Abstract: A method of correcting an error of a scanning LiDAR, may include: an initial value setting operation of designating an initial emission time point among a plurality of laser light emission time points of the scanning LiDAR; a designated value increasing operation of designating a laser light emission time point after the initial emission time point among the plurality of laser light emission time points; an error determining operation of determining whether an error is generated in the measurement time interval by applying the designated laser light emission time point to a pre-prepared error algorithm; and an error correcting operation of correcting the error of the measurement time interval by use of a pre-prepared correcting algorithm when it is determined that the error is generated in the measurement time interval.

Abstract: A reflective coating belongs to a reflection structure for reflecting a light beam emitted by a light source of an optical encoder, the reflection of the light beam being directed toward a photoreceptor. The reflective coating includes at least one flat lamella made of glass, a first face of which forms a connection surface on one portion of the reflection structure of the optical encoder. A second face of the lamella opposite the first face forms another connection surface to connect with at least one layer made of at least one material having a reflection coefficient greater than 96% coated with a protective layer.

Abstract: A battery-free rotation detecting device includes a rotating carrier, a first magnetic element, a second magnetic element and at least one detection coil set. The rotating carrier can be assembled with a rotating element. The first magnetic element is disposed to the rotating carrier, and the second magnetic element is also disposed to the rotating carrier but spaced from the first magnetic element. The at least one detection coil set is located between the first magnetic element and the second magnetic element. The rotating carrier can be driven by the rotating element so as further to rotate the first magnetic element and the second magnetic element synchronously. The at least one detection coil set generates an electrical signal upon when a change of the magnetic field between the first magnetic element and the second magnetic element is detected.

Abstract: A system includes a laser catheter and a rotating optical member to receive a laser beam along an optical path and rotate to a selected position to redirect the laser beam from the optical path onto one or more selected optical fibers of a laser catheter, wherein a distal end of the laser catheter irradiates an endovascular structure.

Abstract: A watch includes a control member, for example a crown or a head of a push-piece, which is mounted in a resilient manner on the outer end of an elongated element projecting outside the middle, such that a user can tilt in a self-reverting manner the control member in two dimensions orthogonal and perpendicular to the central axis of the elongated element. At least one proximity sensor is incorporated into the middle of the watch, in a location allowing this proximity sensor to produce an electric signal that represents the tilting of the control member about an axis that is perpendicular to the central axis. A processor generates at least one instruction on the basis of the electric signal provided by at least one proximity sensor, for example to allow the user to browse a menu or a calendar displayed on a digital screen.

Abstract: The present invention provides an elevator encoder diagnostic system and an elevator encoder diagnostic method by which input and output ports are kept from being occupied, functional restriction is suppressed, and abnormalities and malfunctions occurring in encoders provided in a dual-system can be detected. The elevator encoder diagnostic system according to the present invention includes a first encoder 16a and a second encoder 16b that are provided on a rotary portion of the elevator, a first diagnostic unit 21a connected to the first encoder, and a second diagnostic unit 21b connected to the second encoder, a first determination unit 23a and a second determination unit 23b that detect differences between encoder rotation amounts of the respective encoder systems and rotation detection signals of the other encoder systems, and, if a difference therebetween exceeds a predetermined threshold, determines that an abnormality has occurred.

Abstract: A measuring instrument includes a plurality of first readers that optically read a plurality of patterns from a measure having a color pattern including the plurality of patterns arranged at a regular interval in a length direction, the plurality of first readers being arranged at the regular interval in the length direction, a converter that converts the plurality of patterns read by the plurality of first readers into a value of an N-ary number (N is 3 or more), and a calculator that calculates a scale value of the measure based on data that defines a relationship between the value of the N-ary number and the scale value of the measure.

