127results about How to "Sports state is accurate" patented technology

A first observer gain of an actual damping force estimating observer 21 calculates a dynamic characteristic compensating signal, and a second observer gain of an actual vehicle model state amount estimating observer 23 calculates a vehicle model compensating signal, from an output deviation corresponding to a difference between a sprung speed (observation output) provided from a vehicle 2 and an estimated sprung speed (estimated observation output) provided from a vehicle approximation model of the actual vehicle model state amount estimating observer 23. The dynamic characteristic compensating signal is input into a dynamic characteristic providing unit of the actual vehicle model state amount estimating observer 23, and is used for adjustment of the setting of the dynamic characteristic providing unit. Therefore, it is possible to curb time lag occurrence in a control, and thereby perform a vibration control with improved accuracy.

The invention discloses a road horizontal curve radius design scheme security assessment method based on virtual vehicle rollover and sideslip tests. The method comprises the following steps of defining a control function used for assessing a target road; constructing a driver- heavy truck-target road virtual test simulation platform by using adams / car; acquiring a dynamic index of the heavy truck running on the target road at a designed speed v according to the virtual test simulation platform, and computing values of LTAr and LTRr; and judging whether the computed values of LTAr and LTRr meets the requirements of a control function F(r). According to the method provided by the invention, the moving state of the vehicle passing through a curve can be more accurately acquired, and an assessment result is acquired by rapid quantitative computation; the method can be applied to the roads in various stages, thus being wide in application range; by using the method to road horizontal curves in design and construction stages, dependency on real operation data of the roads can be avoided.

The invention discloses a test system and method for testing the field performance of a combine harvester and belongs to testing devices for combine harvesters. The test system is composed of a header, a conveying device, a flow cutting roller, two longitudinal axial flow rollers, a vibrating screen, a draught fan, a traveling device, an engine, a transmission system, a hydraulic system, an electrical system and the like. Power is supplied to the flow cutting roller, the two longitudinal axial flow rollers, the vibrating screen and the draught fan by hydraulic motors which are independent of one another respectively, corresponding sensors are installed on the flow cutting roller, the two longitudinal axial flow rollers, the vibrating screen and the draught fan to monitor the rotating speeds and the torques of the flow cutting roller, the two longitudinal axial flow rollers, the vibrating screen and the draught fan respectively, and stable work can be achieved during actual field operation. The test system and method mainly aims to solve the problems that the rotating speeds and torques of a flow cutting roller and two longitudinal axial flow rollers in a combine harvester threshing system can not be controlled independently, and the rotating speeds of a vibrating screen and a draught fan can not be controlled independently either. The speeds of the four parts are controlled independently, observation is conducted by means of the rotating speed and torque sensors or an encoder, and in this way, the cleaning losses and the non-threshing rate of grains under different rotating speed conditions can be measured. The system and method are applied to operation of field harvesters.

The invention provides a method for monitoring intake air particles of a user, a client device and a method and a server used for pushing components and dosage of the intake air particles of the user. The method for monitoring the intake air particles of the user comprises steps that the present geographic position of the user is acquired; based on the present geographic position, the components and concentration of the air particles at the special time corresponding to the present geographic position are acquired; a present motion state of the user is acquired; based on the present motion state and the components and concentration of the air particles corresponding to the present geographic position, the components and concentration of the accumulative intake air particles of the user for the special time interval are calculated. Through the method for monitoring the intake air particles of the user and the client device, the components and dosage of the intake air particles can be provided conveniently for different users in real time, as well as pertinent advice.

The invention relates to a testing device of a machine tool guide rail, in particular to a testing device of a machine tool guide rail protective cover. The testing device comprises a base, wherein the base is fixed with a motor which is controlled through a controller; the motor is connected with a guide rail; the guide rail is matched with a fixed frame at the lower part of the guide rail through a bearing; and the upper part of the guide rail is covered with a movable truss which is matched with the fixed frame. The testing device of the machine tool guide rail protective cover is unique in structure and is capable of meeting high moving speed and high accelerating and decelerating capacities of the machine tool.

