A wheel assembly of a vehicle (e.g., a forklift or another material-handling vehicle) is monitored to obtain information regarding the vehicle, including information regarding the wheel assembly, which may be indicative of how the vehicle including the wheel assembly is used (e.g., a duty cycle of the vehicle and/or the wheel assembly), a state (e.g., a degree of wear) of the wheel assembly, loading and shocks on the wheel assembly, and/or a state of an environment (e.g., environmental temperature, a profile, compliance, or other condition of an underlying surface beneath the wheel assembly), and which may be, for example, conveyed to a user (e.g., an operator of the vehicle), transmitted to a remote party (e.g., a provider), and/or used to control the vehicle (e.g., a speed of the vehicle). This may improve use, maintenance, safety and/or other aspects of the vehicle, including the wheel assembly.

The present invention relates to body position detection. In order to improve body position detection, a computer-implemented method is provided that comprises the steps of: a) receiving (210) accelerometer data from an accelerometer mounted on a user,

wherein the received accelerometer data comprises three acceleration components including a first acceleration component in a first axis direction, a second acceleration component in a second axis direction substantially perpendicular to the first axis direction, and a third acceleration component in a third axis direction substantially perpendicular to a plane formed by the first and second axes; and

wherein the first axis direction is parallel to a frontal axis of the user, the second axis direction is parallel to a longitudinal axis of the user, and the third axis direction is parallel to a sagittal axis of the user; b) determining (220), based on the received accelerometer data, at least one body position based on a comparison between an absolute value of a projection of a gravity vector on a plane formed by two of the first, second, and third axes and an absolute value of an acceleration component in a remaining axis direction.

The present invention relates to body position detection. In order to improve body position detection, a computer-implemented method is provided that comprises the steps of: a) receiving (210) accelerometer data from an accelerometer mounted on a user,

wherein the received accelerometer data comprises three acceleration components including a first acceleration component in a first axis direction, a second acceleration component in a second axis direction substantially perpendicular to the first axis direction, and a third acceleration component in a third axis direction substantially perpendicular to a plane formed by the first and second axes; and

wherein the first axis direction is parallel to a frontal axis of the user, the second axis direction is parallel to a longitudinal axis of the user, and the third axis direction is parallel to a sagittal axis of the user; b) determining (220), based on the received accelerometer data, at least one body position based on a comparison between an absolute value of a projection of a gravity vector on a plane formed by two of the first, second, and third axes and an absolute value of an acceleration component in a remaining axis direction.

Methods, systems, and apparatuses are provided for detecting and determining conditions of and conditions within a fluid conduit.

Methods, systems, and apparatuses are provided for detecting and determining conditions of and conditions within a fluid conduit.

A system and method for estimating a velocity of a vehicle, including obtaining readings of at least one inertial sensor that is attached to the vehicle, calculating a time difference between a time when an irregularity is sensed in a first location of the vehicle and a time when the irregularity is sensed in a second location of the vehicle, and calculating the velocity of the vehicle based on the time difference.

A system and method for estimating a velocity of a vehicle, including obtaining readings of at least one inertial sensor that is attached to the vehicle, calculating a time difference between a time when an irregularity is sensed in a first location of the vehicle and a time when the irregularity is sensed in a second location of the vehicle, and calculating the velocity of the vehicle based on the time difference.

A system includes a first and second sensor for a first and second body portion, wherein each sensor includes perturbation sensors for determining physical perturbations for each respective body portion in response to a body movement, each sensor includes a processor for determining orientation and velocity data for each respective body portion in response to the physical perturbations, a shape sensing unit coupled to a joint portion between the first and second body portions including an optical fiber configured to bend in response to the body movement, a light source for providing light into the optical fiber, a light sensor for sensing reflected light from the optical fiber in response to being bent, and a processor for determining curvature data associated with the joint portion, and a central processor for determining user movement data in response to the orientation and velocity data for each body portion and the curvature data.

A system includes a first and second sensor for a first and second body portion, wherein each sensor includes perturbation sensors for determining physical perturbations for each respective body portion in response to a body movement, each sensor includes a processor for determining orientation and velocity data for each respective body portion in response to the physical perturbations, a shape sensing unit coupled to a joint portion between the first and second body portions including an optical fiber configured to bend in response to the body movement, a light source for providing light into the optical fiber, a light sensor for sensing reflected light from the optical fiber in response to being bent, and a processor for determining curvature data associated with the joint portion, and a central processor for determining user movement data in response to the orientation and velocity data for each body portion and the curvature data.

Disclosed herein are aspects of a multiple-mass, multi-axis microelectromechanical systems (MEMS) accelerometer sensor device with a fully differential sensing design that applies differential drive signals to movable proof masses and senses differential motion signals at sense fingers coupled to a substrate. In some embodiments, capacitance signals from different sense fingers are combined together at a sensing signal node disposed on the substrate supporting the proof masses. In some embodiments, a split shield may be provided, with a first shield underneath a proof mass coupled to the same drive signal applied to the proof mass and a second shield electrically isolated from the first shield provided underneath the sense fingers and biased with a constant voltage to provide shielding for the sense fingers.