93results about How to "Easy to control the speed" patented technology

The invention discloses an integrated electric automobile driving and charging power converter. The integrated electric automobile driving and charging power converter comprises an isolated bidirectional DC conversion circuit connected with a power cell, a motor three-phase stator winding, a three-phase bridge circuit of which an AC end is connected with the motor three-phase stator winding and a DC end is connected with the isolated bidirectional DC conversion circuit, a single-phase uncontrolled rectification circuit of which an AC end is connected with a charging plug, and a contactor connected between a neutral point of the motor three-phase stator winding and a DC end of the single-phase uncontrolled rectification circuit. The integrated electric automobile driving and charging power converter is advantaged in that the power converter is integrated to make a driving system and a charging system share the same power converter, and high power density, high reliability, unit power factor, electrical isolation and low cost can be realized.

A dual-parameter control method for the braking and decelerating procedure of motor used in the car with mixed power features that the speed information is additionally used by control system, the braking intensity and speed are used to calculate the braking torque of motor, and the calculated result is used to control the motor.

The invention discloses an assembling method for a large-megawatt wind power gear box outer-ring-free cylindrical roller bearing. The assembling method comprises the steps that firstly, a planet wheel is horizontally corrected; secondly, a bearing sling is assembled; thirdly, a rolling element is tightened through a rubber rope, and radial deflection of the rolling element is eliminated; fourthly, the outer-ring-free cylindrical roller bearing is hoisted; fifthly, the outer-ring-free cylindrical roller bearing and an inner hole of the planet wheel are aligned in the axial direction, then, the bearing is rotated, it is guaranteed that the rolling element makes even contact with the rollaway nest face of the inner hole of the planet wheel and the rolling element falls into the inner hole of the planet wheel and is assembled in place; sixthly, the bearing sling is disassembled; seventhly, a pressing plate is used for pressing an assembled outer-ring-free cylindrical roller bearing, and the planet wheel is turned by 180 degrees and horizontally put on a contour cushion block; eighthly, the third step, the fourth step, the fifth step and the sixth step are repeatedly executed, and assembling of a second outer-ring-free cylindrical roller bearing and an inner hole of the other segment of the planet wheel is completed. The assembling method can effectively solve the problems of bearing hoisting and alignment of the inner holes of the planet wheel during assembling and can effectively avoid the situation that the rollaway nest face is damaged by assembling clamping and accident risks caused when the bearing is carried manually.

The invention relates to a metal grinding device used for processing metal and capable of automatically driving and conveniently adjusting size. The metal grinding device comprises a machine body, a connection rod, an electromagnetic box, a first motor, a coil, linkage rods, hairbrushes, a crawler belt, crawler belt rods, electromagnetic baffles and a storage box, wherein a movable plate is mounted on one side of the machine body; the outer side of a screw rod is wrapped with a bevel gear; the connection rod is mounted on the wall of one side of the movable plate; an extension rod is arrangedon one side of the inside of a support rod; the electromagnetic box is mounted on one side of the support rod; a belt is wound on one side of an electromagnetic block; the coil is wound on the outer side of a resistor; the linkage rods are mounted on the connection rod. According to the metal grinding device used for processing metal and capable of automatically driving and conveniently adjustingsize, the shape of the electromagnetic block is circular; the electromagnetic block is connected with the first motor through the belt; when the first motor rotates, the belt is used for simultaneously rotating the electromagnetic block; the rotation speed of the electromagnetic block is conveniently controlled; meanwhile, the pushing effect is achieved.

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.

The invention relates to the technical field of safety design of extra-large highway bridges, and particularly discloses a three-dimensional rhythm type information visual environment designing method for an extra-large highway bridge. A roadside multi-beat information flow, a planar multi-beat information flow and a multicolor information flow are involved, wherein the roadside multi-beat information flow is formed by wave crest height changes of roadside rhythm type information on bridge guardrails; the planar multi-beat information flow is formed by planar rhythm type information marks, road surface note marks and transverse speed prompting marks of a road surface; the multicolor information flow is formed by combining the bridge guardrails and the rhythm type information in different colors in a designing unit and combining different designing units in different colors. The characteristics of undiversified visual environment of a poor information shooting road section and reference deficiency are improved, hypnotic effects of a road are alleviated, the speed judgment accuracy of a driver is improved, the response time of the driver is shortened, and the driving safety and comfort of the driver are improved.