A detection unit of Carioles mass flowmeter is prepared as fixing central magnetic conductor and ring magnetic steel on base to form circular gap between the two and to form uniform parallel magnetic field, moving detection coil and coil frame in formed circular gap to cut magnetic line for outputting signal in proportion to moving speed.

The invention relates to a booster bicycle provided with a sensor with a plurality of unevenly distributed magnetic blocks on a chain disc, and in particular relates to an electric booster bicycle used for providing booster signals for a plurality of point positions in a way of magnetic induction. The sensor comprises a sensing element, a booster model processor, a digital / analog (D / A) converter and an operational amplifier which are sequentially connected, wherein the chain disc taken as the sensing element is fixedly provided with the plurality of permanent magnet blocks, and every two adjacent permanent magnet blocks have the opposite magnetic polarities; the distances among the permanent magnet blocks are different from one another; a Hall of the sensing element is arranged on a frame close to the permanent magnet blocks; and the operational amplifier is connected with a motor controller. The booster bicycle has the advantages that square-wave signals can be obtained by the Hall, the sensor can conveniently use an artificial set booster model through digital processing output, the boosting is reasonable in the starting point, the finishing point and the force, human can cooperate with a machine, and the electricity is saved.

The invention discloses a sensor with a plurality of magnet blocks adjustable in position and magnetic flux in a shell, belonging to the technology of providing a control signal via multi-point-position magnetic induction. The sensor comprises a sensing component, a power-assisted model processor, a digital-analogue converter and an operational amplifier which are sequentially connected, wherein the sensing component comprises permanent magnet blocks and a Hall sensor in inner hollows embedded in a rotating disc and a fixed disc, a plurality of the annularly-distributed permanent magnet blocks are fixedly arranged on the rotating disc, the distances among the permanent magnet blocks and the magnetic fluxes of the permanent magnet blocks at different positions are adjustable, and the magnetic polarities of the adjacent permanent magnet blocks are opposite, that is, the magnetic polarities are distributed by alternately arranging N-poles and S-poles; and the Hall sensor on the fixed disc is arranged at a position close to the permanent magnet blocks. The sensor has the following advantages that: the Hall sensor can obtain a rectangular wave signal via the NS distribution of the magnetic poles, and the rectangular wave signal can participate in digital processing for setting the power-assisted model; and the rectangular wave signal can show the positions of the permanent magnet blocks on the rotating disc and determine the purposes of different rectangular waves by virtue of the difference of the distances and the difference of the magnetic fluxes, and the relative positions of the permanent magnet blocks and the Hall sensor are fixed, so that signal output is reliable.

The invention discloses a multi-magnetic block position-adjustable turntable sensing element, belongs to the technical field of providing signals by magnetic induction, and in particular relates to the technology of providing control signals by performing multi-point magnetic induction on a rotary part. A plurality of permanent magnet blocks which are arranged annularly are fixedly arranged on a turntable; the distance among the permanent magnet blocks can be adjusted; on one side of the turntable, the magnetic polarities of adjacent permanent magnet blocks are opposite, namely the distribution way of the magnetic polarities of all permanent magnet blocks on a certain side of the turntable is pole N, pole S, pole N, ellipsis; and a Hall element is arranged at the position close to the permanent magnet blocks. The multi-magnetic block position-adjustable turntable sensing element has the advantages that the Hall element can acquire square-wave signals by utilizing the NS opposite distribution way of the magnetic polarities of the adjacent permanent magnet blocks, and digital processing of the signals is facilitated; the square-wave signals can represent the positions of the permanent magnet blocks on the turntable by adjusting the distance among the permanent magnet blocks, and the application of different square waves are determined.