Abstract: A rotary angle sensor for an electric power assisted steering system of a motor vehicle, wherein the rotary angle sensor comprises an optical sensor unit with a light source, optical components and a photodetector and a disc with an optical pattern, wherein the optical sensor unit and the disc are configured to rotate relative to each other around a rotary axis, and wherein the optical sensor unit is configured such that light reflected from the optical pattern is measured by the photodetector, wherein the optical pattern comprises steps and spaces separating the steps, such that light reflected by steps and spaces destructively interferes leading to an intensity modulation of the reflected light according to an optical pattern which encodes a binary type code for the rotary angle of the disc.

Abstract: A diagnosing method for an abnormal cable connection of an incremental encoder includes: receiving a first-set of differential signals including one of signals A/? and one of signals B/B and a second-set of differential signals including one of signals A/? and one of signals B/B from the incremental encoder by two encoder modules; calculating a first signal-information group and a second signal-information group according to the first-set and second-set of differential signals; calculating a first parameter-information group and a second parameter-information group based on the first and second signal-information groups; determining whether a first signal direction is consistent with a second signal direction according to the first and second parameter-information groups; calculating a position-feedback control parameter for a motor according to a signal-information group corresponding to a normal set of differential signals when the first signal direction is determined to be inconsistent with the second sign

Abstract: A fixing structure for fixing a reflector and a device for detecting a display brightness are provided. The fixing structure is configured to fix a reflector to a photosensitive detecting assembly; and the fixing structure includes at least one clamping unit configured to clamp and fix the reflector. Each clamping unit includes: a first support, including a first clamping arm configured to support a first surface of the reflector; and a second support, including a second clamping arm configured to press on a second surface of the reflector facing away from the first surface.

Abstract: An optical apparatus includes a holding frame configured to hold an optical element and including a rack, and a driver configured to drive the holding frame. The driver includes a worm rotated by the actuator, a worm wheel configured to form a worm gear together with the worm, and a pinion configured to rotate with a rotation of the worm wheel and engaged with the rack.

Abstract: An optical encoder includes first, second, and third light receiving elements (A, B, C) that are sequentially disposed and adjacent to each other; and a detection signal generation unit (50) that outputs a detection trigger (Ts) when an output level of the second light receiving element (B) that receives incident light after the first light receiving element (A) is higher than an output level of the first light receiving element A, and outputs a non-detection trigger (Te) when an output level of the third light receiving element (C) that receives incident light after the second light receiving element (B) is higher than the output level of the second light receiving element (B).

Abstract: A position encoder includes a carrier adapted to move with respect to a first sensor and a second sensor of a position encoder. The carrier also includes encoding elements situated on the carrier to interact with the first sensor. A first limit indicator is situated at a first location on the carrier to interact with the second sensor at a first position of the carrier corresponding to a first limit of the position encoder, and a second limit indicator is situated at a second location on the carrier to interact with the second sensor at a second position of the carrier corresponding to a second limit of the position encoder.

Abstract: An encoder comprises first and second sensors which reads first and second tracks, the first and second sensors being arranged in a radial direction to face each other, and a processor which generates a first position signal based on first and second periodic signals based on a signal obtained by reading the first and second tracks by the first sensor, and generates a second position signal based on third and fourth periodic signals based on a signal obtained by reading the first and second tracks by the second sensor, wherein the processor generates an absolute position signal indicating an absolute position of at least one of the scale, the first sensor, or the second sensor based on the first and second position signals and the first and third periodic signals.

Abstract: A flowmeter having a seal structure for preventing an inner case structure from becoming complicated and making it possible to easily assemble an inner case with an outer case even if an inflow port has a large diameter. A seal member including a pair of sheet members each having a circular opening provided in a central part and a protruding ring formed along the outer peripheral edge of the opening in a protruding shape that projects outward is inserted between the inner peripheral surface of a body case of an outer case and the outer peripheral surface of an inner case. The protruding rings of the seal member are pressed by the inner peripheral surface of the body case of the outer case, seal the space between the outer case body part and the inner case, and prevent the leakage of fluid flowing through a flowmeter.

