Method and apparatus for noise reduction of electromyogram signals
AssigneeGeneral Electric Company
InventorsKhalil John Maalouf, Yibin Zheng
Life of this patent
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Abstract
A system and a method are provided for reducing noise in Electromyogram (EMG) signals from an external abdominal surface to detect uterine contractions. The system comprises an EMG1 sensor configured to detect a first EMG signal and to generate a corresponding EMG1 input signal and an EMG2 sensor configured to detect a second EMG signal and to generate a corresponding EMG2 input signal. A signal processor is coupled to the EMG1 sensor and the EMG2 sensor. The signal processor processes the EMG1 input signal and the EMG2 input signal with a filter and sum technique to generate an EMG1 reduced noise signal that represents a magnitude of at least one contraction event and periodicity of a set of multiple contraction events.
Claims41
A system for processing electromyogram (EMG) input signals from an external abdominal surface to detect uterine contractions, said system comprising:
- an EMG1 sensor configured to detect a first EMG signal and to generate a corresponding EMG1 input signal;
- an EMG2 sensor configured to detect a second EMG signal and to generate a corresponding EMG2 input signal;
- and
- a signal processor coupled to said EMG1 sensor and said EMG2 sensor, said signal processor being configured to process said EMG1 input signal and said EMG2 input signal with a filter and sum technique to generate an EMG1 reduced noise signal that represents a magnitude of at least one contraction event and periodicity of a set of multiple contraction events.
A method for processing electromyogram (EMG) input signals from an external abdominal surface to detect uterine contractions, said method comprising:
- generating an EMG1 input signal;
- generating an EMG2 input signal;
- processing said EMG1 input signal and said EMG2 input signal with a filter and sum technique to generate an EMG1 reduced noise signal;
- and
- processing said EMG1 reduced noise signal with an envelope detection method to generate an EMG1 display signal, wherein said EMG1 display signal represents a magnitude of at least one contraction event and periodicity of a set of multiple contraction events.
Dependencies are inferred from the claim text.