The invention relates to a booster bicycle provided with a sensor provided with a plurality of magnetic blocks with unevenly distributed magnetic fluxes in a shell, and in particular relates to an electric booster bicycle used for providing booster signals for a plurality of point positions in a way of magnetic induction. The sensor comprises a sensing element, a booster model processor, a digital / analog (D / A) converter and an operational amplifier which are sequentially connected, wherein the sensing element comprises the permanent magnet blocks and a Hall which are respectively arranged in a space where a rotary table and a fixed table are embedded; the rotary table is provided with the plurality of permanent magnet blocks, and every two adjacent permanent magnet blocks have the opposite magnetic polarities and different magnetic fluxes; the Hall arranged on the fixed table is arranged at the position close to the permanent magnet blocks; the sensor is sheathed outside a centre shaft of the bicycle; and the operational amplifier is connected with a motor controller. The booster bicycle has the advantages that the relative positions between the permanent magnet blocks and the Hall are fixed, square-wave signals can be obtained by the Hall, the sensor can conveniently use an artificial set booster model through digital processing output, the boosting is reasonable in the starting point, the finishing point and the force, human can cooperate with a machine in a best way, and the electricity is saved.

A moped employing a sensor with uniformly distributed magnetic blocks in a shell disclosed by the invention is an electric moped for providing a power signal by multi-point magnetic induction. The sensor comprises a sensing element, a power model processor, a digital-analogue converter and an operational amplifier which are orderly connected, wherein the sensing element comprises a rotating plate and a fixing plate; the permanent magnet blocks and halls are arranged on the fixing plate; a plurality of adjacent permanent magnet blocks of which the magnetic polarities are opposite are fixedly arranged on the rotating plate; the halls on the fixing plate are arranged at the positions near the permanent magnet blocks; the sensor is sleeved outside a middle shaft of a bicycle; and the operational amplifier is connected with a motor controller. The moped has the advantages that the opposite positions of the permanent magnet blocks and the halls are fixed; the halls can obtain rectangular wave signals; the sensor conveniently outputs an artificially set power model via digital treatment; and a power starting point, a finishing point and force are reasonable, so that a person and a machine can be matched and the electricity is saved.

The invention discloses an assisted bicycle using a sensor with non-uniform distribution of multiple magnetic blocks in a housing, and belongs to an electric assisted bicycle capable of providing assisting signals by multi-point magnetic induction. The sensor comprises a sensing element, an assisting model processor, a digital-analog converter and an operational amplifier, which are sequentially connected, wherein the sensing element comprises a rotating disk and a fixed disk, permanent magnets and Halls are arranged in internal space, a plurality of the permanent magnets, which have the opposite magnetic polarities in the adjacent permanent magnets and can regulate the intervals and the positions with different magnetic fluxes, are arranged on the rotating disk, and the Halls on the fixed disk are arranged in the positions near the permanent magnets. The sensor is sheathed outside a center shaft of the bicycle, and the operational amplifier is connected with a motor controller. The assisted bicycle has the advantages that the relative positions of the permanent magnets and the Halls are fixed, and the Halls can obtain rectangular wave signals, so that the sensor can conveniently output an assisted model which is artificially set and can be regulated by digital processing to realize reasonable start point and end point of assisting, as well as reasonable force, enable a person and a machine to realize optimal matching and save electricity.

The invention discloses a multi-magnetic block position-adjustable turntable sensor for an assisted bicycle, and belongs to the technology of providing a control signal by performing multi-point magnetic induction. The multi-magnetic block position-adjustable turntable sensor for the assisted bicycle comprises a sensing element, an assistance model processor, a digital-to-analogue converter and an operational amplifier which are connected in sequence; the sensing element is a plurality of permanent magnet blocks with adjustable space which are arranged on a turntable; the magnetic polarities of adjacent permanent magnet blocks are opposite, namely the distribution way is pole N, pole S, pole N, ellipsis; and a Hall element is arranged at the position close to the permanent magnet blocks. The multi-magnetic block position-adjustable turntable sensor for the assisted bicycle has the advantages that the Hall element can acquire square-wave signals by utilizing the NS opposite distribution way of the magnetic polarities of the adjacent permanent magnet blocks, and digital processing of the signals is facilitated; the square-wave signals can represent the positions of the permanent magnet blocks on the turntable by adjusting the distance among the permanent magnet blocks, and the application of different square waves are determined; and the sensor can output control model electric signals which are matched with the movement position of the permanent magnet blocks and are set artificially.