Abstract: A scale includes: a substrate; scale gratings that are formed on a face of the substrate and has a plurality of metal gratings at a predetermined interval; and an inorganic transparent member that is provided between the plurality of metal gratings, wherein at least a surface of the face of the substrate is made of a metal, and wherein the scale gratings and the inorganic transparent member are exposed to atmosphere.

Abstract: An apparatus including a frame, an optical sensor connected to the frame, and an environment separation barrier. The frame is configured to be attached to a housing of a motor assembly proximate an aperture which extends through the housing. The optical sensor comprises a camera. The environment separation barrier is configured to be connected to the housing at the aperture, where the environment separation barrier is at least partially transparent and located relative to the camera to allow the camera to view an image inside the housing through the environment separation barrier and the aperture.

Abstract: A lens module with enhanced absorption of stray light includes a sensor and a mounting bracket. The sensor includes a photosensitive area and a non-photosensitive area arranged surrounding the photosensitive area. The sensor is received in the mounting bracket and a window is defined in the mounting bracket. An annular flange extends from an inner wall of the window towards a center axis of the window. The annular flange includes a reflecting surface facing away from the inner wall of the window and tilted towards the sensor. The photosensitive area is exposed in a through hole of the annular flange. Diffusing reflection structures are formed on the reflecting surface and are configured to diffuse light incident on the non-photosensitive area away from the photosensitive area.

Abstract: The invention relates to a system having a coder with a magnetic track that exhibits an alternation of North and South magnetic poles separated by i Archimedean spiral transitions. The invention also includes a rotation sensor able to detect the periodic magnetic field emitted by the coder using several sensitive elements, the sensitive elements being distributed angularly along the magnetic track while forming between at least two sensitive elements an angle ? which is designed so that the signals delivered by the elements are in quadrature.

Abstract: A rotation angle detection device that is capable of detecting an absolute rotation position with a high accuracy without an error. A rotation detection target rotates together an operatable rotation member and has an outer scale and an inner scale. Two rotation detection elements are arranged at opposite positions across the rotation axis in the radial direction so as to respectively irradiate the outer and the inner scales with light beams and output signals corresponding to reflected components. A control unit calculates a rotation angle of the rotation detection target using the signals. The outer and inner scales are so formed that a signal output from one of the two rotation detection elements increases and the signal output from the other decreases when the rotation member is rotated.

Abstract: The disclosure relates to a method for operating a rotational speed sensor of a motor vehicle with a signal encoder ring having a plurality of magnet elements arranged uniformly over its circumference with alternating orientation, and with a signal receiver having at least two sensor elements arranged uniformly apart from one another for sensing magnetic fields of the magnets. Information bits are generated based on magnetic field strengths detected by the sensor elements and made available as a rotational speed information signal. At a low rotational speed, an additional rotational speed information signal is generated and added to the rotational speed information signal. The additional signal comprises additional rotational speed pulses inserted between two normal rotational speed pulses. As a result, a plurality of rotational speed pulses are available per period of the encoder ring and a higher resolution of determination of the speed becomes possible.

Abstract: A coded mask apparatus is provided for gamma rays. The apparatus uses nested masks, at least one of which rotates relative to the other.

Abstract: A fan is configured to generate an air flow by rotating together with a rotation shaft. The fan includes multiple blades arranged radially about a central axis of the rotation shaft and a boss portion that connects the blades to the rotation shaft. The boss portion has an end face portion located on one end side of the rotation shaft. The end face portion has an annular region concentric with the central axis of the rotation shaft. One part of the annular region in a circumferential direction has an optical refractive index different from an optical refractive index of another part of the annular region in the circumferential direction.

