399 results about "Rotation sensor" patented technology

An electronic watch includes a housing and a crown assembly including a rotatable actuation member. The rotatable actuation member includes a knob external to the housing and configured to receive a rotational input and a shaft assembly coupled to the knob and positioned at least partially within the housing, the shaft assembly defining a sensing surface configured to rotate in response to the rotational input. The electronic watch further includes an optical sensing system configured to detect the rotational input, the detecting including directing light onto the sensing surface, receiving reflected light from the sensing surface, and producing a signal corresponding to a rotational motion of the sensing surface, the signal based at least in part on an interference between the light directed onto the sensing surface and the reflected light.

An angle-detecting door handle assembly comprises: a handle member; a four-bar link configured to move the handle member between at least retracted and presented positions relative to a door surface; a motor configured to actuate the four-bar link; a rotary sensor configured to detect an angle of the four-bar link throughout actuation and generate a signal corresponding to the detected angle; and a controller configured to control the motor based on the signal from the rotary sensor.

An electronic watch may include a housing and a crown configured to receive a rotational input. The crown may include a knob external to the housing, a rotor coupled to the knob and configured to rotate in response to the rotational input, the rotor defining a recess extending about a circumference of the rotor, and a coating positioned in the recess and configured to reflect at least a portion of light incident on the coating. The electronic watch may further include an optical sensing system configured to detect the rotational input using the reflected portion of the light.

A work vehicle includes a boom coupled to a machine body, an arm coupled to the boom, a bucket coupled to the arm and including an edge portion to function as a leading edge when the bucket excavates earth, a rotation sensor to measure rotation of a to-be-measured object which is at least one of the boom, the arm, or the bucket, and a controller configured or programmed to control rotation of the to-be-measured object. The controller is configured or programmed to control rotation of the to-be-measured object based on an output value obtained by applying a correction function directly or indirectly to a difference between a target angular velocity for rotation of the to-be-measured object and an actual angular velocity of the to-be-measured object derived based on a measurement result from the rotation sensor, the correction function being based on the actual angular velocity.

To shorten the time required for processing to specify a fire source position by using a sensor in a water discharge device equipped with the sensor that rotates in two axial directions.SOLUTION: A water discharge device 30 includes a sensor part 33, a water discharge nozzle 34, a rotation driving part 35, and an elevation driving part 36. The sensor part 33 includes an infrared camera 331 and an infrared sensor 332 which are used to specify a fire source position within a monitoring area. The water discharge nozzle 34 rotates in the rotation direction around a rotation axis and can discharge water towards the fire source position across a range in the elevation direction. The rotation driving part 35 rotates the sensor part 33 in the rotation direction around the rotation axis along with the water discharge nozzle 34. The elevation driving part 36 rotates the sensor part 33 in the elevation direction around the elevation axis independently of the water discharge nozzle 34.SELECTED DRAWING: Figure 2

A coal bunker modeling method based on three-dimensional positioning and two-dimensional mapping. To improve the efficiency of bunker cleaning at the dock, sensors are used to obtain the internal information of the coal bunker. The three-dimensional lidar information and inertial measurement unit are used to perform real-time positioning on the push rake used for bunker cleaning operations. A fixed rotation sensor composed of a single-line radar and a DC servo motor is used to sense the coal bunker environment. The front-end positioning and serial port rotation angle are used as the basis for single-frame matching to obtain a complete point cloud inside the coal bunker. The superimposed point clouds are subjected to semantic fusion segmentation to classify the coal material point clouds, complete the outer boundary of the point clouds, fill the internal void point clouds, and calculate the volume of the coal material based on the three-dimensional grid point cloud of the coal material. The calculated information is fed back into the control logic of the upper computer to improve the efficiency of the entire push rake bunker cleaning operation.

