2784 results about "Rotary encoder" patented technology

An endoscope has a pannable camera at the distal end of its insertion shaft, the pannable camera assembly being pivotable to provide a range of a field of view that can be equal to or greater than 180 degrees. A terminal light emitting element may be mounted to the camera assembly in order to illuminate the immediate field of view of the camera sensor regardless of the rotational position of the camera assembly. A fluid-carrying conduit of the insertion section may also be used to house functional components, including the camera assembly, actuation cables, a communications cable connected to the camera sensor, and / or a fiberoptic cable providing light to the light emitting element. A distal section of the endoscope handle may be rotatable relative to a proximal hand-held section of the endoscope handle, a rotary encoder being provided to convert the rotational position of the insertion shaft relative to the handle into a signal for the purpose of image orientation correction by an electronic processor.

A portable coordinate measurement machine having three articulating arm transfer members can provide accurate measurements. The transfer members can be single tube assemblies. The transfer members can each be rotatably joined by relatively short articulating joint assemblies allowing relative rotation of adjacent transfer members about two degrees of freedom. Encoders can be used to measure the relative rotation about each of the degrees of freedom, and signals from the encoders can be digitized by processor boards positioned within the transfer members. Processor boards can be placed in tandem in the transfer members, and one or more of the processor boards can be mounted on a rotatable assembly. Slip rings can electrically couple all of the processor boards to allow for infinite rotatability of the articulating arm.

The invention provides a high-precision map generation system and a high-precision map generation method based on a high-definition ortho-photo map. The system comprises an image shooting module, a horizontal laser radar, a GPS (global positioning system) processing module, an inertial navigation module, a rotary encoder, an image and data preprocessing module and a geographical information processing module, wherein the vehicle-mounted image shooting module is used for acquiring a road image; the laser radar is used for scanning a barrier and acquiring geographical information data; the precision of GPS information is optimized; the ortho-photo map of the road image is acquired and then is rotated and sheared to generate corresponding geographical information file operation; a full ortho-photo map sequence and a corresponding geographical information file are combined and spliced to generate a base map of a global map; various types of geographical information data are marked on the base map of the map. According to the method and the system, a high-precision navigation map can be generated, and the data precision can reach centimeter level; the method and the system are extremely high in practical value on an advanced auxiliary driving system and an unmanned vehicle.

The invention provides a high-precision map data structure, ahigh-precision map data acquiringand processing system and a high-precision map data acquiringand processingmethod. The high-precision map data structure adopts a layering structure and comprises four layers of structures in total, wherein all layers of data are inter-related, i.e., the first layer is a road network; the second layer is a lane network and is related to roads of the first layer; the third layer is lane line information and simultaneously is related to roads of the second layer; and the fourth layer is special information data. The system comprises a panoramic image shooting and processing module, a GPS processing module, an inertial navigation module, a rotary encoder and a geographicinformation processing module. According to the invention, a panoramic camera is used for shooting panoramic images of the roads, simultaneously, GPS original data, inertial navigation device data, rotary encoder data are acquired, different perspectives of projection images of single panoramic image, corresponding GPS and vehicle course angle information are obtained by processing the data, and then geographicinformation data of roads is labeled according to the defined data structure, so that a high-precision map is obtained.

A human machine interface includes a capacitive touch screen having a capacitive sensor. The capacitive touch screen displays text characters and / or graphical information. A control device is rotatably coupled to a structure such that the control device is superimposed over the screen. The control device includes at least one electrically conductive element. The control device rotates about an axis substantially perpendicular to the screen such that the at least one electrically conductive element follows the rotation of the control device. The capacitive sensor senses a rotational position of the at least one electrically conductive element.