Abstract: A gas meter (100) and like metering systems that are configured for use underwater. The gas meter may embody a positive displacement rotary gas meter having a meter body with impellers that counter-rotate in response to material flow. The gas meter can also comprise an index unit having an electronics assembly to generate a value that equates rotation of impellers with a parameter of the material flow. The gas meter can further comprise a connective interface having a first part and a second part, one each disposed on the meter unit and the index unit, respectively, the first part and the second part coupling with one another to provide data to the electronics assembly, the data corresponding with operating conditions on the meter unit and rotation of the impellers. In one example, the first part and the second part are configured so that the meter unit and the index unit are operable underwater to generate the value.

Abstract: A sensor configured to detect displacement of a rotation angle of a shaft due to a rotation or a turn of the shaft, the sensor includes: a bearing rotatably supporting the shaft; and a housing including a bearing hole to which the bearing is fixed. The shaft and an inner circumferential surface of the bearing are fixed to each other by an adhesive agent, and an outer circumferential surface of the bearing and an inner circumferential surface of the bearing hole of the housing are fixed to each other by an adhesive agent.

Abstract: System for measuring the position of a mechanical member, which comprises an optical detection system and a positioning track arranged on two mechanical members of a mechanical device. The positioning track is provided with a succession of multiple sectors, each of which comprises a first delimitation section and a second delimitation section spaced from each other, and a first identification section and a second identification section which are provided with a different optical contrast with respect to the first delimitation section and to the second delimitation section. In each sector, the first identification section is delimited between the first delimitation section and the second delimitation section. In addition, the length of the identification sections of each sector is different from the length of the identification sections of each other sector of the succession, so as to unequivocally identify the corresponding sector.

Abstract: An optical encoder configuration comprises a cylindrical or planar rotary scale including yawed grating bars, an illumination source, a structured illumination generating arrangement (SIGA) and a detector arrangement including a photodetector. The SIGA is configured to input source light to a first illumination region on the rotary scale which diffracts light to a beam deflector configuration which transmits the diffracted light in a form that provides a particular fringe pattern proximate to a second illumination region on the scale. The scale filters and outputs that light to form a detector fringe pattern of intensity bands that are long along the rotary measuring direction and relatively narrow and periodic along a detected fringe motion direction (DFMD) transverse to the rotary measuring direction. The photodetector is configured to detect a position of the intensity bands as a function of rotary scale displacement and provide corresponding displacement or position signals.

Abstract: [Problem] Provided is an infusion pump in which a forward rotation and a reverse rotation of a rotor of a drive motor can be detected so as to be able to safely deliver drug to a patient. An infusion pump 1 includes a drive motor 61, a liquid delivering drive unit 60 that delivers drug inside an infusion tube by Dressing an infusion tube 200 on account of a rotor of the drive motor 61 in forward rotation, a rotational direction detection device 700 that generates detection information 780 regarding a rotational direction for judging whether the rotor of the drive motor 61 is in the forward rotation or reverse rotation, and a control unit 100 that judges whether a rotor 161A of the drive motor 61 is in the forward rotation or the reverse rotation based on the detection information 780 regarding the rotational direction obtained from the rotational direction detection device 700.

Abstract: One embodiment relates to a proximity sensor, a camera module comprising same, and a mobile terminal comprising same and comprises: a housing; a substrate disposed inside the housing; a sound output unit mounted on the substrate; a display unit disposed on the upper side of the housing; a camera module comprising a proximity sensor, which comprises a light-emitting unit and a light-receiving unit and detects the proximity of a user to the display unit at a predetermined distance by having the light-emitting unit and the light-receiving unit disposed at either side of the sound output unit, and a control unit for receiving the amount of light emitted by the light-emitting unit and the amount of light received by the light-receiving unit as inputs from the proximity sensor so as to operate the display unit; and a cover unit disposed on the display unit and provided over the sound output unit and the proximity sensor.

