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895 results about "Energy information" patented technology

Method and device for efficient frame erasure concealment in linear predictive based speech codecs

The present invention relates to a method and device for improving concealment of frame erasure caused by frames of an encoded sound signal erased during transmission from an encoder (106) to a decoder (110), and for accelerating recovery of the decoder after non erased frames of the encoded sound signal have been received. For that purpose, concealment/recovery parameters are determined in the encoder or decoder. When determined in the encoder (106), the concealment/recovery parameters are transmitted to the decoder (110). In the decoder, erasure frame concealment and decoder recovery is conducted in response to the concealment/recovery parameters. The concealment/recovery parameters may be selected from the group consisting of: a signal classification parameter, an energy information parameter and a phase information parameter. The determination of the concealment/recovery parameters comprises classifying the successive frames of the encoded sound signal as unvoiced, unvoiced transition, voiced transition, voiced, or onset, and this classification is determined on the basis of at least a part of the following parameters: a normalized correlation parameter, a spectral tilt parameter, a signal-to-noise ratio parameter, a pitch stability parameter, a relative frame energy parameter, and a zero crossing parameter.
Owner:VOICEAGE EVS LLC

Method and device for efficient frame erasure concealment in linear predictive based speech codecs

The present invention relates to a method and device for improving concealment of frame erasure caused by frames of an encoded sound signal erased during transmission from an encoder (106) to a decoder (110), and for accelerating recovery of the decoder after non erased frames of the encoded sound signal have been received. For that purpose, concealment / recovery parameters are determined in the encoder or decoder. When determined in the encoder (106), the concealment / recovery parameters are transmitted to the decoder (110). In the decoder, erasure frame concealment and decoder recovery is conducted in response to the concealment / recovery parameters. The concealment / recovery parameters may be selected from the group consisting of: a signal classification parameter, an energy information parameter and a phase information parameter. The determination of the concealment / recovery parameters comprises classifying the successive frames of the encoded sound signal as unvoiced, unvoiced transition, voiced transition, voiced, or onset, and this classification is determined on the basis of at least a part of the following parameters: a normalized correlation parameter, a spectral tilt parameter, a signal-to-noise ratio parameter, a pitch stability parameter, a relative frame energy parameter, and a zero crossing parameter.
Owner:VOICEAGE EVS LLC

An electricity energy information acquisition integrated platform

The invention relates to an electric energy information acquisition integrated platform, which includes a field terminal layer, a communication network layer, and a master station application layer. The field terminal layer can realize collection and remote transmission of field data in terms of different user types classified according to field user characteristics. The communication network layer can realize remote data transmission and load control administration by using hybrid networking technology. The master station application layer includes a database system, a front end processor system, an operation master station, a data analysis system, a WEB system, an automatic task system, and an external interface system; and can realize comprehensive electric energy information acquisition of six types of objects including an upper gateway, a lower gateway, a distribution/transformation gateway, high voltage users, lower voltage users and resident users, and realize operational administration and data analysis application function. The invention can realize metering of overall process including online of a power plant, power transmission/transformation, power distribution, and transmission to user, and information concentration acquisition, integrated storage management and distributed application of an examination gateway in an integrated platform.
Owner:JIANGSU ELECTRIC POWER CO +1

Smart management system for energy management and electricity transaction in virtual power plant and method for optimizing operation thereof

The invention discloses a smart management system for energy management and electricity transaction in a virtual power plant and a method for optimizing operation thereof. A distributive energy unit serves as terminal energy and an information source apparatus of the virtual power plant smart management system, and thus a distributive resource system is formed. The virtual power plant smart management system is composed of an operation data collection and management module, an enterprise resource management, prediction and resource deployment combination module, an electricity selling plan optimization module, a transaction platform module, a real-time scheduling optimization module, and a control scheduling execution and synchronous simulation function module. According to the invention, distributive energy information management which is featured by a distributive power generation and energy storage apparatus and a flexible load device is adopted. An entire system architecture is provided for implementing all necessary function modules, such as prediction, resource combination management and deployment optimization, power supply and scheduling optimization, market transaction, real-time monitoring and scheduling. The system and method of the invention have great potential in new energy sources, distributive power generation and electricity sell, and in future power system for realizing efficient demand side power management, and in power market environment after power reform.
Owner:刘隽琦

Distributed single-phase earth fault ranging system and ranging method thereof

The invention relates to a distributed single-phase earth fault ranging system that is used for realizing ranging of a fault on a high tension transmission line between two transformer substations. The system comprises: at least two sets of fault current detection device sets, which are installed at preset test points of a high tension transmission line; a remote wireless communication module; and a remote monitoring master station. The remote monitoring master station is respectively connected with the fault current detection device sets by the remote wireless communication module as well as receives fault currents collected by the fault current detection device sets by the remote wireless communication module; and the remote monitoring master station carries out comparison and an analysis according to positional data of the preset test points and length data of the high tension transmission line, so that a final fault position is obtained. In addition, a ranging method of the distributed single-phase earth fault ranging system is also provided. Power frequency fault current information and fault current travelling wave energy information are utilized to determine fault intervals; and different positioning equations are selected according to different fault intervals as well as fault point positions are determined; therefore, a dead zone problem can be solved, wherein the problem occurs when there are faults at a head and an end of a line, that is, when a fault point approaches a bus.
Owner:SHANGHAI JIAO TONG UNIV +1

Pilot protection method for direct current line current abrupt change of multi-terminal direct current transmission system