A multi-turn rotary encoder that includes a first code carrier connected with an input shaft, a scanning device that scans the first code carrier and generates an absolute position of the input shaft within one revolution, and a digital code word is present at an output of the scanning device and a second code carrier for measuring the number of revolutions of the input shaft. A reduction gear is arranged between and coupled to the first and second code carriers. The second code carrier includes a magnetic body with at least one north and south pole and a substrate with a spatial arrangement of sensor elements integrated therein, which are sensitive to magnetic fields, is associated with the magnetic body. An evaluation circuit integrated into the substrate, wherein scanning signals, which are phase-shifted with respect to each other, from the sensor elements are supplied, and that the evaluation circuit combines the scanning signals in such a way that a second digital code word is present serially or in parallel at an output of the evaluation circuit. A combination logical device, which is supplied with the first and second digital code words and which forms a resultant multi-digit code word therefrom.

A medical system for locating a catheter distal tip within a body using a plurality electrical position sensors and a magnetic position sensor in conjunction with an acceleration sensor or rotational encoder. The system locates the catheter by using signals from the acceleration sensor or rotational encoder and magnetic sensors to compensate for positioning errors associated with electric positioning sensors.

The invention discloses a metro tunnel fracture surface deformation detection system, belonging to the tunnel engineering monitoring technical field. The system comprises a fracture surface scanning device, a mileage positioning device, an electrical equipment control device, a power source, a track detection vehicle and a station data processing system, wherein, the fracture surface scanning device, the mileage positioning device and the electrical equipment control device are arranged on the track detection vehicle; the power source is respectively connected with the fracture surface scanning device, the mileage positioning device and the electrical equipment control device through a power source convertor to supply power for the fracture surface scanning device, the mileage positioning device and the electrical equipment control device; a PLC controller is arranged in the electrical equipment control device; a rotary coder in the mileage positioning device, a sensor in the fracture surface scanning device and a rotary table stepped driver are respectively connected with the PLC controller; the PLC controller is connected with a wireless communicator through a wireless communicator in the station data processing system. The whole detection system of the invention has high portable integration degree, automatic operation process, convenient operation, low specialty technical requirements, rapid operation speed, extremely-time section surface measuring and high measuring precision, and the system precision is less than 3mm.

The invention relates to a multiturn absolute rotary encoder based on a rotary transformer, which is characterized in that: a sensor is displaced by taking the rotary transformer as a shaft angle; a shaft angle decoding circuit can be formed by adopting DSP as a core processor; a sine wave which can be controlled by frequency and phase in the method that the circuit is synthesized by direct digital frequency for the numerical control of an oscillator; and the sine wave is directly taken as an excitation rotary transformer signal via a power amplifier and a filter circuit; the rotary transformer signal is transferred to A / D converter after being run through a matching circuit of electronic transformer; after sampling, digital filtering and digital signal processing, the sine and cosine value for the actual angle of two channels is generated; the angle error change is tracked dynamically by the PI algorithm; the mechanical displacement of the rotating object is converted into digital shaft angle position and speed. The multiturn absolute rotary encoder based on a rotary transformer has the advantages of high tracking speed, high conversion accuracy, high reliability, simple structure, sensitive movement, low environmental condition, strong anti-interference capability, high measuring accuracy and speed voltage output.

The disclosed detector comprises: a driver, a magnetic-leakage probe, a magnetic-leakage signal process device with a rotary coder, a power, an ultrasonic probe, and a ultrasonic signal processor with a roller carried a milometer all connected by gimbals in turn. This invention integrates both magnetic-leakage and ultrasound, realizes precise positioning to defect in pipeline, and can detect the defect and hidden danger all round.

A self-guided robot for traveling with a predetermined traveling pattern includes a gyro sensor for detecting an angle indicative of a traveling direction from a reference position, a left rotary encoder and a right rotary encoder for detecting a traveling distance from the reference position, left and right driving wheels for allowing a main body to move, and a left driving wheel motor and a right driving wheel motor for driving the left and right driving wheels for travel. A CPU calculates a deviation amount from a planned route on the basis of detection amounts from gyro sensor, left rotary encoder and right rotary encoder, and controls the driving of left driving wheel motor and right driving wheel motor on the basis of the calculated deviation amount.