Abstract: A sensor for position determination of a drive system comprising: a magnetic sensor adapted to determine the rotational position of a magnet linked to the drive system; at least one Hall sensor to determine rotational movement and direction of rotation of the magnet; a microcontroller unit for evaluating data of the magnetic sensor and of the Hall sensor; and a rechargeable battery connected to a power supply of the sensor and that represents an alternative power supply, wherein, on a failure of the power supply, the sensor is adapted only to supply the Hall sensor and the microcontroller unit with energy from the rechargeable battery when the Hall sensor does not detect any rotational movement of the magnet and to supply at least one further component of the sensor with energy from the rechargeable battery when the Hall sensor detects a rotational movement of the magnet.

Abstract: A device for determining the attitude or variation in attitude of a satellite fitted with an attitude control system comprising at least one inertial actuator. The inertial actuator comprises a rotary element mounted to rotate about an axis of rotation. The rotation of the rotary element is controlled to generate a torque to control controlling the attitude of the satellite. The angular sensor of the device measures the angular rotation of the rotary element about its axis of rotation. The computation unit determines the attitude or variation in attitude of the satellite induced by the rotation of the rotary element as a function of the measurements of angular rotation of the rotary element by the angular sensor. A satellite carrying such a device and a method for determining the attitude or variation in attitude.

Abstract: An encoder includes a scale, a detector, and a processor. The processor executes a second process while executing a first process, calculates a first relative position of one of the scale and the detector to the other of the scale and the detector when a calculation of a relative position between them starts, and then calculates a second relative position of the one to the other based on a relative displacement amount between them and the first relative position.

Abstract: A sheet feeder includes a roller, a reflector, a sensor, and a rotating speed detector. The reflector is integrally attached to the roller, the reflector including first reflecting surfaces and second reflecting surfaces arranged alternately along a circumference direction of the roller. The sensor includes a light emitter and a light receiver. The rotating speed detector is configured to detect a rotating speed of the roller based on a result of the detection by the sensor. Each of the first reflecting surfaces reflects the inspection light at a first reflection ratio, and provides a first reflection light path along which the inspection light is directed to the light receiver. Each of the second reflecting surfaces reflects the inspection light at a second reflection ratio smaller than the first reflection ratio, and provides a second reflection light path along which the inspection light is directed outside the light receiver.

Abstract: A light source in a rotary optical encoder can illuminate a pattern on a rotatable shaft and an optical sensor can detect either the light that is reflected or transmitted based on the pattern. A sampling rate of the optical sensor is dynamically adjusted based on a rotational speed of the rotatable shaft. A pulse rate of the light source may also be dynamically adjusted based on the sampling rate of the optical sensor.

Abstract: A position detection apparatus (100) includes a scale (20) including a reference position grating (22), a detector (10), a detection grating (19), and a signal processor (10), the signal processor acquires a relative reference position between the scale and the detector by using a light intensity distribution of a divergent light beam obtained via the reference position grating and the detection grating, the detection grating has a first spatial frequency that is offset by a predetermined frequency offset amount with respect to a local spatial frequency of an interference image from the reference position grating, the detection grating is provided in an optical path between the scale and a light receiver of the detector, and the light receiver detects a component of a second spatial frequency that is lower than the first spatial frequency in the light intensity distribution transmitting through the detection grating.

Abstract: In general, a smart door alarm and locking mechanism and methods for use thereof are provided for maintaining security while providing ease of access to a fuel dispenser. In an exemplary embodiment, the methods and devices are used in fuel dispensing devices for providing fuel to a vehicle. However, the methods and devices can be utilized in any device having a payment system where security and access are both required. In some embodiments, the described methods and systems include a door alarm and door lock kit that allow unlocking one or more doors in a housing of a fuel dispenser and simultaneously disabling or de-activating respective door alarm sensor(s). In a similar manner, the door can be locked and the door alarm sensor activated or re-activated substantially simultaneously.

Abstract: A system for determining the absolute position of a first object with respect to a second object includes a scalar element attached to the first object and a measuring device attached to the second object. The scalar element comprises a series of coded regions. The coded region represents a number designating a position along an axis of the scalar element. The measuring device includes a two-dimensional optical sensor array configured to capture an image of a portion of the scalar element. The system also includes a processor configured to receive the image and determine an absolute position of the first object with respect to the second object based on at least one coded region of the series of coded regions.