The invention relates to a rotary table type sensor provided with a plurality of magnetic blocks with adjustable positions and magnetic fluxes for a booster bicycle, belonging to a technology for providing control signals by multi-point magnetic induction. The sensor comprises a sensing element, a booster model processor, a digital / analog (D / A) converter and an operational amplifier which are sequentially connected, wherein the rotary table of the sensing element is provided with the plurality of permanent magnet blocks with adjustable positions and magnetic fluxes, and every two adjacent permanent magnet blocks have the opposite magnetic polarities, namely, the magnetic polarity distribution mode of the permanent magnet blocks is N pole, S pole, N pole, and so on; and the Hall is arranged at the position close to the permanent magnet blocks. The rotary table type sensor has the advantages that the every two adjacent permanent magnet blocks are distributed in the opposite magnetic polarities (NS), and square-wave signals can be obtained by the Hall, so that digital processing can be conveniently carried out on the signals; the positions of the permanent magnet blocks on the rotary table can be shown by the square-wave signals by adjusting the distances among the permanent magnet blocks and the magnetic fluxes of the permanent magnet blocks, so that the usage of the different square-wave signals can be confirmed; and the sensor can output electrical signals which have positions matched with movement positions of the permanent magnet blocks and have artificially set control models.

The invention relates to an improved analysis method for a bulk material flow characteristic under a unilateral excitation nonlinear unloading system, and belongs to the field of mechanical-bulk coupling system dynamics modeling. The unilateral excitation nonlinear unloading system with quadratic and cubic nonlinearity and the interaction between a mechanical system and a bulk material are considered at the same time. In addition, a unilateral excitation nonlinearity unloading system-bulk material coupling dynamics model is built; the influence of parameters of the mechanical system and the bulk material on the bulk material flow characteristic under nonlinear vibration is analyzed; and a motion state of the bulk material under the influence of a nonlinear factor and a judgment basis during change of the motion state can be described more really. Compared with other conventional numerical analysis methods, the method has relatively high calculation efficiency and precision. According to the method, the test cost can be greatly reduced, and a reference can be provided for design of a mechanical-bulk coupling system structure to improve system performance and security.

The invention discloses a sensor with a plurality of magnet blocks adjustable in position in a shell, belonging to the technology of providing a control signal via multi-point-position magnetic induction. The sensor comprises a sensing component, a power-assisted model processor, a digital-analogue converter and an operational amplifier which are sequentially connected, wherein the sensing component comprises permanent magnet blocks and a Hall sensor in inner hollows embedded in a rotating disc and a fixed disc, a plurality of the annularly-distributed permanent magnet blocks are fixedly arranged on the rotating disc, the distances among the permanent magnet blocks are adjustable, and the magnetic polarities of the adjacent permanent magnet blocks are opposite, that is, the magnetic polarities of all the permanent magnet blocks on one surface of the rotating disc are distributed by alternately arranging N-poles and S-poles; and the Hall sensor on the fixed disc is arranged at a position close to the permanent magnet blocks. The sensor has the following advantages that: the Hall sensor can obtain a rectangular wave signal via the NS distribution of the magnetic polarities, and the rectangular wave signal can participate in digital processing for setting the power-assisted model; and the rectangular wave signal can show the positions of the permanent magnet blocks on the rotating disc, and determine the purposes of different rectangular waves by virtue of adjustment on the distances among the permanent magnet blocks, and the relative positions of the permanent magnet blocks and the Hall sensor are fixed, so that signal output is reliable.