A method of processing signals in a rotary encoder of the kind which comprises at least one annular track of encoding regions arranged as an alternating pattern of first encoding regions and second encoding regions, comprises providing a first detector at a first fixed position which is arranged to produce a first alternating output signal as the track of encoding regions rotates about its axis past the detector, the alternating signal comprising a series of transitions between a first state corresponding to the detector being aligned with a first encoding region and a second state corresponding to the detector being aligned with second encoding region;providing a second detector at a second fixed position which is arranged to produce a first alternating output signal as the track of encoding regions rotates about its axis past the detector, the alternating signal comprising a series of transitions between a first state corresponding to the detector being aligned with a first encoding region and a second state corresponding to the detector being aligned with second encoding region;identifying a usable pair of transitions in the first and second signals comprising a transition of the first signal from the first state to the second state followed by a transition in the second signal from the first state to the second state without in the intervening period having changed from the second state to the first state; measuring the elapsed time between the transitions of the identified usable pair, and determining the angular velocity by combining the elapsed time with the spacing between the first and second detectors.

The invention relates to a high-precision laser photocuring 3D (three dimensional) printer. The high-precision laser photocuring 3D printer comprises a shell and a pedestal. The high-precision laser photocuring 3D printer has the beneficial effects that one end of a high-precision ball screw is connected with a servo motor, the control precision of the servo motor is guaranteed by a rotary encoder at the rear end of a motor shaft and is accurate, and the high-precision laser photocuring 3D printer utilizes the servo motor, so that the printer is stable, and the energy consumption is reduced; as the ball screw has the characteristics of high positioning precision, small friction force, high rigidity and strong load capacity, the molding precision of the printer is high; a circuit control module is connected with a touch screen and a power supply switch respectively through data wires to intelligently control the printer, so that the control precision and processing efficiency are increased; a digital projection device comprises a digital projector horizontally fixed on the upper side of the pedestal, and a plane mirror, so that the structure of the printer is compact; the digital projection device comprises an ultraviolet source and a focusing lens, and the focusing lens is arranged above the ultraviolet source, so that the realizing theory is simple, and the cost performance is high.

An information display apparatus comprises a plurality of sensing devices, a signal processing block, an information display block, a menu storage block, a rotary control like a rotary encoder and a menu display block. The information display apparatus presents selectable menu items relating to images displayed on-screen together with information on hierarchical level of the menu items so that a user can easily recognize the hierarchical level of the currently presented menu items. The rotary control permits the user to select a desired one of the presented menu items by simple operation.

When a residual quantity of a battery of a self-propelled cleaner is decreased, automatic cleaning is interrupted and driving of a cleaner mechanism is simultaneously stopped, and when a forward obstacle is detected while allowing a self-propelled cleaner to be traveled along a wall, a rotary encoder measures a traveling distance of a cleaner body BD, thereby measuring a depth of the obstacle. Then, in a case where the measured traveling distance (X) is equal to a width (H) of a charger device that projects from the wall, it is judged that the obstacle is the charger device, and traveling of the self-propelled cleaner is controlled in such a manner that its charging terminal is operatively connected to an electrical supply terminal of the charger device. Thus said charging-type travel system is precisely self-traveled to a charger device and cause itself be positively subjected to charging.

First, a self-guided cleaning robot performs map cleaning in which the self-guided cleaning robot refers to cleaning region information (map) and travels. Then, upon performing the map cleaning, it is determined whether or not a traveling state based on results of detection by rotary encoders and a gyro sensor falls within predetermined a permissible range. If it is determined that the traveling state deviates from the permissible range, the map cleaning is finished, and is switched to random cleaning.

