748 results about "Position detector" patented technology

The invention discloses a beam current testing device for accelerator beam current debugging, which comprises an integrated short-distance testing device without a focusing or deflecting magnet, and is characterized in that the testing device comprises a vacuum chamber, and at least two beam current position detectors are integrated on the vacuum chamber along the beam current ejection direction of an accelerator; the two beam position detectors connected with the vacuum chamber are symmetrically arranged on the two sides of the vacuum chamber, and the center distance is adjustable; the vacuum pipeline where the beam position detector is located is coaxially provided with a flow intensity measuring device and a beam garbage target, and the flow intensity measuring device is provided with an insulation sealing structure for preventing generation of mirror current; and a vacuumizing device is also integrated on the vacuum chamber. The testing device is not provided with any magnet, does not focus or deflect the beam current, is simple in structure, achieves the measurement of the beam current intensity, beam current energy and beam spot size through the simplest structure, is small in installation space, meets the requirements of ACCT current intensity measurement for isolating mirror current, and can be flexibly installed according to the needs.

The invention discloses an accelerator parameter optimization allocation method based on digital twinning, which relates to the technical field of accelerators, and comprises the following steps: installing at least one beam position detector with a strip-shaped structure along a linear accelerator, and measuring the orbit change of a particle beam along the accelerator; describing the motion state of the particles in a two-dimensional phase space by adopting a two-dimensional vector; analyzing an element off-axis of the linear accelerator and a beam off-axis caused by a stray magnetic field; calculating the amplitude and phase change caused by the cavity coupler on the transverse plane; judging whether the position of the output particle flow exceeds a preset threshold range or not; using a one-to-one correction method to optimize the syndrome to reduce the beam off-axis at the beam position detector with the maximum beam off-axis change; sequentially optimizing all correctors at the upstream by using an overall orbit correction method; the particle beams coming out of the accelerating tube are transmitted along a direction close to the central axis. The orbit of the beam in the accelerator is strictly controlled by optimizing the parameters of the corrector in the accelerator.

The invention relates to the technical field of particle accelerators, in particular to a transverse feedback system with a switchable excitation direction and a control method thereof, and the system comprises a beam position detector BPM which is used for measuring a beam signal; the RF front end is used for receiving the beam signal sent by the beam position detector BPM and carrying out amplification and filtering processing; the ADC module is used for converting the beam signal into a digital signal; the digital signal processing module is used for carrying out digital signal processing calculation to obtain an excitation signal; the DAC module is used for carrying out digital-to-analog conversion; the power divider is used for adjusting the phase of the excitation signal; the exciter comprises four Kickers with electrodes, a power amplifier, a low-pass filter and a matched load and is used for applying a transverse excitation signal to the beam current, and the problems that in the prior art, a transverse feedback system Kicker occupies a large longitudinal space, the system is complex, and precision and efficiency are low are solved.

The invention relates to the technical field of turning equipment, and particularly discloses a wave-tooth composite gasket production device and process, the wave-tooth composite gasket production device comprises a machine body, a cutting mechanism and a rotating mechanism, the cutting mechanism comprises a mounting seat, a cutter and a first elastic part, the cutter is provided with a cutting surface, and when a gasket is cut, the first elastic part elastically presses the cutter on the gasket; a lifting mechanism is further arranged on the mounting base and comprises a position detector, a controller and a lifting driving part, the lifting driving part drives the tool to ascend and descend, the position detector detects the position of the tool, and when cutting resistance borne by the tool is increased and the tool is jacked up to a preset position, the controller controls the lifting driving part to drive the tool to ascend; the cutter no longer cuts the gasket. During use, when the cutting resistance borne by the cutter is increased, the cutter can move upwards to trigger the controller to control the lifting driving piece to drive the cutter to ascend, so that the cutter does not make contact with the wave-tooth composite gasket any more, the cutter is prevented from cutting under the large cutting resistance, and the service life of the cutter is prolonged.