The invention belongs to the technical field of coaxiality detection, and provides a motor shaft coaxiality detection device and method based on a contact displacement sensor. The detection device adopts a modular design, and is integrated with a shaft supporting and positioning system which can be magnetically attracted and locked in a sliding manner, a rotation driving system with magnetic force assistance, and a sensing measurement system with adjustable angle and height. During detection, a motor shaft to be detected is placed on the supporting bearing, and the measuring heads of the two contact type displacement sensors are in contact with the surfaces of different shaft sections of the motor shaft respectively; the driving system drives the shaft to rotate, and the sensor collects radial run-out data; and the data processing system adopts a two-channel difference algorithm to calculate the range of the radial deviation of the two measuring points in a circle of rotation, and the range is used as a coaxiality error. According to the invention, rapid, high-precision and low-cost detection of the coaxiality of the motor shaft is realized, the method is especially suitable for batch automatic application in a production field, and the method has the outstanding advantages of simple operation, strong adaptability and high efficiency.

In a processing machine, a drive part makes a movable part move in a first direction. A position sensor detects the position of the movable part in the first direction. The rotation sensor detects the rotation of the spindle. At the time of processing of a workpiece by a tool in a state where the spindle is rotating, a control part controls the drive part based on the detection value of the position sensor so as to the movable part move in the first direction to a relative position set with respect to a predetermined reference position. Further, the control part acquires, as the reference position, a position detected by the position sensor at the time of detection of cessation of rotation of the spindle by the rotation sensor in a situation where the movable part moves in the first direction in a state where the spindle is rotating, and the tool and the workpiece contact in the first direction.

The system for automating well construction operations includes a plurality of sensors, such as a fingerboard latch position sensor for providing position of a fingerboard latch, a stick-up height sensor for determining a height of a portion of a tubular section extending from a well center, a pipe handler rotation sensor for detecting a position of a pipe handler, a bell guide clearance sensor for measuring a distance between a bell guide and a tool joint, a link tilt position sensor for measuring an angle of a bail with respect to a top drive, an elevator latch status sensor for detecting whether an elevator latch is open or closed, and a power slips sensor for detecting whether a power slips is open or closed. Further, the system includes a controller in communication with the plurality of sensors and configured to command one or more equipment based on inputs from the sensors.

The utility model relates to the technical field of wheel speed sensors, in particular to an inspection device for a wheel speed sensor, which comprises an inspection box, a sealing box is fixedly mounted at the top end of the inspection box, shells are fixedly mounted on two sides in the sealing box, a plurality of electric heating tubes are sequentially arranged in the shells from top to bottom, and the electric heating tubes are connected with the sealing box. The two ends of the right bottom of the sealing box communicate with a cold water inlet and a cold water outlet correspondingly. The sealing box, the electric heating pipe, the coiled pipe and the fan are matched for use, the fan and the electric heating pipe are started, the electric heating pipe is started to heat air in the sealing box, then high-temperature air is blown into the detection box through the fan to simulate a high-temperature environment, and then detection is carried out according to the mode. Cold water is fed into the coiled pipe through the external circulating pump, then cold air is fed into the detection box through the fan, and by simulating a high-temperature or low-temperature environment, the detection accuracy of the sensor can be improved, and errors are reduced.

A machine includes a rotational sensor configured to sense rotation of an upper frame of the machine relative to a lower frame of the machine. The machine also includes a three-dimensional position sensor spaced from an axis of rotation of the upper frame relative to the lower frame. The machine can also include a number of additional sensors including sensors to detect track movement, imaging sensors, ranging sensors, IMUs, linear displacement sensors and / or the like. A computing system receives the various inputs from the sensors and fuses the data to determine state information for the machine.

A gas turbine engine includes a fan drive turbine, a fan rotor, and a gear reduction driven by the fan drive turbine and, in turn, to drive the fan rotor. A main oil supply system supplies oil to components within the gear reduction, and an auxiliary oil supply system. The auxiliary oil supply system includes a rotation sensor for sensing rotation of a component that will rotate with the fan rotor, a control, an auxiliary oil pump, and a main supply sensor for sensing operation of the main oil supply system. The control is programmed to supply oil from the auxiliary oil pump to the gear reduction when the rotation sensor senses the component is rotating. A determination is made that inadequate oil is being supplied from the main oil supply system based upon information from the main supply sensor.