A device for detecting comprehensive performance of a ball screw assembly in a loaded state comprises a testboard machine body fixed on a cast iron platform, wherein a servomotor is arranged at one end of the testboard machine body; the output shaft of the servomotor is connected to one end of the ball screw assembly through a first coupler, a dynamic torque sensor and a second coupler; an eddy current sensor and a rotary encoder are arranged at the other end of the testboard machine body; a grating scale and an infrared temperature sensor are arranged on the testboard machine body; a rolling guide rail is arranged on the testboard machine body, and is provided with an analog working table; the analog working table is connected to the rolling guide rail through a rolling guide rail slide block, and is connected to a loading device; a ball screw assembly nut is arranged on the analog working table through a nut support base. The device is stable in properties, quick in movement and testing response speed, comprehensive and accurate in testing performance parameters, and simple in structure, and can realize the comprehensive performance detection of ball screw assemblies with different models in no-loaded states or loaded states.

The invention discloses a device for measuring spatial motion with six degrees of freedom and a dynamic measuring method. A fixed platform (1) of the measuring device is provided with six Hooke hinges (2), and a moveable platform (10) is arranged above the fixed platform (1). The moveable platform (10) is provided with six ball hinges (9) which are respectively connected with the corresponding six Hooke hinges (2) through branched chains. A revolute joint (6) of each branched chain is provided with a spiral coder (5). The dynamic measuring method comprises the steps of establishing a coordinate system, measuring an angle-time curve of relative motion of upper and lower support rods of the revolute joint (6) by the spiral coders (5), so as to obtain the law of motion with the spatial six degrees of freedom of an object measured by a positive solution of the angle-time curve of the spiral coder (5) and the like. The device and the method not only measure the motion with the six degrees of freedom simultaneously, but also ensures the accuracy of measuring results, and have the characteristics of being good in flexible, strong in adaptation, wide in measuring range, high in accuracy and the like.

The invention relates to a foldable radar antenna lifting mechanism based on space link multi-oil-cylinder coordinated drive. The foldable radar antenna lifting mechanism based on space link multi-oil-cylinder coordinated drive comprises a first-stage parallel mechanism, an auxiliary turnover mechanism, a second-stage parallel mechanism, a supporting platform mechanism, a first rotary encoder, a second rotary encoder and a horizontal sensor, wherein the first-stage parallel mechanism is installed on the auxiliary turnover mechanism, the upper portion of the second-stage parallel mechanism is installed on the auxiliary turnover mechanism, the bottom portion of the second-stage parallel mechanism is installed on the supporting platform mechanism, the first rotary encoder, and the horizontal sensor are installed on the first-stage parallel mechanism, and the second rotary encoder is installed on the second-stage parallel mechanism. The foldable radar antenna lifting mechanism based on space link multi-oil-cylinder coordinated drive has the advantages that the control accuracy and the safety are high, the rigidity is high, the stability during lifting is better, the lifting capacity is great, the spreading and folding speed is fast, the space occupied by the mechanism after being folded is small, multiple transportation manners are compatible, and the contradictions between the lifting height and the lifting capacity and between the lifting height and the mobility are effectively solved.

The invention relates to an intelligent vehicle steering mechanism and a control method thereof. The intelligent vehicle steering mechanism comprises a steering wheel, a torque sensor, a steering input shaft, a mode clutch, a worm gear and worm speed reduction mechanism, a steering output shaft, a rotary encoder, an electric motor, a safety clutch, a steering gear, a steering rack and a controller, wherein the steering wheel is connected with the steering input shaft through the torque sensor; and the steering input shaft is connected with a worm in the worm gear and worm speed reduction mechanism via the mode clutch, and an output shaft of the electric motor is connected with a worm gear in the worm gear and worm speed reduction mechanism via the safety clutch. When a vehicle is driven in an unmanned manner, the controller can select a position servocontrol method to realize precision angle and angular speed control of an automatic control mode; when the vehicle is controlled manually, the controller can select a torque control method to realize good driving experience of a manual control mode; the high-reliability safety redundancy design can ensure the safety driving when a fault occurs in a system; and long-term cruise control can be realized.