The inductive position detector includes: a stator having a wiring board; a rotor having a non-conductive component disposed in opposed relation to the stator and rotatable relative to the stator about a rotation axis; a conductor pattern held by the non-conductive component so as to have cyclicity (geometrical periodicity) circumferentially about the rotation axis, and movable to pass through a rotation track defined about the rotation axis as the rotor is rotated; and a plurality of chip inductors surface-mounted on a major surface of the wiring board of the stator in opposed relation to the rotation track so as to have different spatial phases with respect to the conductor pattern, and respectively serving as detection coils that detect a magnetic field change occurring due to the passage of the conductor pattern.

An electrical device for a rotational device of a human-powered vehicle comprises a force sensor, a position detector, and an electronic controller. The force sensor is configured to measure a force applied to the rotational device. The position detector is configured to detect a rotational position of the rotational device. The electronic controller is configured to adjust a measurement value of the force sensor based on the rotational position detected by the position detector.

The invention belongs to the field of nuclear power stations, and particularly relates to a reactor measuring coil sectional type rod position detector and a measuring method thereof, the detector comprises a measuring coil, a temperature compensation coil, a temperature compensation coil support groove and a coil holder; the measuring coil is wound on the coil holder, a temperature compensation coil supporting groove is formed in the coil holder, and the temperature compensation coil is wound in the temperature compensation coil supporting groove; the measuring coil is divided into N sections, and N is an integer greater than or equal to 2; each section of measuring coil is a continuous coil, and the N sections of measuring coils have no overlapped part. According to the invention, the rod position measurement precision, the rod position measurement reliability and the rod position measurement applicability can be greatly improved.

The utility model provides semiconductor epitaxy equipment, which comprises a process cavity, a position detection device and a storage chamber, and is characterized in that a tray and a preheating ring surrounding the tray are arranged in the process cavity; the position detection device comprises an adjusting bracket and a position detector; the storage chamber provided with a cavity door provides a containing space for the position detection device, and detection of the relative position of the tray and the preheating ring is achieved through the position detector. The utility model further provides another semiconductor epitaxy device, the semiconductor epitaxy device comprises the process cavity and a position detector, a tray is arranged in the process cavity, the position detector is arranged in the process cavity and located below the tray, and position detection of the tray is achieved through the position detector. According to the utility model, the gap and / or levelness between the tray and the preheating ring can be detected, the problem of edge deviation can be solved, the risk rate of products can be effectively controlled, the yield of the products can be improved, meanwhile, the time efficiency can be effectively controlled during equipment maintenance, and a basis is provided for production and goods arrangement.

A position detector includes a position detection magnet unit installed at each of a plurality of carriers, and a position detection unit. The position detection magnet unit includes a plurality of magnets disposed such that different magnetic poles are arranged alternately in a transport direction of the carriers, and side magnetic shielding portions installed at the ends of the position detection magnet unit. The position detection unit includes: a processing substrate disposed in parallel to the transport direction of the carriers; a plurality of magnetic detection elements disposed side by side in the transport direction of the carriers on a front side of the processing substrate; and a substrate-side magnetic shielding portion opposite the magnetic detection elements, the substrate-side magnetic shielding portion being installed on a back side of the processing substrate.

The utility model provides a multi-axis shape and position error synchronous measuring device. The multi-axis shape and position error synchronous measuring device comprises a laser module, a light splitting steering system, a two-dimensional position detector A arranged on a sliding block of a first linear guide rail, a two-dimensional position detector B arranged on a sliding block of a second linear guide rail, and a two-dimensional position detector C arranged on a sliding block of a third linear guide rail, initial laser output by the laser module is divided into a first Y-axis collimated light beam, a second Y-axis collimated light beam and a third X-axis collimated light beam through the light splitting steering system, and the first Y-axis collimated light beam, the second Y-axis collimated light beam and the third X-axis collimated light beam enter the two-dimensional position detector A, the two-dimensional position detector B and the two-dimensional position detector C respectively. According to the utility model, multiple form and position errors such as parallelism and verticality between the guide rails can be measured at the same time through one-time measurement, one-by-one measurement is not needed, and the measurement efficiency is greatly improved.

