公开(公告)号：US20180010969A1

公开(公告)日：2018-01-11

申请号：US15386287

申请日：2016-12-21

Applicant: Massachusetts Institute of Technology

Inventor： Christine M. Weston ,  Joseph J. Lacirignola ,  David C. Maurer ,  David F. Aubin, JR. ,  Andrew P. Dumas ,  Ninoshka K. Singh ,  Jeffrey S. Palmer

IPC: G01L1/04 ,  A61B5/00 ,  A61B5/103 ,  G01L1/22

CPC classification number: G01L1/044 ,  A61B5/1038 ,  A61B5/6802 ,  A61B5/7225 ,  A61B2562/0261 ,  G01G19/4142 ,  G01L1/2268

Abstract: A directional force sensor and sensing system are described. The directional force sensor includes a leaf spring and one or more load sensors disposed about the leaf spring such that in response to a force applied to the leaf spring, the one or more load sensors provide a signal. A controller is coupled to receive signals from the one or more directional force sensors and determines characteristics of forces applied to the directional force sensors.

公开(公告)号：US20180140233A1

公开(公告)日：2018-05-24

申请号：US15863027

申请日：2018-01-05

Applicant: Massachusetts Institute of Technology

Inventor： Joseph J. Lacirignola ,  Trina Rae Vian ,  Christopher J. Smalt ,  David F. Aubin, JR. ,  David C. Maurer ,  Mary Katherine Byrd ,  Christine M. Weston ,  Kerry A. Johnson ,  Shakti Davis ,  Olha Townsend ,  Paul T. Calamia ,  Edward H. Chen ,  Paula P. Collins

IPC: A61B5/12 ,  G01H3/12 ,  A61B5/00

CPC classification number: A61B5/125 ,  A61B5/6814 ,  A61B5/721 ,  G01H3/12 ,  G01H3/14

Abstract: Systems, apparatus, and methods for collecting, interpreting, and utilizing noise exposure data may include sensors to obtain an analog signal representative of impulse noise sound pressure and an analog signal representative of continuous noise sound pressure. At least one ADC may generate digital signals by sampling the analog signals at rates equal to or greater than twice the reciprocal of a minimum impulse noise rise time. Accelerometers may obtain data in close proximity to and remote from the sensors. At least one processor may include a first combining node to combine the digital signals to represent both the continuous noise and the impulse noise, a shock-artifact detection filter to identify a time frame including a shock artifact based on the accelerometry data, a frequency filter to generate a background-removed audio signal, an adaptive filter to estimate the shock artifact, and a second combining node to produce a shock-artifact-free audio signal.