Recalibrating a micromechanical sensor. The sensor is assigned a signal processing device for correcting the sensor signal on the basis of at least one previously determined initial trim value that is selected such that, given a defined sensor excitation, a production-related deviation of the sensor signal from a target sensor signal is compensated. The method for recalibrating the sensor includes: applying a defined electrical test excitation signal to the sensor structure, acquiring the corresponding sensor response signal, ascertaining a trim correction value for the at least one initial trim value on the basis of a previously determined relation between the sensor response signal and the trim correction value, and determining at least one current trim value for correcting the sensor signal, the determination of the at least one current trim value taking place on the basis of the at least one initial trim value and the ascertained trim correction value.

Methods, apparatus, systems, and computer program products for estimating error in an electric motor position sensor are disclosed. In a particular embodiment, an electronic control unit (ECU) for an electric motor receives, during a first state of operation of the electric motor, a first plurality of time samples of a first output signal from a position sensor, the first output signal indicative of a rotational position of the electric motor during the first state. The embodiment includes determining a first magnitude value for each of the first plurality of time samples of the first output signal, determining a first magnitude ripple value based upon the plurality of first magnitude values, and determining a first absolute angle error based on the first magnitude ripple value. The embodiment further includes determining an estimated error offset based on the first absolute angle error and storing the estimated error offset in a memory.

An illuminated sensor target includes a light source. Actuating the light source illuminates the sensor target. The illuminated sensor target is recognized by one or more sensors of a vehicle during a calibration process, and is used to calibrate the one or more sensors of the vehicle during the calibration process. The illuminated sensor target is illuminated during at least part of the calibration process, which may involve rotation of the vehicle about a turntable, with the illuminated sensor target positioned within a range of the turntable along with other sensors targets, which may also be illuminated.

A sensor for an encoder. The sensor includes a sensing circuit, an active setting module, an inactive setting module, and a sensor interface. The sensing circuit module is configured to generate an output signal related to a sensed characteristic. The active setting module includes a first pole width setting. The first pole width setting is associated with a first pole width for the encoder. The first pole width setting is accessible by the sensing circuit module. The inactive setting module includes second pole width setting. The second pole width setting is associated with a second pole width for the encoder. The second pole width setting is not accessible by the sensing circuit module. The sensor interface is configured for retrieving the second pole width setting from the inactive setting module and writing the second pole width setting to the active setting module.

Systems, devices and methods for calibrating or increasing the accuracy of light sensing devices. The methods can include calibrating a light sensing device with a calibration source that is adapted to mimic at least one representative spectrum.

A position sensing device for measuring a position, comprises a position sensing device for measuring a position; a plurality of sensors arranged to produce sense signals each being a function of an input phase representative of a position to be measured; a combiner circuit arranged to generate an error signal by combining the sense signals according to an array of weight factors; a processing block including a loop filter to filter the error signal and arranged to output a phase value representative of the position; and a feedback loop comprising a feedback signal unit arranged for receiving the output phase value and for adjusting based on the received output phase value of the array of weight factors.

A highly integrated programmable sensor interface with improved sensor signal calibration and conditioning functions is described. The programmable sensor interface according to the present invention sensor interface provides programmable gain, digital offset correction and bias for one or more signal channels on one chip on a per channel basis. According to another aspect of the invention, the sensor interface provides reference voltage and sensor biasing by using an on-chip precision voltage regulator. According to one aspect of the invention, multiple inputs are multiplexed and each is applied to a variable gain instrumentation amplifier, which connects to the output. The offset of a given channel is controlled by an on-chip DAC which has multiple digital storage registers, allowing each channel to have a unique, stored offset. Offsets and gains are programmed externally.

A remote sensor calibration system remotely calibrates sensors of various types in an automated fashion. The remote sensor calibration system receives sensor output, associated with one or more locations and one or more times, from a sensor and its peer sensor population. The sensor output from the sensor and its peer sensor population is compared to generate a correction factor. The correction factor is transmitted to the sensor and used to calibrate the sensor. Communication will typically occur via one or more wireless links allowing the sensors to be remotely calibrate while maintaining their mobility.

In some embodiments, a sensor device can include a base module including a battery and including a transceiver configured to communicate with a computing device. The sensor device may further include one or more sensor modules configured to releasably couple to the base module. Each sensor module may be configured to receive power from the base module and to provide data to the base module

A device and method for a MEMS device with at least one sensor is disclosed. A thermal element is disposed adjacent the MEMS device to selectively adjust a temperature of the MEMS device. A calibration operation is initiated for the sensor to determine a correction value to be applied to the sensor measurement based on the temperature. The correction value is stored.