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 double-hole extruding and auxiliary online winding device of a continuous extruding machine. The double-hole extruding and auxiliary online winding device comprises a main body and a mechanical transmission mechanism, wherein the main body comprises a rack, a locking rod, a locating shaft, a locating pin, a rotary arm, a wire reel and a bearing block; the mechanical transmission mechanism comprises a sprocket wheel, a chain, a speed reducer and a motor; an electric control mechanism comprises a frequency converter, a speed controller and a control switch; the locating shaft is arranged on the rack and is locked by the locking rod; the wire reel penetrates through the locating shaft and is fixed on a central line of the rack; one end of the rotary arm is fixedly arranged on the locating shaft, and the other end of the rotary arm is fixedly arranged on the wire reel by the locating pin; the bearing block is fixed on the rack and is fixedly provided with the locating shaft; the motor and the speed reducer are fixed on the rack; the sprocket wheel comprises a driving sprocket wheel and a driven sprocket wheel, the driving sprocket wheel is fixedly arranged on the speed reducer, the driven sprocket wheel is fixedly arranged on the locating shaft, and the chain surrounds the driving sprocket wheel and the driven sprocket wheel.

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 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 half nuts. The half nuts comprise an upper nut body, a lower nut body, a shell, a hydraulic check ring, an upper limiting check ring and a lower limiting check ring; threaded half holes of the upper nut body and the lower nut body are correspondingly formed; a nut installing hole is formed in the shell, the upper limiting check ring is fixedly installed at the upper end ofthe nut installing hole, the lower limiting check ring is fixedly installed at the lower end of the nut installing hole, and the upper nut body and the lower nut body are arranged between the upper limiting check ring and the lower limiting check ring; and the outer sides of the upper nut body and the upper portion of the lower nut body are sleeved with the hydraulic check ring, the upper end of the hydraulic check ring is fixedly connected with the upper nut body, a hydraulic cavity is formed between the lower end of the hydraulic check ring and the lower nut body, an L-shaped liquid supply cavity is formed between the end face of the lower end of the lower nut body and the side wall of the lower nut body, and the liquid supply cavity communicates with the hydraulic cavity. According to the half nuts, opening and closing of the upper nut body and the lower nut body are controlled through a hydraulic system, therefore, the working condition of the half nuts is controlled, the structureis simple, control is precise and fast, and high and low speed control of a machine tool is convenient.

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 a scooter baby carriage. The carriage comprises a scooter body and a baby seat frame mounted on the front end of the scooter body. The scooter body comprises a scooter, two sets of sliding assemblies arranged at the front and back of the lower portion of the scooter and a brake assembly. Each sliding assembly includes a seagull support frame and two pulleys. Each seagull support frame is mounted on the lower surface of the scooter. The two pulleys are respectively mounted on both ends of the seagull support frame. The brake assembly includes a pedal, a first reset assembly used for the pedal, two brake shoes and a connecting rod. The lower end of the baby seat frame is installed on the scooter, the baby seat frame is provided with a baby seat pocket, and the upper end of the baby seat frame is provided with a handrail. According to the scooter baby carriage, the scooter baby carriage can move forward by using the power and inertia of the scooter as an ordinary scooter does, the fatigue caused by pushing the baby carriage is reduced, and the brake assembly, the baby seat frame and a reinforcement rod can be dismantled from the scooter body to allow a baby toexperience the joy of the scooter after the baby grows up a little.

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 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 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 sensing element with non-uniform distribution of multiple magnetic block positions and magnetic flux in a casing and belongs to a technology of providing a control signal by multi-point magnetic induction. Permanent magnet blocks and a Hall are arranged in an inner hollow casing formed by embedding a rotary disk with a fixed disk; a plurality of permanent magnet blocks which are circularly distributed are fixedly arranged on the rotary disk; the permanent magnet blocks are different in space and magnetic flux; magnetic polarities of adjacent permanent magnets on a 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 sensing element has the advantages that the magnetic polarities of adjacent permanent magnets are in an NS opposite distribution mode, so that the Hall can acquire a rectangular wave signal which is conveniently and digitally processed; by using the characteristics that the spaces and the magnetic fluxes are respectively different, the rectangular wave signal can express the position of the permanent magnet blocks on the rotary disk and determine purposes 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 an adjacent continuous tunnel group ventilation experiment device and a manufacture method. The experiment device comprises a left line upstream main tunnel, a left line downstream main tunnel, a right line upper stream main tunnel and a right line downstream main tunnel, wherein the four sections of main tunnels are bidirectional two-hole adjacent continuous tunnels whichare divided into left lines and right lines, and the middle parts of the four main tunnels are adjacent opening sections. According to the experiment device, four sections of main tunnels are combined, a longitudinal distance between each upstream tunnel and each downstream tunnel as well as a lateral distance between each left line tunnel and each right line tunnel can be regulated at will, so that an influence on tunnel group ventilation and pollution discharge by an adjacent tunnel interval, a tunnel group lateral distance, a tunnel temperature as well as a traffic flow and a speed in the tunnel is evaluated in the same tunnel ventilation experiment device, so that the manufacture cost of a model is saved, a manufacture period is shortened, in addition, an evaluation error is greatly lowered, and the accuracy of an evaluation result is guaranteed.

