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公开(公告)号：US20230123385A1
公开(公告)日：2023-04-20
申请号：US17906015
申请日：2020-03-10
发明人： Niall CAHILL , Keith NOLAN
摘要： A method of estimating power usage in an electricity distribution apparatus for a plurality of electrical loads, the electricity distribution apparatus comprising an electrical circuit including a plurality of branch circuits arranged in parallel, each branch circuit being coupled to one or more of the plurality of electrical loads, the electrical distribution apparatus being configured to distribute electrical power, received via a supply line from a supply of electrical power, across the electrical circuit, the method comprising: measuring voltage across at least one of the plurality of branch circuits; measuring current in a monitored branch circuit of the plurality of branch circuits; and detecting a first type of load change event if there is a change in the measured current and a corresponding change in the measured voltage, wherein the change in the measured current and the corresponding change in the measured voltage correspond to a change of load.
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公开(公告)号：US20240097702A1
公开(公告)日：2024-03-21
申请号：US18255291
申请日：2020-12-02
IPC分类号： H03M7/30
CPC分类号： H03M7/3068 , H03M7/3059
摘要： There is provided a data transmission and compression method arranged to compress and transmit data between an edge device and a remote server. The method comprises collecting data at the edge device, wherein the data is attributed to a plurality of signal signatures; generating a data matrix at the edge device; transforming the data matrix, wherein transforming the data comprises using a wavelet transform; compressing the data, wherein compressing the data comprises utilising an autoencoder; and transmitting the encoded compressed data to the remote server via a communication channel. The method further comprises, at the remote server, decompressing the data utilising an autoencoder; reconstructing the signal signatures using an inverse wavelet transform; and storing the reconstructed data signatures in a datastore on the remote server.
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公开(公告)号：US20230412191A1
公开(公告)日：2023-12-21
申请号：US18246446
申请日：2020-09-28
发明人： Daniel ZUCCHETTO , Niall CAHILL , Keith NOLAN
CPC分类号： H03M7/3059 , H03M7/3008
摘要： A method for compressing a signal, the method comprising: acquiring, via a signal recording module, a primary signal; modelling, via a processor, a model signal of the primary signal by: acquiring, via the processor, a sampled signal; acquiring, via the processor, a windowed signal; and extracting, via the processor: a fundamental frequency waveform having a fundamental magnitude and a fundamental phase; and at least one harmonic frequency waveform having a harmonic magnitude and a harmonic phase; wherein the model signal comprises the fundamental frequency waveform and the at least one harmonic frequency waveform; calculating, via the processor, an error signal between a reconstructed signal and the primary signal; determining, via the processor, an optimal gain from at least; an averaging step providing an average value, a predefined threshold, and a scaled signal.
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公开(公告)号：US20240319239A1
公开(公告)日：2024-09-26
申请号：US18578156
申请日：2021-07-12
发明人： Niall CAHILL
CPC分类号： G01R19/2513 , G01R19/2503 , G01R22/10 , G01R23/18
摘要： A method of detecting states of an electrical load from an electrical signal. This involves first providing a mathematical model for the electrical signal. A sliding window can then be used to es-timate parameters of the model. In doing this, a plurality of windows are determined for the electrical signal, a window function is applied for each of the windows, and parameters of the model are determined by interpola-tion. The waveform can then be reconstructed from the determined para-meters and subtracted from the reconstructed waveform from the original signal to obtain a residual. State transitions can then be determined where a difference between the reconstructed waveform and the original signal exceeds a threshold. States are detected and determined as existing for the time period between successive state transitions. Methods of monitoring an electrical system using this approach are also described, as are electrical devices adapted to perform such methods.
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公开(公告)号：US20230101366A1
公开(公告)日：2023-03-30
申请号：US17906011
申请日：2020-03-10
发明人： Niall CAHILL , Johannes VAN DE BELT , Keith NOLAN
摘要： Methods of detecting and characterising a noise event are described, together with apparatus adapted to perform such methods. A method of characterising a noise event, involves locating microphones in an environment and generating a training event at a location in the environment as a reference for a noise event. A sound sample is recorded at each microphone and phase differences between the sound samples are used to establish a noise event signature for an event at that location. A noise event may subsequently be identified by taking sound samples from the microphones associated with the noise event and using phase differences between them to identify the noise event by matching against noise event signatures. A computing system adapted to perform such methods is also described.
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