A sensor assembly includes a housing defining a chamber. A sensor unit is supported by the housing and extends vertically upward along an axis from the housing. The sensor unit includes a base and a sensor housing mounted to the base and rotatable relative to the base about the axis. The sensor unit includes a sensor. The sensor housing extends circumferentially around the sensor and defines a sensor chamber therebetween. A blower box is supported by the housing in the chamber. The blower box defines a blower chamber in fluid communication with the sensor chamber. A blower is disposed in the blower box.

The invention belongs to the field of mining drilling machines, and relates to an automatic drill rod conveying system with a drill rod detection function, which comprises a main manipulator, an auxiliary manipulator, a transfer mechanism and a drill rod conveying sensor group, the main manipulator comprises a main rotating joint, a main telescopic joint and a main clamping jaw assembly; the auxiliary manipulator is arranged on the auxiliary sliding rail of the drill rod box and comprises a lifting joint, an auxiliary rotating joint, an auxiliary telescopic joint and an auxiliary clamping jaw which are connected in sequence; the transfer mechanism comprises a drill rod transfer device, a rack and a rotary platform, and the drill rod transfer device is arranged between the rack and the rotary platform through an asynchronous rotating device; the drill rod conveying sensor group comprises a detection sensor mounted on the secondary manipulator; the judgment sensor is mounted on the drill rod transporter; and the rotation sensor is arranged on the main manipulator. Efficient automation from sensing to control in the drill rod conveying process is achieved, and powerful guarantee is provided for safety and efficiency in the complex operation environment.

To provide a motor-operated valve that can facilitate a work of assembling a rotation sensor and reduce cost of equipment.SOLUTION: A motor-operated valve 100 includes: a fitting part 111 to which a rotation sensor 101 including a sensor body 103 and a lead wire 102 is fitted; and an input-output wiring part 130 which is at least partially disposed in the fitting part 111 and to which the lead wire 102 is connected. The wiring part 130 includes a nipping part 131 for nipping the lead wire 102.SELECTED DRAWING: Figure 4

The utility model discloses a refrigeration equipment refrigeration effect detection device, comprising a support rod (4), one end of the support rod (4) is fixedly connected with a support block (7), the support block (7) is provided with a temperature detection element, at least one side of the support block (7) is rotatably connected with a rotating plate (10), the rotating plate (10) is provided with a plurality of through grooves, each through groove is rotatably provided with a fan blade for sensing wind power, and the fan blade is provided with a temperature detection element. Fan blade shafts of the fan blades are respectively provided with a rotation sensor. According to the utility model, the defect that the refrigeration temperature is detected by manually holding a thermometer is overcome, the air outlet force of the refrigeration equipment can be synchronously detected as required, and the practicability is good.

A rotation sensor system includes a rotatable target object configured to rotate about a rotational axis in a rotation direction; a first millimeter-wave (mm-wave) metamaterial track coupled to the rotatable target object, where the first mm-wave metamaterial track is arranged around the rotational axis, and where the first mm-wave metamaterial track includes a first array of elementary structures having at least one first characteristic that changes around a perimeter of the first mm-wave metamaterial track; at least one transmitter configured to transmit a first electro-magnetic transmit signal towards the first mm-wave metamaterial track, where the first mm-wave metamaterial track converts the first electro-magnetic transmit signal into a first electro-magnetic receive signal; at least one receiver configured to receive the first electro-magnetic receive signal; and at least one processor configured to determine a rotational parameter of the rotatable target object based on the received first electro-magnetic receive signal.

Linear control system for flight simulation and other applications. The system employs a moveable handle and handle shaft configured to receive manual user input for linear in-and-out motion over at least a range of several inches and rotation back and forth about the handle-shaft axis. Various rolling contact mechanisms employing a compliant material of appropriate durometer are used to manage friction. Linear motion is detected using a motion-reducing Hall-effect sensor and magnet device, while rotary motion is detected using a different rotary sensor. The device has at least one onboard processor, which can receive, process, and output various sensor measurements to an outside computerized device (such as a computer running a flight simulation program). The onboard processor can also receive actuator commands from the outside computerized device and use them to control onboard linear and rotary actuators to provide haptic feedback to the user.