The invention relates to a motorized bicycle having a sensor with multiple position-adjustable magnets 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 adjustable, 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. 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 provides a sensor with a plurality of magnet positions and magnetic flux both unevenly distributed in a housing, belonging to the technology of providing a control signal through multi-point position magnetic induction. The sensor comprises a sensing element, a power model processor, a digital-to-analogue converter and an operational amplifier which are sequentially connected, wherein the sensing element comprises a rotating disc and a fixed disc; permanent magnets and a hall are embedded in the inner cavity of the fixed disc; a plurality of permanent magnets different in spacing and magnetic flux are fixedly arranged on the rotating disc; the adjacent permanent magnets are opposite in magnetic polarity, namely, the distribution manner of the magnetic polarities of all permanent magnets on one surface of the rotating disc are pole N, pole S, pole N...; and the hall on the fixed disc is arranged in a position in the vicinity of the permanent magnets. The sensor has the following advantages that the magnetic polarities are in N-S distribution so that the hall is capable of obtaining a rectangular wave signal, which can be added for digital processing of a set power model; the rectangular wave signal is capable of indicating the positions of the permanent magnets on the rotating disc; therefore, the uses of different rectangular waves are determined; and the relative positions of the permanent magnets and the hall are fixed and the signal output is reliable.

A moped provided with a sensor with unevenly distributed positions of magnetic blocks on a motor casing 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 a plurality of adjacent permanent magnet blocks of which the magnetic polarities are opposite are fixedly arranged on the motor casing as the sensing element; the distances between the permanent magnet blocks are different; a hall of the sensing element is arranged on a frame near the permanent magnet blocks; and the operational amplifier is connected with a motor controller. The moped has the advantages that the hall can obtain a rectangular wave signal, 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 with a magnetic flux sensor with a plurality of magnet blocks nonuniformly arranged on a flywheel, 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 a plurality of permanent magnet blocks are fixedly arranged on the flywheel serving as the sensing element, and the magnetic polarities of adjacent permanent magnet blocks are opposite to each other; magnetic fluxes of the permanent magnet blocks are different from each other; a Hall element of the sensing element is arranged on a bicycle frame close to the permanent magnet blocks; and the operational amplifier is connected with a motor controller. The assisted bicycle has the advantages that 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.

A sensor having multiple magnetic blocks of adjustable positions in a housing, comprising, sequentially connected, a sensing element, a power-assist model processor (21), a digital-to-analog converter (27), and an operational amplifier (28). The sensing element comprises permanent magnet blocks (2) and a Hall element (3) arranged within a cavity fitted together by a rotating disk (1) and a fixed disk (40). Fixedly arranged on the rotating disk (1) are the multiple permanent magnet blocks (2) in a circular-annular distribution, the spacing intervals between the permanent magnet blocks (2) are adjustable, the magnetic polarities of adjacent permanent magnet blocks (2) are opposite, that is, the magnetic polarities of all of the permanent magnet blocks (2) on a certain side of the rotating disk (1) are distributed in a pattern of N pole, S pole, N pole...; the Hall element (3) on the fixed disk (40) is arranged at a position in proximity to the permanent magnet blocks (2). The advantages of the sensor is that the N-S distribution of the magnetic polarities allows the Hall element (3) to acquire a rectangular wave signal, and to add a digital processing for setting a power-assist model; by adjusting the spacing intervals of the permanent magnet blocks (2), the rectangular wave signal is allowed to express the positions of the permanent magnet blocks (2) on the rotating disk (1), and to determine the uses of different rectangular waves; the relative positions of the permanent magnet blocks (2) and of the Hall element (3) are fixed, and signal output is reliable.