A rotary encoder includes two first detection units disposed at positions that are symmetrical about a rotation axis, each of the first detection units outputting an incremental signal, and second detection unit that outputs an absolute signal φA. The rotary encoder includes a storage unit that stores a plurality of formulas for correcting errors of the incremental signals, the formulas being different from each other in accordance with the signal φA, and the errors being generated due to eccentricity; a calculation unit that calculates a corrected phase φI by performing operation on the incremental signals by using one of the formulas corresponding to the signal φA; and a generation unit that generates a rotation angle of the scale on the basis of the phase φI and the signal φA.

The invention discloses an active heave compensation control system comprising a ship kinematic parameter detection module, a DSP control module and an execution module, wherein the kinematic parameter detection module comprises an accelerated speed sensor, a dip angle sensor, a first rotary encoder, a second rotary encoder and a signal conditioning circuit; the execution module comprises a main hydrauservo system, a secondary hydrauservo system and a differential planetary drive windlass. The invention has the following characteristics: 1. a feedback control mode is combined with a feed-forward control mode; 2. the active compensation of weight lowering speed is realized by detecting and predicting the ship kinematic parameter; 3. the heeling movement and the trimming movement of the ship are converted into heaving movement by the dip angle sensor to realize the heave compensation in three degrees of freedom, namely, heeling, trimming and heaving; and 4. the differential planetary drive windlass is used to realize speed composition of the feedback control and the feed-forward control.

An electrically powered linear actuator having a thrust assembly, a motor with a rotor surrounding at least a portion of the thrust assembly and a rotary encoder with a rotation sensing member rotatable with the rotor.

The invention relates to logistics equipment, in particular to an automatic sorting machine used for sorting parts of cased objects including a cased medicine. The automatic sorting machine comprises a roller type rack, a sorting mechanism, a horizontal moving mechanism, a helical gravity collector groove, a belt type conveyer and an electric control system corresponding to the belt type conveyor, wherein a sorting electromagnet and a shutter electromagnet of the sorting mechanism as well as a drive motor and a rotating coder of the horizontal moving mechanism are respectively connected with the electric control system of the belt type conveyor through control lines, and the electric control system is connected with an upper control computer though a data bus. The invention has the advantages of compact structure, large medicine or object storage quantity, wide application range, high sorting efficiency, flexible sorting action without damaging medicines or objects and good sorting quality; and the medicine or objects sorted from all layers are automatically collected to the belt type conveyor through the helical gravity collector groove, and can be conveyed to a medicine or object package working station according to the demands or directly to a medicine distributing window or object selling window, thus the automatic sorting machine is convenient for operation and high in automation, and saves time and labor.

The invention discloses a relative type rotary encoder and a measurement method thereof. The rotary encoder comprises a round coding disc, a rotary shaft, a data processing module, a casing, multiple light source systems and multiple photoelectric sensors, wherein a relative code channel and a reference zero code channel are arranged on the outer side surface of the round coding disc, the relative code channel comprises multiple grating strips which have the same width and are uniformly engraved on a circumference of the outer side surface of the round coding disc, and the reference zero code channel comprises two grating strips with different widths; the light source systems are all installed on the casing and are located in the radial direction of the round coding disc respectively; the plurality of photoelectric sensors are installed on the outer side of one light source system respectively and are connected with the data processing module. The relative type rotary encoder can avoid measurement errors caused by radial vibration, is high in measurement precision, anti-interference capacity, anti-pollution capacity and reliability and can be widely used for the field of rotation angle measurement.

A self-running robot tracking and imaging a human body with an inexpensive arrangement includes: first to fourth sensors; a camera; a driving device moving the first to fourth sensors and camera simultaneously; a rotary encoder detecting that the first to fourth sensors and camera have stopped; a control unit which, upon detection of a heat source by one of the first to fourth sensors, controls the driving device such that the camera turns to the direction which the sensor detecting the heat source faced, and controls the camera so as to image an object after the camera has stopped, and controls the driving device such that the first to fourth sensors remain stationary for 3 seconds after the camera has stopped irrespective of whether a heat source is detected.