There is provided methods and apparatus of encoding / decoding a point cloud captured by a set of sensors. The encoding method obtains a list of ordered points of the point cloud by ordering the points according to a lexicographic order based on azimuthal angles and sensor indices associated with points of the point cloud; obtains a next point following a current point in the list of ordered points and having an order index different of an order index of the current point, and obtains a number of duplicated points equals to a number of points following the current point that have an order index equals to the order index of the current point; encodes the number of duplicated points and encodes an order index difference representing a difference between the order index of the next point and the order index of the current point.

The utility model discloses a Hall current sensor, which comprises a sensor main body, a connecting shaft is vertically fixed at the bottom of the sensor main body, a sensor supporting seat is arranged at the bottom of the connecting shaft, a spring is sleeved on the connecting shaft, and the spring is arranged between the sensor main body and the sensor supporting seat. A bevel gear is fixed to the lower portion of the connecting shaft, and a meshing groove matched with the bevel gear is formed in the middle of the bottom of the sensor supporting base. According to the utility model, when the sensor main body needs to be rotated, the sensor main body needs to be pressed down firstly, so that the bevel gear on the connecting shaft is separated from the bottom of the meshing groove, and when the rotation is completed and the sensor main body is loosened, the spring pushes the connecting shaft to slide upwards, so that the bevel gear enters the meshing groove again, and then the locking is completed. According to the utility model, the angle adjustment of the sensor main body is simpler and more effective.

An electric work machine in one aspect of the present disclosure includes an output shaft, a brushless DC motor, a first positive-side conduction path, a first negative-side conduction path, a first switch device, a manual switch, a rotation sensor, and a controller. The first switch device is on the first positive-side conduction path or the first negative-side conduction path. The controller controls a magnitude of a conduction angle based on an actual rotational frequency and a target rotational frequency of the brushless DC motor.

A power machine or excavator includes a swivel assembly coupling the upper frame portion to the lower frame portion, while providing accurate slew position measurement using a swivel sensor which is positioned to reduce measurement errors over a thermal range of operation of the power machine. The swivel assembly includes a swivel barrel configured to be attached to the lower frame portion of the power machine, and a swivel spool configured to be attached to the upper frame portion. The swivel sensor is positioned and configured to provide a sensor output indicative of a rotational position of the upper frame portion relative to the lower frame portion.

The invention relates to a rotation sensor (4) for a steering system (1) of a motor vehicle, comprising a magnet element (41) which can be mounted on a steering shaft (10) and which can be rotated about an axis (L), and two stator elements (42a, 42b) which are fixedly arranged coaxially with respect to the magnet element and are axially spaced apart from each other, the stator elements (42a, 42b) are operatively connected to at least one sensor element (6) via two flux conductors (5a, 5b), the flux conductors (5a, 5b) each having a converging section (51a, 51b) connected to the stator elements (42a, 42b), a coupling section (58a, 58b) connected to the converging section and a compensation section (52a, 52b), and the sensor element (6) is arranged between the two coupling sections (58a, 58b) which are axially opposite one another. In order to be able to achieve an optimized construction and to reduce the production effort, the invention proposes that the compensation sections (52a, 52b) of the two flux conductors (5a, 5b) are arranged in the axial direction without overlapping.

The invention belongs to the field of mining drilling machines, and relates to a drill rod conveying system suitable for full-section drilling and a control method thereof.The system comprises a main mechanical arm, an auxiliary mechanical arm, a transfer mechanism, a drill rod conveying sensor set and a rotation positioning sensor set; the main manipulator comprises a main rotating joint, a main telescopic joint and a main clamping jaw assembly; the auxiliary manipulator comprises a lifting joint, an auxiliary rotating joint, an auxiliary telescopic joint and an auxiliary clamping jaw which are connected in sequence; the transfer mechanism comprises a drill rod transfer device, a rack and a rotary platform, and the drill rod transfer device is arranged between the rack and the rotary platform through an asynchronous rotating device; the drill rod conveying sensor group comprises a detection sensor, a judgment sensor and a rotation sensor; and the rotary positioning sensor group comprises a transporter tilt angle sensor, a rack location sensor and a synchronous sensor. Efficient automation from sensing to control in the drill rod conveying process is achieved, and powerful guarantee is provided for safety and efficiency in the complex operation environment.