A system and method are provided for determining a location of a laser using a diffraction grating. The system includes a lens that projects diffraction patterns from the diffraction grating as an image of diffraction peaks onto a plane. Optical sensors then sense the diffraction peaks. A processor connected to the optical sensors applies a laser position determination method to determine the laser location. In the method, the processor obtains the diffraction peak measurements from the optical sensors and applies a transform to arrange the diffraction peaks into a grid of regularly spaced peaks. The processor then applies convolution kernels to analyze the grid of regularized peaks to to determine a position of a zeroth order diffraction central peak that is used to calculate the angle of incidence of the axis of the laser beam to determine the laser position.

The invention discloses a warehousing system based on AMHS and a warehousing method thereof, and the warehousing system comprises a goods shelf which is used for storing material frames; the adsorption device comprises a sliding table module and an adsorption disc, and the sliding table module is used for driving the adsorption disc to move front and back so as to grab or release the material frame; the connection conveying device comprises a lifting platform, a transverse moving platform and a bearing platform, the bearing platform conveys the material frame through a transmission belt, and the bearing platform is provided with an in-place detector, a first in-place sensor, a second in-place sensor and a butt joint sensor; a butt joint sensor is arranged on one side of the bearing platform, and a butt joint reflecting plate is arranged in the positioning jacking working groove and corresponds to the butt joint sensor. The bearing platform is connected with the adsorption device through the up-down module. And the working platform comprises a positioning jacking working groove, and the conveying belt is responsible for moving the position of the material frame. The system has the beneficial effects that the whole process of the system is automatically joined, the transfer efficiency is remarkably improved, manual intervention is reduced, and the system is suitable for high-frequency industrial logistics scenes.

An agricultural machine includes a traveling vehicle body, a position detector to detect a position of the traveling vehicle body, a lifting device to link a working device to the traveling vehicle body, and an automatic operation controller to perform an automatic operation to cause the traveling vehicle body to travel and cause the working device to perform an agricultural job based on a travel route and the position of the traveling vehicle body. The lifting device is operable to, during the automatic operation, place the working device in a work position in which the working device performs the agricultural job, and the automatic operation controller is operable to cause the lifting device to keep the working device in the work position even after stopping the traveling vehicle body and / or the working device to end the automatic operation at a location short of an unworked area of the agricultural field.

The invention relates to a beam feedback system based on radio frequency direct acquisition, which comprises a beam position detector, a sum and difference device, a front-end processing module, a feedback processor and an amplification excitation module which are connected in sequence, the sum-difference device is used for determining a horizontal position signal, a vertical position signal and a longitudinal position signal of the beam bunch according to the position signal of the beam bunch, the front-end processing module is used for pre-processing the position signals of the beam bunch, and the feedback processor is used for sampling the pre-processed position signals of the beam bunch; the feedback module is used for receiving a beam bunch and generating a horizontal feedback signal, a vertical feedback signal and a longitudinal feedback signal of the beam bunch, and the amplification excitation module is used for amplifying the feedback signals of the beam bunch and acting the amplified feedback signals of the beam bunch on the beam bunch, so that the instability of the beam is inhibited.

Provided is a failure detection device for an electric actuator for an emergency stop device that can improve maintainability of an electric device portion. The failure detection device for the electric actuator for the emergency stop device detects a failure of the electric actuator (10). The electric actuator actuates a drive mechanism that drives the elevator emergency stop device, and includes a movable element (a, 34b, 34c) mechanically connected to the drive mechanism and a first electromagnet (35a) and a second electromagnet (35b) facing the movable element. The failure detection device includes: a position detector (109) configured to detect a position of the movable element; and a controller (103) configured to detect a failure of the electric actuator based on a position detection signal from the position detector. The controller issues a command to cut off energization of the first electromagnet during standby of the electric actuator, and then detects a failure of the second electromagnet based on the position detection signal.