The invention relates to a sensing element provided with a plurality of magnetic blocks with adjustable positions in a shell, belonging to a technology for providing control signals by multi-point magnetic induction. The permanent magnet blocks and a Hall are respectively arranged in a space where a rotary table and a fixed table are embedded; the rotary table is fixedly provided with the plurality of permanent magnet blocks which are distributed in a circular ring shape, and the gaps among the permanent magnet blocks can be adjusted; the every two adjacent permanent magnet blocks arranged on one surface of the rotary table have the opposite magnetic polarities, namely, the magnetic polarity distribution mode of all the permanent magnet blocks on one surface of the rotary table is N pole, S pole, N pole, and so on; and the Hall arranged on the fixed table is arranged at the position close to the permanent magnet blocks. The sensing element has the advantages that the every two adjacent permanent magnet blocks are distributed in the opposite magnetic polarities (NS), and square-wave signals can be obtained by the Hall, so that digital processing can be conveniently carried out on the signals; the positions of the permanent magnet blocks on the rotary table can be shown by the square-wave signals by adjusting the distances among the permanent magnet blocks, so that the usage of the different square-wave signals can be confirmed; and the relative positions between the permanent magnet blocks and the Hall are fixed, so that the signals can be reliably output.

The invention relates to a power-assisting bicycle using a sensor with a plurality of non-uniformly distributed magnetic blocks in a shell and belongs to an electric power-assisting bicycle for providing a power-assisting signal by multi-point magnetic induction. The sensor comprises a sensing element, a power-assisting model processor, a digital-to-analog converter and an operational amplifier which are sequentially connected. The sensing element comprises a rotary table and a fixed disk and permanent magnetic blocks and a hall are arranged in an inner space in which the rotary table and the fixed disk are embedded. A plurality of permanent magnetic blocks are arranged on the rotary table, wherein each two adjacent permanent magnetic blocks have opposite magnetic polarities; and the permanent magnetic blocks are arranged at unequal intervals. The hall on the fixed disk is arranged at the position close to the permanent magnetic blocks. The sensor is sleeved outside a center shaft of the bicycle. The operational amplifier is connected with a motor controller. The power-assisting bicycle has the advantages that the relative positions of the permanent magnetic blocks and the hall are fixed; a square-wave signal can be obtained by the hall; the power-assisting bicycle is convenient for the sensor to output the signal by digital processing to artificially set a power-assisting model; the power-assisting initial point, a power-assisting end point and the power-assisting strength are reasonable; and a user and a machine can be optimally matched and power is also saved.

The invention discloses a control method of a hydraulic rotary table. The control method comprises the following steps of acquiring the rotation position information of the rotary table and calculating to obtain an expected output pressure value and an expected output flow value; respectively outputting actual pressure and actual flow according to the expected output pressure value and the expected output flow value; acquiring an actual pressure value and judging whether the expected output pressure value is equal to the actual pressure value or not; if no, calculating the difference value of the expected output pressure value and the actual pressure value; and outputting the corrected pressure according to the difference value. The invention also discloses a hydraulic rotary table system. In addition, the invention also discloses an injection molding machine comprising the hydraulic rotary table system. The control method of the hydraulic rotary table is additionally provided with an output pressure and position feedback link, so that the actual pressure value and the actual position are additionally subjected to corrected pressure output, and furthermore the rotary table is precisely controlled.