A system for preventing shifting between a plurality of gear ratios in a mechanical gearset. An operating sensor detecting rotation of a moving component in the mechanical gearset, a shift solenoid controlling shifting among the plurality of gear ratios, and a microcontroller communicatively coupled to the shift solenoid and the operating sensor that prevents activation of the shift solenoid when rotation is detected by the rotation sensor.

The present invention provides a lifting device with an improved ascending / descending body impact prevention function, the lifting device comprising a microcomputer which performs the functions of: storing a number of rotations count value of a rotation sensor when an ascending / descending body descends and touches the floor so that a lifting rope is in a non-loaded state or when a user sets a stop position; and reducing the rate of descent of the ascending / descending body before the ascending / descending body reaches the previously stored rotation amount count value during the next descent, thereby softening the impact when the ascending / descending body touches the floor.

The purpose of the present invention is to prevent contraction of the inner diameter surface of an inner ring even when a magnetic ring of a magnetic rotation sensor is connected to the outer peripheral portion of the inner ring of a rolling bearing, to enable the outer peripheral portion of the inner ring to be connected to the magnetic ring even when the width of the inner ring is small, and to improve the reusability of the magnetic ring when the inner ring is replaced. In order to achieve the above, the present invention is provided with a hook member (20) formed in a ring shape from a resin. An outer peripheral groove (12a) extending in the circumferential direction is formed in the outer peripheral portion (12) of the inner ring (3). The hook member (20) has a protrusion (25) that engages with an outer peripheral groove (12a) of the inner ring (3). The core bar (18) is held by the hook member (20).

The invention discloses a method and a system for calculating a vibrating position of a mechanical vibrating machine, and the method comprises the steps: accurately measuring the three-dimensional coordinate of the vibrating position through the multi-source sensing data of a rotation sensor, a tilt angle sensor, a pull rope sensor, a laser sensor and the like in combination with a trigonometric function coordinate analysis algorithm and rotating coordinate system conversion; meanwhile, the vibrating depth and the coordinates of any point of the vibrating rod can be calculated. According to the invention, the three-dimensional coordinate of the vibrating position can be calculated in real time and with high precision.

This invention provides an unattended gas valve control actuator, comprising an inverted L-shaped housing. The upper part of the longitudinal compartment of the housing houses a clutch device, and the lower part houses a drive motor. The transverse compartment houses a bridge gear and a valve stem sleeve for driving the gas valve stem. This invention adopts a side-drive structure, reducing the overall height of the actuator and making it easier to install in confined valve wells. The clutch mechanism allows for easy switching to manual operation with just a push-pull lever, enabling more convenient handling of system failures or other emergencies. The invention includes a rotation sensor that measures the number of rotations of the bridge gear to determine the valve's opening degree, ensuring precise valve control. Using a hydraulic motor as the drive motor eliminates the need for high-voltage, high-current input, preventing electrical sparks during operation and eliminating the risk of explosion, thus improving safety.

The present disclosure therefore provides a magnetic sensing system that implements a magnetic multi-turn sensor and an absolute angle sensor in conjunction with a rotating magnet for counting revolutions and providing coarse angular position information, together with an incremental sensor system that uses a rotating disk having a track formed from an Archimedes spiral structure, thereby providing a higher accuracy angle measurement. A magnetic sensing device comprising a multi-turn sensor and an angle sensor is disposed in proximity to a magnet mounted on the end of a rotating shaft. The magnetic sensing device detects a rotating magnetic field to measure the number of revolutions and the absolute angle of the rotating shaft to a first level of resolution and accuracy. The rotating disk is also coupled to the rotating shaft and is formed from a magnetic material. Tracks are then formed on the magnetic disk such that a magnetic incremental sensor detects the periodically changing magnetic field as the disk rotates with the shaft. Then, starting from the angle measurement provided by the magnetic sensing device, a signal output by the incremental sensor can be used to provide a higher resolution measurement of the angular position.