Abstract: A mouse includes the main body and the inertial roller module. The inertial roller module is installed in the main body. The inertial roller module includes a supporting bracket, a roller, a gear assembly and an encoding element. The roller is pivotally coupled to the supporting bracket. The gear assembly includes a first gear and a second gear. The first gear is connected with the roller. The first gear and the second gear are engaged with each other. The number of teeth in the first gear is larger than the number of teeth in the second gear. The encoding element is connected with the roller. Consequently, the time period of rotating the roller is increased.

Abstract: The present disclosure relates to an optical sensor module, an optical sensing accessory, and an optical sensing device. An optical sensor module comprises a light source, a photodetector, an electrode and a substrate. The light source is configured to convert electric power into radiant energy and emit light to an object surface. The photodetector is configured to receive the light from an object surface and convert radiant energy into electrical current or voltage. The electrode is configured to detect an external circuit formed by the contact with an object surface. An optical sensing accessory and an optical sensing device comprise the optical sensor module and other electronic modules to have further applications.

Abstract: A rotating magnetic field Hall apparatus is provided and includes first and second magnets disposed in a master-slave configuration, a device-under-test (DUT) stage interposable between the first and second magnets on which a DUT is disposable in first or second orientations for Hall measurement or photoelectromagnetic (PEM) testing, respectively, controllers disposed to center the DUT stage between the first and second magnets and orthogonal magnetic field sensors disposed aside lateral sides of the first magnet to facilitate positional initialization of the first and second magnets and to generate in-phase and out-of-phase reference signals for phase-sensitive or lock-in Hall signal detection. The system also includes software system to perform signal processing to yield the final Hall signal.

Abstract: An optical position-measuring device includes a measuring graduation having a measuring graduation period and a scanner movable relative to the measuring graduation. The scanner projects a light pattern having alternating bright and dark regions with a light pattern period onto the measuring graduation. The measuring graduation period differs from the light pattern period such that interaction of the light pattern with the measuring graduation produces a vernier pattern having bright regions and dark regions. The measuring graduation is a phase grating having a line-to-space ratio different from 1:1 and a phase shift between lines and spaces selected such that the zeroth diffraction order is suppressed. The position-measuring device is configured such that, at a position at which the zeroth diffraction order of a bright region is suppressed, a higher diffraction order is deflected and impinges on a detector array in a bright region of the vernier pattern.

Abstract: An origin detector includes detecting element groups having a first to a fourth detector, is configured so that a first signal sensitivity of the detectors of a center is larger than a second signal sensitivity of the detectors of a periphery, reads an origin detecting pattern including an origin pattern having a length along a detecting direction of a part having a physical characteristic different from an origin peripheral part larger than a length along the detecting direction of each detecting element group, and outputs a first signal using the first and third detectors, and a second signal using the second and fourth detectors. A processor acquires a third signal from the first signal and a first threshold, and a fourth signal from the second signal and a second threshold, and outputs a fifth signal using the third and fourth signals as an origin signal.

Abstract: An encoder includes an encoder circuit including first and second switches, a first resistor connected in series to the first switch, and a second resistor connected in series to the second switch, the encoder circuit defined by the first switch and the first resistor and the second switch and the second resistor being connected between a power supply voltage and a ground, and a control circuit connected between the first and second resistors and the power supply voltage to turn off power supply from the power supply voltage to the first resistor when the first switch is closed and to turn off power supply from the power supply voltage to the second resistor when the second switch is closed. The control circuit is connected to a first connection point between the first resistor and the first switch and to a second connection point between the second resistor and the second switch.