The invention relates to a coarse-fine integrated pointing mechanism for optical communication, and belongs to the field of optical communication equipment. The problems that in the prior art, a coarse pointing mechanism and a fine pointing mechanism are separated, so that the size is large, and cooperative work efficiency is low are mainly solved. The technical scheme is characterized in that the coarse pointing function and the fine pointing function are integrated into a single compact structure, large-range coarse adjustment around an azimuth axis y1 is achieved through a rotary table on a base, and high-precision fine adjustment around a pitch axis x2 and an azimuth axis y2 is achieved through a reflector supporting frame and a reflector on a mounting piece; the first motor, the second motor and the third motor respectively drive; full-state sensing is performed through a multi-axis angle sensor, a light beam position detector and a temperature monitoring module; and the controller performs real-time thermal error feedforward compensation on the driving instruction of the fine pointing motor according to the temperature monitoring data and a pre-stored thermal deformation compensation model. The mechanism is mainly used in a free space optical communication system, and realizes rapid capture, high-precision alignment and stable tracking of light beams.

An outboard motor includes a steering mechanism including a pinion located in a central portion of an outboard motor body in a right-left direction and operable to rotate together with the outboard motor body, a rack operable to linearly move to rotate the pinion, and a rack position detector on a first side of the rack opposite to the pinion to detect a position of the rack.

The utility model belongs to the technical field of printer auxiliary equipment, and relates to a glass flat printer which comprises a width gauge, a first guide limiting piece, a clamping centering device, a second guide limiting piece, a position detector and a uv printer which are sequentially and linearly installed on a supporting and conveying main body, and a monitoring system is installed on the side, away from the position detector, of the uv printer. The width gauge is erected at the end of the supporting and conveying body, and the supporting and conveying body, the width gauge, the clamping and centering device, the position detector, the uv printer and the monitoring system are all in communication connection with the control cabinet. According to the utility model, through a continuous and linear working process, manual intervention and waiting time are reduced, so that the glass can be printed more quickly, the overall working efficiency is improved, the productivity is improved, and continuous flat plate printing of the glass is realized.

A 3D printer includes a frame, a carrier, a nozzle and a detection device. The carrier is fixed to the frame. The nozzle is movably disposed on the frame. The detection device includes a piezoelectric ceramic sheet and a position detector. The piezoelectric ceramic sheet is in contact with the carrier. The position detector is disposed on the nozzle.

The invention discloses a multi-hole position tolerance detection device and a position tolerance detection method, the multi-hole position tolerance detection device comprises a bottom rack, a clamping module, a measuring module and a displacement mechanism, the clamping module is installed at the center of the top of the bottom rack, the bottom of the displacement mechanism is installed at two sides of the bottom rack, the measuring module is installed on the displacement mechanism, and the displacement mechanism is installed on the bottom rack. The measuring module comprises a fastening unit, a first offset unit, a second offset unit and a detection unit, the fastening unit is connected with the displacement mechanism, the fastening unit and the first offset unit are clamped in the length direction and can slide in the length direction, and the first offset unit and the second offset unit are clamped in the width direction and can slide in the width direction; the detection unit comprises a displacement detection piece and a position degree detection piece which are respectively used for detecting offset and workpiece hole positions. According to the invention, the offset of the detection unit is acquired through the first offset unit and the second offset unit by using the offset measurement module, so that the position degree error is determined, and the detection precision of the position degree error of multiple holes is improved.

The invention provides a button type signal feed-through for a beam position detector. The button type signal feed-through comprises a shell, a composite unit and an insulator. The composite unit comprises a button electrode and an inner conductor, and the button electrode is suitable for sensing an electromagnetic field signal generated by charged particle beams in the vacuum cavity; the inner conductor vertically and integrally extends from the center of the button electrode, a flange is arranged near one end, close to the button electrode, of the inner conductor, and the inner conductor is suitable for transmitting beam electromagnetic field signals. The insulator is sleeved on the inner conductor and comprises a first section cylinder and a second section cylinder, and the front end face of the first section cylinder is welded and fixed with the flange of the inner conductor; the second section of cylinder body extends outwards in the radial direction from the rear end of the first section of cylinder body, the circumferential outer surface of the second section of cylinder body is welded and fixed with the shell, and the insulator is suitable for fixed support and electrical insulation, so that smooth transition of transmission impedance and vacuum sealing are realized. The invention further provides a preparation method of the charged particle beam position detector and a charged particle beam position detector structure.