The invention relates to a rotary-disc type sensor with multiple magnets uneven in position for a motorized bicycle, and belongs to technology of providing control signals by multipoint magnetic induction. The rotary-disc type sensor comprises sensing elements, a motorized model processor, a digital-to-analog converter and an operational amplifier which are connected in sequence, the sensing elements include a plurality of permanent magnets and a Hall sensor unit, the permanent magnets are arranged on a rotary disc at different intervals, magnetic polarities of the adjacent permanent magnets are opposite, in other words, the permanent magnets are distributed according to a magnetic polarity sequence of N-pole, S-pole and N-pole..., and the Hall sensor unit is arranged at a position close to the permanent magnets. The rotary-disc type sensor has the advantages that since the permanent magnets are distributed in a mode that the magnetic polarities of the adjacent permanent magnets are opposite according to the sequence of N-pole, S-pole and N-pole..., the Hall sensor unit can acquire rectangular wave signals which can be processed digitally conveniently; since the intervals of the permanent magnets are different, the square wave signals can represent positions of the permanent magnets on the rotary disc, functions of different rectangular waves can be determined, and accordingly, the sensor can output electrical signals of a human-set control model matched with movement positions of the permanent magnets.

The invention discloses a sensor with non-uniform distribution of magnetic flux for multiple magnetic blocks in a casing and belongs to a technology of providing a control signal by multi-point induction. The sensor comprises a sensing element, an assisting model processor, a digital / analogue converter and an operational amplifier which are sequentially connected, wherein the sensing element comprises permanent magnet blocks and a Hall which are arranged in an inner hollow casing formed by embedding a fixed disk with a rotary disk; a plurality of permanent magnet blocks which are annularly distributed are fixedly arranged on the rotary disk; magnetic fluxes of at least two permanent magnet blocks on a certain surface of the rotary disk are different; magnetic polarities of adjacent permanent magnets on the certain surface of the rotary disk are opposite, i.e., the magnet polarity distribution mode of all permanent magnet blocks on the certain surface is N pole, S pole, N pole and the like; and the Hall on the fixed disk is arranged at a position close to the permanent magnet block. The sensor has the advantages that the magnetic polarity is in an NS distribution mode, so that the Hall can acquire a rectangular wave signal which can be used for digital processing of the set assisting model, expressing the position of the permanent magnet blocks on the rotary disk and determining applications of different rectangular waves; and a relative position between the permanent magnet blocks and the Hall is fixed, and thus the reliability in signal output is realized.

The invention discloses a power-assisted bicycle using a sensor with position-adjustable magnetic blocks in a casing, which belongs to an electrically power-assisted bicycle for providing power-assisted signals through multi-point-position magnetic induction. The sensor comprises a sensing element, a power-assisted model processor, a D / A (digital to analog) converter and an operational amplifier which are sequentially connected, wherein the sensing element comprises permanent magnet blocks and a hall arranged in an inner cavity formed by that a movable plate and a fixed plate are mutually embedded, the movable plate is provided with a plurality of permanent magnet blocks, wherein two adjacent permanent magnet blocks are opposite in magnetic polarity, and the distance between the permanent magnet blocks can be adjusted, and the hall on the fixed plate is arranged at a position close to the permanent magnet blocks. The sensor is sleeved outside of a middle axle of the bicycle, and the operational amplifier is connected with a motor controller. The power-assisted bicycle disclosed by the invention has the advantages that: the relative positions between the permanent magnet blocks and the hall are fixed, and the hall can acquire rectangular wave signals, thereby facilitating that the sensor outputs reasonable forces (which are artificially set and can be adjusted) from the power-assisted model to a power-assisted starting point and a power-assisted ending point through digital processing, so that the man-machine cooperation can be optimal, and an effect of power saving can be achieved.

The invention discloses an assisted bicycle with a sensor with a plurality of magnet blocks uniformly distributed in a shell, and belongs to an electric assisted bicycle which can provide assistance signals by multi-point magnetic induction. The sensor comprises a sensing element, an assistance model processor, a digital-to-analogue converter and an operational amplifier which are connected in sequence, wherein the sensing element comprises permanent magnet blocks and a Hall element which are arranged in the cavity formed by embedding a rotary disc into a fixed disc; a plurality of permanent magnet blocks are fixedly arranged on the rotary disc, wherein the magnetic polarities of adjacent permanent magnet blocks are opposite to each other; the Hall element on the fixed disc is arranged at the position close to the permanent magnet blocks; a sensor is arranged on a central shaft of a wheel of the bicycle; and the operational amplifier is connected with a motor controller. The assisted bicycle has the advantages that the relative position between the permanent magnet blocks and the Hall element is fixed; the Hall element can acquire square-wave signals, and the square-wave signals are subjected to the digital processing by the sensor and an assistance model is set artificially; the start point, the end point, and the power of the assistance are reasonable; and man and machine can be matched and electricity can be saved.

