A magnetic sensor includes a plurality of pairs of sensor elements, with each pair of sensor elements including two sensor elements that are oppositely disposed on a circumference of a circle arranged in a sensor plane of the magnetic sensor; and a sensor circuit configured to generate a first pulsed output signal based on a selected differential measurement signal that is indicative of a rotational speed of an object. The sensor circuit is configured to generate a plurality of differential measurement signals, one for each of the plurality of pairs of sensor elements, where each of the plurality of differential measurement signals is derived from sensor signals generated by a corresponding pair of sensor elements. The sensor circuit is further configured to select a differential measurement signal having a greatest magnitude from among the plurality of differential measurement signals as the selected differential measurement signal.

A resolver interface system for a motor drive system includes a phase detector configured to be operatively connected to a rotation signal output of a resolver to receive a rotation signal therefrom and generate a phase difference signal. A differentiator is operatively connected to an output of the phase detector to convert the phase difference signal of the phase detector into a pulse output configured to be read by a processing system.

The systems and methods described herein include monitoring systems and methods that monitor speeds of a motor of a vehicle represented as a pulse signal indicative of a rotational position of the motor. The systems and methods include receive a pulse signal from a speed sensor coupled to a traction motor. The pulse signal is indicative of a rotational position of the traction motor. The systems and methods include analyze the pulse signal to identify per-revolution signal reoccurrences that meet designated criteria, and determine a defect based on the per-revolution signal reoccurrences that are identified. The defect is one or more of a wheel defect, a bearing defect, or a gear defect.

The systems and methods described herein include monitoring systems and methods that monitor speeds of a motor of a vehicle represented as a pulse signal indicative of a rotational position of the motor. The systems and methods include receive a pulse signal from a speed sensor coupled to a traction motor. The pulse signal is indicative of a rotational position of the traction motor. The systems and methods include analyze the pulse signal to identify per-revolution signal reoccurrences that meet designated criteria, and determine a defect based on the per-revolution signal reoccurrences that are identified. The defect is one or more of a wheel defect, a bearing defect, or a gear defect.

A display device is provided. The display device includes a speed sensor, a control module, an adjustment module, and a posture detection module. The speed sensor is for detecting a real-time speed during a falling process of the display device. The control module is configured for controlling an adjustment module to perform an adjustment operation according to the real-time speed. The adjustment module is configured for adjusting a posture of the display device during the falling process, so that a part of the display device that is not used for display is in contact with the ground. The posture detection module configured to detect a real-time posture during the falling process of the display device, and feeding real-time posture information back to the control module.

A safety system (10, 64) for safeguarding the surrounding area of a vehicle (50), wherein the safety system (10, 64) comprises an optoelectronic safety sensor (10) for monitoring the surrounding area, a first input (40) connectable to a first kinematic sensor (56) for determining a first speed value for the speed of the vehicle (50), and a control and evaluation unit (34, 64) configured to detect objects in the surrounding area based on sensor data of the optoelectronic safety sensor (10) and to evaluate whether or not the vehicle (50) initiates a safety reaction, taking into account the speed of the vehicle (50), further comprising an inertial measurement unit (38) for determining movement information of the vehicle (50), with the control and evaluation unit (34, 64) being configured to compare the first speed value and the movement information with each other.

A method for determining actual aircraft ground speed may comprise receiving a reference ground speed value; receiving a wheel speed value of a nose wheel of an aircraft; comparing the wheel speed value of the nose wheel and the reference ground speed value; and/or determining the actual aircraft ground speed based on the reference ground speed value and the wheel speed value.

A method for determining actual aircraft ground speed may comprise receiving a reference ground speed value; receiving a wheel speed value of a nose wheel of an aircraft; comparing the wheel speed value of the nose wheel and the reference ground speed value; and/or determining the actual aircraft ground speed based on the reference ground speed value and the wheel speed value.

One or more devices in an accident detection and recovery computing system may be configured to determine that vehicle accidents have occurred, collect and analyze accident characteristics and other related data, and providing customized accident recovery services. Mobile computing devices, alone or in combination with vehicle-based systems and external devices, may detect accidents or receive accident indication data. After determining that an accident has occurred, mobile computing devices and/or vehicle-based systems may be configured to determine accident characteristics, retrieve vehicle data and vehicle occupant data from one or external servers, determine the damages or potential damages resulting from the accident, and determine one or more accident recovery options or recommendations based on the accident damages. Various user interface screens may be generated and displayed via the user's mobile device and/or a vehicle-based display device to provide the user with accident information, damages, and recovery options or recommendations.

An apparatus and a method for controlling a rotating body in an electronic device are provided. The method includes emitting light to at least one indicator among a plurality of indicators having different reflectivities in a rotating body, receiving light reflected from the at least one indicator, detecting a rotation parameter of the rotating body based on an amount of the reflected light received from the at least one indicator, and controlling the rotating body based on the rotation parameter.