In a method for calibrating a sensor installed in a vehicle, a triggering signal for the calibration is automatically generated subsequent to the vehicle production process, during which calibration sensor signals are calibrated as a function of the inclination of the ground on which the vehicle is located.

Systems, devices, and methods are provided to facilitate the implementation of a “proning protocol” to improve a clinical outcome for a person having SARS-CoV-2 (COVID-19) or other condition that may benefit from spending time in the prone position. For example, a system may include a mobile device (e.g., smartphone, tablet, etc.) providing a proning application configured to manage a configuration and implementation of a proning protocol for a person and configured to receive sensor data from (a) a wearable sensor device secured to the person and including sensor(s) (e.g., accelerometer(s)) that monitor the person body position, and/or (b) other sensor(s) that monitor other physiological parameters relative to the proning protocol. The proning application may determine and output feedback to manage the person's position based at least on the received sensor data and defined parameters of the proning protocol.

Disclosed is a method for determining the installation orientation of an accelerometer system relative to a vehicle within which it has been installed. The method comprises obtaining a plurality of acceleration measurements within the co-ordinate frame of the accelerometer system and then analysing the distribution of these measurements to determine the relative installation orientation. In particular, the measurements can be grouped according to the vehicle movement phase at which they were obtained and the measurements within the groups then used to determine the lateral and horizontal planes of the vehicle.

An inverted two-wheel vehicle includes: an inverted two-wheel vehicle body; an acceleration sensor and a gyro sensor which are mounted on the same substrate; and an ECU. The ECU calculates a mounting angle error of the acceleration sensor with respect to the inverted two-wheel vehicle body based on an output value of the acceleration sensor obtained when the inverted two-wheel vehicle is brought into a stationary state in a state where a reference yaw axis of the inverted two-wheel vehicle is made coincident with a vertical direction, and corrects an output value of the gyro sensor by using the mounting angle error of the acceleration sensor with respect to the inverted two-wheel vehicle body as a mounting angle error of the gyro sensor with respect to the inverted two-wheel vehicle body.

An inverted two-wheel vehicle includes: an inverted two-wheel vehicle body; an acceleration sensor and a gyro sensor which are mounted on the same substrate; and an ECU. The ECU calculates a mounting angle error of the acceleration sensor with respect to the inverted two-wheel vehicle body based on an output value of the acceleration sensor obtained when the inverted two-wheel vehicle is brought into a stationary state in a state where a reference yaw axis of the inverted two-wheel vehicle is made coincident with a vertical direction, and corrects an output value of the gyro sensor by using the mounting angle error of the acceleration sensor with respect to the inverted two-wheel vehicle body as a mounting angle error of the gyro sensor with respect to the inverted two-wheel vehicle body.

A system and calibration method utilizes time averaging to suppress inherent capacitance mismatches or temperature variations in MEMS devices, such as a tri-axial accelerometer. An calibration interface circuit, operatively coupled the MEMS sensor, effectively cancels a range of non-ideal capacitive mismatches by employing pockets of calibration charges that are controlled by the duty-cycle of a clock.

A system and calibration method utilizes time averaging to suppress inherent capacitance mismatches or temperature variations in MEMS devices, such as a tri-axial accelerometer. An calibration interface circuit, operatively coupled the MEMS sensor, effectively cancels a range of non-ideal capacitive mismatches by employing pockets of calibration charges that are controlled by the duty-cycle of a clock.

A method for calibrating a micromechanical sensor element, a piece of primary information describing a motion-state of the micromechanical sensor element being ascertained by the micromechanical sensor element during a first time interval, a piece of reference information describing the motion-state of the micromechanical sensor element being ascertained during a second time interval on the basis of an acoustic signal emitted by a sound source, the first time interval and the second time interval overlapping at least partially with respect to time, and the reference information being compared with the primary information in order to calibrate the micromechanical sensor element.

A method for calibrating a micromechanical sensor element, a piece of primary information describing a motion-state of the micromechanical sensor element being ascertained by the micromechanical sensor element during a first time interval, a piece of reference information describing the motion-state of the micromechanical sensor element being ascertained during a second time interval on the basis of an acoustic signal emitted by a sound source, the first time interval and the second time interval overlapping at least partially with respect to time, and the reference information being compared with the primary information in order to calibrate the micromechanical sensor element.

Systems and methods for a time-based optical pickoff for MEMS sensors are provided. In one embodiment, a method for an integrated waveguide time-based optical-pickoff sensor comprises: launching a light beam generated by a light source into an integrated waveguide optical-pickoff monolithically fabricated within a first substrate, the integrated waveguide optical-pickoff including an optical input port, a coupling port, and an optical output port; and detecting changes in an area of overlap between the coupling port and a moving sensor component separated from the coupling port by a gap by measuring an attenuation of the light beam at the optical output port, wherein the moving sensor component is moving in-plane with respect a surface of the first substrate comprising the coupling port and the coupling port is positioned to detect movement of an edge of the moving sensor component.