Systems and methods for low-latency calibration of the alignment of 3-axis accelerometers in accordance embodiments of the invention are disclosed. In one embodiment of the invention, a telematics system includes a processor, an acceleration sensor, a velocity sensor, and a memory configured to store an acceleration alignment application, wherein the acceleration alignment application configures the processor to determine vehicular forward acceleration information and vehicular lateral acceleration information, calculate a lateral acceleration vector, a forward acceleration vector, and a vertical acceleration vector using a forward incline vector and a lateral incline vector determined using the vehicular forward acceleration information and vehicular lateral acceleration information.

The present disclosure relates to an information processing device, an information processing method, and a program that enable simple and appropriate calibration. When a pen-type device incorporating an inertial measurement unit such as an IMU is moved and a drawn image corresponding to a track is displayed, calibration is implemented on the basis of a measurement value of the inertial measurement device in one stationary attitude and a latitude and an absolute azimuth of the inertial measurement device at that time when the pen-type device is inserted into a pen stand to be fixed in a predetermined direction. It is applicable to a device including an IMU.

A method to test a size of a hole includes causing a test probe to vibrate and contact multiple portions of an edge of the hole for a testing cycle when the test probe is inserted into the hole, measuring displacement of the test probe, by a sensor coupled to the test probe, as the test probe makes contact with the multiple portions of the edge of the hole, estimating a measurement of the size of the hole based on the displacement of the test probe and reference to calibrated measurements of reference holes, and outputting a notification indicative of an estimation of the measurement.

A method to test a size of a hole includes causing a test probe to vibrate and contact multiple portions of an edge of the hole for a testing cycle when the test probe is inserted into the hole, measuring displacement of the test probe, by a sensor coupled to the test probe, as the test probe makes contact with the multiple portions of the edge of the hole, estimating a measurement of the size of the hole based on the displacement of the test probe and reference to calibrated measurements of reference holes, and outputting a notification indicative of an estimation of the measurement.

Described herein are methods and systems for controlling a sensor assembly with a plurality of same type sensors. Sensors are operated in active and inactive states and have a corresponding performance parameter and reliability parameter that may be determined. The activation state of at least one of the sensors is changed based on an operational parameter. The performance parameter and/or the reliability parameter can then be updated.

The invention provides a resonant sensor comprising: a substrate; one or more proof masses suspended from the substrate to allow for movement of the one or more proof masses along a sensitive axis; a first resonant element having a first end and a second end, the first resonant element extending between the first end and the second end along the sensitive axis, wherein the first end is connected to the one or more proof masses through a non-inverting lever and the second end is connected to the one or more proof masses through an inverting lever; and an electrode assembly positioned adjacent to the first resonant element. A resonant sensor in accordance the invention comprises a resonant element that is suspended between two proof masses or between two portions of a single proof mass, and so is not connected directly to the substrate. This isolates the resonant element from thermal stress that might otherwise be transferred from the substrate.

The invention provides a resonant sensor comprising: a substrate; one or more proof masses suspended from the substrate to allow for movement of the one or more proof masses along a sensitive axis; a first resonant element having a first end and a second end, the first resonant element extending between the first end and the second end along the sensitive axis, wherein the first end is connected to the one or more proof masses through a non-inverting lever and the second end is connected to the one or more proof masses through an inverting lever; and an electrode assembly positioned adjacent to the first resonant element. A resonant sensor in accordance the invention comprises a resonant element that is suspended between two proof masses or between two portions of a single proof mass, and so is not connected directly to the substrate. This isolates the resonant element from thermal stress that might otherwise be transferred from the substrate.

An electronics system has a board with a thermal interface having an exposed surface. A thermoelectric device is placed against the thermal interface to heat the board. Heat transfers through the board from a first region where the thermal interface is located to a second region where an electronics device is mounted. The electronics device has a temperature sensor that detects the temperature of the electronics device. The temperature of the electronics device is used to calibrate an accelerometer and a gyroscope in the electronics device. Calibration data includes a temperature and a corresponding acceleration offset and a corresponding angle offset. A field computer simultaneously senses a temperature, an acceleration and an angle from the temperature sensor, accelerometer and gyroscope and adjusts the measured data with the offset data at the same temperature. The field computer provides corrected data to a controlled system.

An apparatus for diagnosing an abnormality of a vehicle sensor is provided. The apparatus includes a sensor configured to measure an acceleration and an angular velocity of a vehicle, a camera configured to generate a front time series image frame of the vehicle, and a controller configured to estimate the acceleration and the angular velocity of the vehicle by using the front time series image frame generated by the camera and diagnose an abnormality in the sensor based on the acceleration and the angular velocity of the vehicle estimated by the controller.

A MEMS system includes a gyroscope that generates a quadrature signal and an angular velocity signal. The MEMS system further includes an accelerometer that generates a linear acceleration signal. The quadrature signal and the linear acceleration signal are received by a processing circuitry that modifies the linear acceleration signal based on the quadrature signal to determine linear acceleration.