The invention discloses a turntable sensing element with unevenly distributed magnetic fluxes of magnetic blocks, belongs to the technical field of providing signals by magnetic induction, and particularly relates to a technology for carrying out multi-point magnetic induction to provide control signals on a rotating component. A plurality of permanent magnet blocks which are distributed in a ring are fixedly arranged on a rotating plate; the magnetic fluxes of at least two permanent magnet blocks are different; the magnetic polarities of the adjacent permanent magnet blocks are opposite at one side of the rotating plate, namely the magnetic polarity distribution mode of all permanent magnet blocks at one side of the rotating plate is an N pole, an S pole, the N pole ...; and halls on the fixing plate are arranged at the positions near the permanent magnet blocks. The turntable sensing element has the advantages that the halls can obtain rectangular wave signals by an opposite distribution mode of the magnetic polarities NS of the adjacent permanent magnet blocks; the signals can be conveniently subjected to digital treatment, the rectangular wave signals can present the positions of the permanent magnet blocks on the rotating plate by difference of the magnetic fluxes, and uses of different rectangular waves are determined.

The invention provides a robot RGB-D SLAM method based on geometric and motion constraints in a dynamic environment. The robot RGB-D SLAM method comprises the steps that image data are acquired through an RGB-D camera, wherein the image data comprise an RGB image and a depth image; the coordinates of feature points in a camera coordinate system are acquired through an ORB feature point detection algorithm, the RGB image and the depth image; the pose of a camera is calculated by using a g2o optimization algorithm; the feature points in the camera coordinate system are converted into a world coordinate system, and the coordinates of the same point in the world coordinate system are continuously tracked to obtain the multiple observation speeds of the point; whether the point is on a real moving object or a static object is known by analyzing the law of multiple observation speeds; after analyzing that the point is a real motion, the motion speed of the moving point and the coordinates under the world coordinate system are filtered through a Kalman filtering algorithm; and finally the moving point and the static point are added into g2o pose optimization. The method is effectively suitable for a dynamic environment, and a more accurate camera pose is obtained.

The invention discloses an anti-theft locating and tracking system. The anti-theft locating and tracking system comprises a locating device and a tracking device, wherein the locating device is arranged on an article, the tracking device is held by a user, the locating device comprises a first ARM processor, a first beidou navigation chip, a first circularly polarized antenna, a first GPRS chip, a first linearly polarized antenna, a second linearly polarized antenna, an FM emitting chip, a first accelerometer gyroscope chip, a sound alarm and a power module; the tracking device comprises a second ARM processor, a second beidou navigation chip, a second circularly polarized antenna, a second GPRS chip, a third linearly polarized antenna, a fourth linearly polarized antenna, an FM receiving chip, a second accelerometer gyroscope chip, a touch liquid crystal display screen and a power module. The anti-theft locating and tracking system integrates far-distance beidou navigation locating, a middle-distance radio direction finding locating, and small-distance moving state and alarm sound locating, and can achieve theft preventing, locating and tracking in various complex environments.

