead. A plurality of vertical members extend in parallel to one another and spaced a predetermined distance apart. Each vertical member has a first end and a second end. A plurality of horizontal members is provided. Each horizontal member extends alternately between first ends of a pair of adjacent vertical members and second ends of a next pair of adjacent vertical members forming a connection between said first lead and said second lead.

Abstract: The personal panic alarm system is a personal domestic article that is carried or worn by an individual. The personal panic alarm system is adapted for use with a personal data device. The personal panic alarm system further comprises a panic button. When the panic button is activated, the panic button initiates a Bluetooth signal to the personal data device the personal panic alarm system is associated with initiating a predetermined automated communication link. The personal panic alarm system comprises a housing, a switch, a transceiver, a logic module, a battery, and an application.

Abstract: The embodiments herein relate to a method in a RAN node for determining which operator that should serve a device when it has been handed over from a source network to a target shared network. When the device has been handed over to the target shared network, the RAN node transmits, to a non-registered CN node in a non-registered domain, a request for an identity of the device. The RAN node transmits a request, to CN nodes in a registered domain, for a serving operator which has registered the device. The RAN node receives information indicating the serving operator. The RAN node determines that the same serving operator which served the identified device in the registered domain should also serve the device in the non-registered domain.

Abstract: A multi-engine locomotive configuration is disclosed wherein engine outputs to DC traction motors are controlled by connecting the alternators with rectifiers in series for each engine of a multi-engine locomotive. This configuration uses the minimum number of rectifying diodes, eliminates the need for chopper circuits and simplifies the method of controlling the sequencing and output of two or more engines. The approach, which reduces the parasitic power loss by reducing the number of diodes, also enables a simplified means to efficiently manage engine cooling without additional cost and complexity of electrically-driven radiator fans.

Abstract: A device for simultaneously identifying a plurality of surgical instruments or instrument groups includes a first detecting device having a first detection technology for detecting instruments and, if applicable, related instrument-specific information. The device also includes a second detecting device having a second different detection technology for detecting instruments and instrument information. Moreover, the device includes a comparing device for comparing the detection results of the two detecting devices. The comparing device outputs a positive evaluation regarding the correctness of the detected instruments if the two detection results are matching.

Abstract: A device for generating electrical energy from mechanical motion includes a buoy housing and at least one force modifier disposed at least partially within the interior of the buoy housing. The force modifier receives an input force and applies a modified force to another component. The force modifier includes a hydraulic system and the hydraulic system includes a first hydraulic piston having a first area and a second hydraulic piston having a second area, where the first area and the second area are not equal.

Abstract: The present invention provides a marine propulsion system that is suitable for any civilian and military marine vessels and which offers operational flexibility. The marine propulsion system includes a pair of ac busbars, each in parallel connection with a power converter. The respective power converters each connected in parallel to a propulsion motor.

Abstract: A method for home automation system is described. In one embodiment, the method may include receiving input regarding a list of predetermined activities. The method may further include receiving monitored activity data of at least one authorized user. The method may further include comparing the received monitored activity data with the received input regarding the list of predetermined activities, and operating at least one aspect of the home automation system based, at least in part, on the comparing.