The utility model discloses an automatic feeding device of a thread rolling machine and the thread rolling machine comprising the feeding device. The automatic feeding device of the thread rolling machine comprises a stock bin, a jacking mechanism and a V-shaped groove. One end of the stock bin is a feeding port, the other end of the stock bin is provided with the jacking mechanism and the V-shaped groove, and the face, used for containing pipes, of the stock bin is an inclined face and inclines downwards towards the side where the jacking mechanism is located. The clamping device is characterized in that a pushing device is arranged at one end of the V-shaped groove, a limiting baffle is arranged at the other end of the V-shaped groove, an in-place detector is arranged on the limiting baffle, a displacement detection sensor is arranged on the side face of the V-shaped groove, and at least two clamping positions are arranged on the V-shaped groove. According to the utility model, the automatic feeding of common pipes with the length of 30mm-350mm can be realized through the arrangement of the pushing device, and the automatic clamping of pipes with different lengths can be realized through the arrangement of a plurality of clamping positions.

The invention provides a reciprocating tool and a method of controlling an electric motor of the reciprocating tool. One aspect of the present invention relates to a reciprocating tool comprising a reciprocating member, an electric motor, a transmission device, a control circuit, a drive circuit, a position detector, and a signal cut-off circuit. The drive circuit (i) receives at least one drive signal, and (ii) drives the electric motor in accordance with the received at least one drive signal. The position detector outputs a position detection signal whenever the reciprocating member reaches a predetermined position during at least one reciprocating operation. The signal cut-off circuit cuts off at least one drive signal for the drive circuit in response to the position detector outputting the position detection signal.

The embodiment of the invention provides a muon angle measurement cross positioning method and device based on simulation, a medium and equipment, and the method comprises the following steps: constructing a muon flux model based on the distribution of muons on an azimuth angle and a zenith angle; constructing an angle measurement cross positioning model, and calculating the coordinates of the positioning detector through the coordinates of the reference detector and the coordinates of the positions where the muons penetrate through the positioning detector by using the angle measurement cross positioning model; an angle measurement cross positioning error model is constructed based on the angle measurement cross positioning model, and the value of a geometric precision factor is calculated by using the angle measurement cross positioning error model; constructing an angle measurement cross positioning physical simulation model; and operating the angle measurement cross positioning physical simulation model, generating a positioning result based on an effective event output by the angle measurement cross positioning model, and performing precision analysis on the positioning result. According to the scheme, the physical simulation model is positioned through angle measurement cross, so that the efficiency of a verification link before an in-situ experiment is improved, and the experiment cost is reduced.

The invention provides a track longitudinal resistance on-line monitoring circuit, method and system, and the circuit comprises a position detector which is independently powered and is disposed at the front end of a to-be-detected track; the voltage measuring module and the track are arranged in parallel; the detection circuit is connected with the track in series and comprises a first branch circuit, a second branch circuit and a third branch circuit which are arranged in parallel, the first branch circuit comprises a control branch circuit, the second branch circuit comprises a current measurement module and a diode which are arranged in series, and the third branch circuit comprises an insulation joint. Real-time monitoring of the rail longitudinal resistance can be carried out even when an urban rail power supply system runs online, the control branch can freely adjust starting and stopping of the detection process, the control branch can be matched with the position detector to avoid the influence of traction current generated when a train runs on a measurement result, the accuracy degree of the monitoring result is greatly improved, and the reliability of the monitoring result is improved. The method has the remarkable advantages of high detection precision, flexibility in use, high efficiency, wide application range and the like.