The invention relates to a motorized bicycle having a sensor with multiple magnets uneven in position and magnetic flux in a casing, and belongs to electric motorized bicycles with motorized signals provided by multipoint magnetic induction. The sensor comprises sensing elements, a motorized model processor, a digital-to-analog converter and an operational amplifier which are connected in sequence, the sensing elements include permanent magnets and a Hall sensor unit which are arranged in a cavity formed by combining a rotary disc with a fixed disc, a plurality of permanent magnets are arranged on the rotary disc, magnetic polarities of the adjacent permanent magnets are opposite, the distances among the permanent magnets are different, the magnetic flux of the permanent magnets are also different, and the Hall sensor unit on the fixed disc is arranged close to the permanent magnets. The sensor is arranged on a center wheel axle of the bicycle, and the operational amplifier is connected with a motor controller. The motorized bicycle has the advantages that relative positions of the permanent magnets and the Hall sensor unit are fixed, the Hall sensor unit can acquire rectangular wave signals, and human-set adjustable motorized model signals can be processed digitally and output to the motorized starting point and the finishing point by the sensor conveniently, so that motorized power is reasonable in distribution, manpower and motorized power can be matched optionally, and electric power is saved.

The invention relates to a digital twin motion simulation system and method for an industrial stacker, which is characterized by comprising: S1. According to the column, layer and fork position of the stacker on the stacker PLC in a real scene, find The coordinate data of the corresponding points of the stacker model in the 3D scene are recorded and recorded; S2. Obtain the real-time position coordinate data of the stacker on the stacker PLC; S3. Convert the real-time position coordinate data of the stacker into the position corresponding to the 3D scene data; S4, start the three-dimensional scene, use the received first frame data directly as the initial data of the model in the scene, and then compare the next frame data with the previous frame data to judge the movement state of the stacker within one frame time, and Control the movement of the stacker model in the scene. The invention reduces the difficulty of model making, facilitates and quickly builds a three-dimensional scene, the scene model data synchronization is more realistic and beautiful, and the movement state of the stacker is more accurate.

The invention discloses a booster bicycle provided with a sensor with multiple magnetic blocks in nonuniform distribution in a shell, and belongs to an electric booster bicycle capable of providing booster signals by multi-point position magnetic sensing. The sensor comprises a sensing element, a booster model processor, a digital-analog converter and an operational amplifier which are connected in sequence, the sensing element comprises a rotating disc, a fixed disc, permanent magnetic blocks and a hall, wherein the permanent magnetic blocks and the hall are arranged in an internal hollow space formed by the embedding of the rotating disc and the fixed disc, a plurality of permanent magnetic blocks are arranged on the rotating disc, the magnetic polarities of the adjacent permanent magnetic blocks are opposite and are different in distance, and the hall on the fixed disc is arranged at the position close to the permanent magnetic blocks. The sensor is arranged on a central shaft of a wheel of the bicycle, and the operational amplifier is connected with a motor controller. The booster bicycle has the advantages that the permanent magnetic blocks and the hall are relatively fixed, the hall can obtain rectangular wave signals, the sensor can be used for outputting after the digital processing, a booster model is set artificially, the booster start point, the booster finishing point and the booster power are reasonable, so that a user and a machine can be best matched, and the power is saved.

The invention discloses a sensor with multiple uniformly distributed magnets in a shell, belongs to the technical field of magnetic induction signal providing, and particularly relates to a technology for performing multi-point magnetic induction control signal providing on a rotary component. The sensor comprises a sensing element, a power assisting model processor, a digital-analog converter and an operational amplifier, wherein the sensing element comprises a rotary disc and a fixed disc; permanent magnets and halls are arranged in the cavity formed by embedding the rotary disc and the fixed disc; the rotary disc is fixedly provided with a plurality of annularly distributed permanent magnets; magnetic polarities of adjacent permanent magnets are reverse, i.e., the distribution mode is N pole, S pole, N pole and the like; and the halls on the fixed disc are arranged at positions close to the permanent magnets. The sensor has the advantages that the halls can acquire rectangular wave signals by using NS reverse distribution mode of magnetic polarities of the adjacent permanent magnets, digital processing of which a set power assisting model is added can be conveniently performed on the signal, relative positions of the permanent magnets and the halls are fixed, and signal output is reliable.