The invention provides a pilot protection method for the direct current line current abrupt change of a multi-terminal direct current transmission system. The method comprises the following steps of: 1, acquiring fault transient state current amperage; 2, calculating the current abrupt change in one period of time by using the acquired fault transient state current amperage, comparing the current abrupt change with a setting value according to the value of the current abrupt change and judging the direction of faults; and 3, distinguishing inside-area and outside-area faults by the cooperation of the current abrupt change directional elements at the terminals of a line; and if the directional element at each terminal is judged to have a forward directional fault, the fault is judged as the inside-area fault, and if at least one directional element is judged to have a reverse directional fault, the fault is judged as the outside-area fault. The method has the advantages that only current data is used, the required sampling rate is low, the current abrupt change is easy to calculate, the communication amount is small, and line faults can be rapidly detected; all energy information but a high frequency signal in a fault transient state is used, the signal energy is strong, and the protection is safety and reliable; and the method is applied to a parallel, a serial and a hybrid multi-terminal direct current system.
Owner:XI AN JIAOTONG UNIV

Treatment method, device and system for remaining running mileage of electric vehicle

The invention discloses a treatment method, device and system for remaining running mileage of an electric vehicle. The treatment method comprises the following steps: acquiring historical energy consumption information of unit mileage of vehicles of which the types are the same as the type of a current vehicle, and current energy information of unit mileage of vehicles running within a region in which a current vehicle runs, wherein the vehicles of which the types are the same as the type of the current vehicle include the current vehicle; determining the current energy consumption information of unit mileage of the current vehicle in the current running region based on the historical energy consumption information of unit mileage of the vehicles of the same type, and the current energy information of unit mileage of the vehicles running in the same region; acquiring the environment temperature of the current running region, and determining the quantity of the remaining dischargeable electricity of a battery of the current vehicle according to the environment temperature; and obtaining the remaining mileage of the current vehicle according to the current energy information of unit mileage of the current vehicle, and the quantity of the remaining dischargeable electricity of the battery of the current vehicle. The method disclosed by the invention solves the technical problem that the remaining driving mileage of the electric vehicle cannot be accurately obtained.
Owner:BEIJING ELECTRIC VEHICLE

Method for balancing network load based on wireless sensor energy information

The invention relates to a network load balancing method based on energy information of a wireless sensor, comprising the following steps: (1) Sink broadcasts an energy report message; (2) nodes receive an energy report of the Sink and then update and maintain local load forwarding tables; (3) the load allocation proportion born by various forwarding nodes and the load born by the various nodes are calculated; (4) the message is forwarded when local nodes are far away from convergent nodes compared with the forwarding nodes or are brother nodes of the same layer with the forwarding nodes; (5) various field values in the message are modified by self energy information and the message is forwarded to all the lower-level neighboring nodes or all the brother nodes of the same layer except the forwarding nodes; (6) when all the nodes receive the energy report message, the message forwarding is stopped; (7) after the energy report message is forwarded within a single period, propagation paths which reversely use the energy report message establish a load convergent route from sensing nodes to the convergent node Sink hop by hop; and (8) the convergent node Sink periodically sends out the energy report message and completes allocation and convergence of sensing data. The method solves the problems of network load balancing and network life cycle of a large-scale wireless sensor.
Owner:BEIHANG UNIV

Routing method of double-cluster head wireless sensor network

The invention discloses a routing method of a double-cluster head wireless sensor network. The method comprises the following steps: performing network initialization; performing temporary clustering, and collecting the positions and the energy information of intra-cluster ordinary nodes by selected temporary cluster head nodes; selecting out the optimal main cluster head node and the optimal secondary cluster head node by utilizing the particle swarm optimization algorithm according to the information of the intra-cluster ordinary nodes collected by the temporary cluster head nodes and the collection energy consumption and transmission energy consumption minimization criterion; selecting the next-hop node by every secondary cluster head node according to the distance from the secondary cluster head nodes to an aggregation node and the residual energy information at the data transmission stage, and transmitting data to the aggregation node by multiple hops. According to the routing method of the double-cluster head wireless sensor network disclosed by the invention, the problem that loads of cluster heads are overweight can be effectively relieved, the respective energy usage ratios of the two cluster heads are improved, the cluster heads are prevented from rapidly dying, the energy consumption of the network is balanced, and the life cycle of the whole network is prolonged.
Owner:JIANGSU UNIV OF SCI & TECH

Adaptive optimal envelope demodulation method

InactiveCN104792528AImprovement of Harmonic Wavelet Packet TransformAccurate divisionMachine bearings testingVibration accelerationEnergy information
The invention discloses an adaptive optimal envelope demodulation method, which is characterized by comprising the following steps: bearing fault vibration acceleration signals are acquired; improved harmonic wavelet packet transform is carried out on the signals; an improved harmonic wavelet packet kurtosis graph fused with energy indexes is drawn; the optimal frequency band is extracted according to the maximal spectral kurtosis in the kurtosis graph; modular operation is carried out on wavelet coefficients of the optimal frequency band to obtain an envelope, and FFT transform is carried out on the envelope to obtain an envelope spectrum; refinement is carried out on the envelope spectrum, and a fault type of the bearing is determined in the refined envelope spectrum. Two aspects of the prior art are improved: on one hand, conventional harmonic wavelet packet transform is firstly improved, the frequency band can be divided more precisely, the improved harmonic wavelet packet transform is combined with the kurtosis graph, the improved harmonic wavelet packet kurtosis graph is formed, the ability of detecting weak transient fault impact by the kurtosis graph is enhanced, and the application effects are improved; and on the other hand, energy information is fused in the kurtosis graph, and robustness of the kurtosis graph is improved.
Owner:NAVAL UNIV OF ENG PLA
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