The disclosure improves the quality of seams in sewing using a sewing machine, and includes: a holder holding fabric; a driver being detachable from a bed of a sewing machine and driving the holder along an upper surface of the bed; a position detector detecting a position of a sewing needle of the sewing machine in an up-down direction; and a controller controlling driving of the holder, which is performed by the driver, based on a detection result of the position detector.

The invention relates to a laser transmitting and receiving device, a method for carrying out optical axis self-calibration on the laser transmitting and receiving device and a machine readable storage medium. An optical amplifier of the device comprises: a first optical amplifier assembly configured to be connected to a transmitting mirror group via a transmitting optical fiber; a second optical amplifier assembly configured to be connected to the receiving lens group via a receiving optical fiber; a calibration light supply device configured to be associated with the first optical amplifier assembly to provide calibration light; and an optical power detector connected to the second optical amplifier assembly and configured to detect at least the power of the calibration light. In a case where the lead galvanometer is adjusted to scan, the calibration light is provided to the position detector to perform a first measurement of optical axis self-calibration, and the calibration light passing through the receiving mirror group is provided to the optical power detector to perform a second measurement of optical axis self-calibration. According to the laser transmitting and receiving device, calibration is carried out by means of existing devices, laboratory calibration is not needed, and the calibration result is not affected by the environment.

The utility model relates to a position identification device and a detection system for detecting the absolute position of an elevator car, belongs to the technical field of elevator equipment, and solves the problems of low precision, high environmental requirements, high cost and the like in the conventional method for detecting the absolute position of the elevator car. The detection system comprises a position identification device and an identification recognition device, the position identification device comprises magnetic strips installed in an elevator shaft in a segmented mode, and an upper door area, an upper floor absolute coding area, a flat layer position induction area, a lower floor absolute coding area and a lower door area are sequentially distributed on each magnetic strip. The identification recognition device reads sensing data of the Hall sensors corresponding to all the areas of the magnetic strip and outputs corresponding signals to an elevator control system. According to the utility model, the overall length of the magnetic strip is shortened, the cost is low, the absolute position detector is suitable for absolute position detection of elevator cars in high-rise and super high-rise buildings, the service life is long, the detection precision is high, the induction distance is large, the anti-interference performance is strong, and the absolute position detector is not easily influenced by ambient light intensity, cleanliness and magnetic field.

A sewing machine external unit includes: a holder holding fabric; a driver being detachable from a bed of a sewing machine and driving the holder along an upper surface of the bed; a pressing member moving in an up-down direction according to movement of a sewing needle in the up-down direction, pressing the fabric while the sewing needle is stuck in the fabric, and rising together with the sewing needle in response to the sewing needle coming out of the fabric and rising; a position detector detecting a position of the pressing member in the up-down direction; a signal output part outputting a signal to the sewing machine; and a controller outputting a needle drive signal for driving the sewing needle from the signal output part to the sewing machine, and controlling driving of the holder and / or the sewing needle based on a detection result of the position detector.

The invention discloses a rod position information synchronous monitoring device based on a rod falling test, and relates to the field of pressurized water reactor nuclear power stations, the device comprises a rod control system, a rod position system and interface equipment; the rod control system is used for acquiring an induction current signal output to the corresponding holding coil by each sub-group rod bundle holding case when a rod falling button is pressed down, determining a rod falling reference signal based on the induction current signal, and synchronously transmitting the rod falling reference signal to the rod position system through interface equipment; the rod position system is used for collecting an induced voltage signal of a primary coil in the rod position detector when a rod falling button is pressed down, obtaining rod position measurement information based on the induced voltage signal, and synchronously transmitting the rod position measurement information to the rod control system through interface equipment; and the rod control system and the rod position system synchronously obtain a rod falling test analysis result according to the rod position measurement information and the rod falling reference signal, so that synchronous monitoring of the rod position information is realized. According to the invention, the efficiency of the rod dropping test can be improved and the labor cost is saved.