Abstract: There is provided an optical apparatus including a substrate, a light emitting device, a light sensitive device and a plurality of micro-lenses. The light emitting device is disposed on the substrate and adapted to provide a light beam. The light sensitive device is disposed on the substrate and adapted to receive a light beam reflected from an object, wherein the light sensitive device has a plurality of photosensitive units arranged in matrix. The micro-lenses are disposed above the light sensitive device and respectively opposite to the associated photosensitive units. There is further provided a light sensitive device with micro-lens and a manufacturing method thereof.

Abstract: An optical position encoder includes a scale having multiple tracks separated in a direction perpendicular to travel, the tracks including an incremental track and an absolute track, the scale interacting with an incident first light beam to generate a second light beam having components carrying respective optical patterns produced by the incremental track and absolute track respectively. The encoder further includes a set of optical detectors including at least first and second detector arrays of differing properties to detect the respective optical patterns produced by the incremental track and absolute track respectively, each of the first and second detector arrays spanning multiple tracks of the scale and configured to respond to a respective detector-specific component of the second light beam more strongly than to another component of the second beam specific to another of the detector arrays.

Abstract: An encoder able to maintain liquid-tightness over a long period of time. The encoder is provided with a housing unit holding component parts of the encoder. The housing unit is formed by a housing and a cover closing an opening part of the housing. At a boundary part of the housing and the cover, an O-ring is placed. The housing is formed with a guide groove at the outside in the radial direction from the O-ring and a discharge guide groove communicated with the guide groove and opening toward the outside in the radial direction. The cover is formed with a ring-shaped guide projection projecting out toward the guide groove at a position corresponding to the guide groove.

Abstract: An object of the present invention is to provide a photosensor unit with a structure which is simple and also does not cause decrease in detection accuracy. Provided is a photosensor unit including a light emitting element 1 and a light receiving element 2 housed in a unit case 3, and configured such that reflected light of detection light emitted from the light emitting element 1 to the outside of the unit case 3 is received with the light receiving element 2, the reflected light being reflected from the outside of the unit case 3. A plurality of the light emitting elements 1 are disposed around the light receiving element 2, and a passage space for the reflected light inside the unit case 3 is separated from a passage space for the detection light inside the unit case 3 by an appropriate partition 4.

Abstract: An encoder system includes a signal processing circuit including: (1) a first position data detection circuit that detects first position data representing positional displacement in rotation of an input shaft through first predetermined signal processing based on a first detection signal input from a first absolute position encoder; (2) a second position data detection circuit that detects second position data representing positional displacement in rotation of an output shaft through second predetermined signal processing based on a second detection signal input from a second absolute position encoder; (3) a position data combination circuit that combines the first and second position data to generate combined position data representing the number of rotations of the input shaft and the positional displacement within one rotation of the input shaft; and (4) a position data comparing and collating circuit that compares and collates the first and second position data.

Abstract: Embodiments described herein include an optoelectronic position measuring device that may include a code carrier, which carries an optically detectable position code, a radiation source for emitting optical radiation onto the code carrier, and a detection element having a multiplicity of light-sensitive reception regions for receiving at least part of the optical radiation, as a result of which a scanning signal dependent on the position code can be generated and a position of the code carrier relative to the detection element can thus be detected, wherein the measurement components are arranged in a fixed spatial relationship with respect to one another on a carrier element, the code carrier is movable with one degree of freedom, in particular rotationally or along an axis, and the code carrier and the carrier element are arranged at a fixed spatial distance with respect to one another.

Abstract: Apparatus are provided for infusion devices and related systems and operating methods. An exemplary system includes a motor, a sensing arrangement coupled to the motor to provide output indicative of a detected characteristic of the motor when the sensing arrangement is enabled, and a module coupled to the sensing arrangement to periodically enable the sensing arrangement while the motor is idle and detect potential unintended motion of the motor based on the output from the sensing arrangement while periodically enabling the sensing arrangement. In some embodiments, the motor includes a rotor configured such that its rotation provides translational displacement of a plunger in a fluid reservoir, and the sensing arrangement includes one or more sensors configured to provide output indicative of a detected magnetic field of the rotor magnet.