32results about How to "High switching accuracy" patented technology

The invention discloses a double PON ONU optical link protection switching device and protection method. The device comprises a first optical module, a second optical module, a first PON_MAC chip, a second PON_MAC chip, a complex programmable logic device CPLD, a multiplexer MUX and an exchange chip. The first optical module and the second optical module are connected with two different optical line terminals OLT to form a protection link hand in hand. According to the invention, an uplink interface RGMII of the exchange chip is in direct line connection with the PON_MAC chip interface, MDC / MDIO is in direct connection with the multiplexer, a control line is used to control the CPLD to complete a switching motion, and the problems in the prior art that the CPLD source is insufficient and the main-standby switching time is long are solved.

An automatic phase mask plate switching device used for writing a grating through a phase mask plate writing method is composed of a phase mask plate rotary switching clamp, a stepping motor, a drive circuit and a control system. By means of the automatic phase mask plate switching device, the operation of writing the fiber grating is greatly simplified, the fiber grating can be automatically written, and the quality and repeatability of grating writing can be improved.

A switch apparatus, system and method are disclosed herein, including one or more magnetic sensing elements that follow a travel path thereof, and a plurality of permanent magnets located in a mirrored configuration about the travel path. Such a configuration permits a magnetic field variation associated with the permanent magnets and the magnetic sensing element to be reduced with respect to the magnetic sensing element and the permanent magnets position tolerances, thereby generating a reduced magnetic field variation thereof which improves switching accuracy. A signal processing module can also be provided, which includes a signal conditioning circuit associated with a microprocessor.

A switch apparatus, system and method are disclosed herein, including one or more magnetic sensing elements that follow a travel path thereof, and a plurality of permanent magnets located in a mirrored configuration about the travel path. Such a configuration permits a magnetic field variation associated with the permanent magnets and the magnetic sensing element to be reduced with respect to the magnetic sensing element and the permanent magnets position tolerances, thereby generating a reduced magnetic field variation thereof which improves switching accuracy. A signal processing module can also be provided, which includes a signal conditioning circuit associated with a microprocessor.

The invention relates to a multi-station resistance detection device. The device comprises a bottom plate, a fixing bracket, a lifting mechanism, a servo electric cylinder, an electric cylinder originpoint induction switch, protection induction switches, a detection assembly, a multi-station rotation working stage, and a plurality of product positioning clamps; the fixing bracket is of a frame structure and is vertically disposed on the bottom plate; the top of the fixing bracket is horizontally provided with a fixing plate; the lifting mechanism comprises two linear guide rails and a slidingtable arranged on the linear guide rails and is arranged at one side surface of the fixing bracket; the cylinder body of the servo electric cylinder is arranged on the upper end surface of the fixingplate of the fixing bracket; the piston rod of the servo electric cylinder passes through the fixing plate so as to be connected with the sliding table; the electric cylinder origin point induction switch and the protection induction switches are arranged on the fixing bracket at one side of the sliding table through a support and are distributed along the axial direction of the linear guide rails; the detecting assembly comprises at least two probes; the multi-station rotation working stage is arranged on the bottom plate at one side of the fixing bracket and includes a working stage body and a driving device which drives the working stage body to rotate; a plurality of stations, distributed along the circumferential direction of the upper end surface of the working stage body, are arranged on the upper end surface of the working stage body; one side of the working stage body is located below the detection assembly and is corresponding to one station; and the plurality of product positioning clamps are arranged on the stations of the multi-station rotation working stage respectively.

The invention discloses an all-fiber transverse mode switchable high-order mode Brillouin laser. The laser comprises a narrow linewidth pump laser, an optical amplifier, a 1xN optical switch (N is greater than or equal to 2), a fiber mode selection coupler group, a first polarization controller, a fiber circulator, a fiber coupler, a second polarization controller and a few-mode fiber. According to the laser, on the basis of Brillouin nonlinear gain of the few-mode fiber in a ring cavity, resonance amplification of a specific-order transverse mode in the cavity is realized, and the transversemode switchable high-order mode laser output is obtained. According to the laser, an all-fiber structure is employed; the laser has the advantages that the structure is simple, the cost is low, a fiber system is integrated easily, the stability of the output laser is high, and the linewidth is narrow; and the practicability and reliability of the high-order mode laser are improved.

The invention provides a fusion control device and method for 3D printing. The fusion control device comprises a main controller, a heating assembly, a heating controller and a locking control assembly. The heating controller and the locking control assembly both are connected with the main controller and operate under the control of the main controller. The heating assembly is connected with the heating controller. The heating assembly comprises a first constant-temperature heating block, a second constant-temperature heating block and a heat-resistant support. The heat-resistant support is made of a heat insulation material. The first constant-temperature heating block and the second constant-temperature heating block are correspondingly arranged on the two sides of the heat-resistant support and are matched with a nozzle on a 3D printer. The temperature working point of the first constant-temperature heating block is set as the fusion extrusion temperature, the temperature working point of the second constant-temperature heating block is set as a semi-solidification temperature for preventing fusion sagging, the first constant-temperature heating block and the second constant-temperature heating block are kept in the constant-temperature state under the control of the heating controller, and the locking control assembly controls the first constant-temperature heating block and the second constant temperature heating block to be in contact with or separated from the nozzle.

The invention discloses a side body clamp flexible conveying and switching system used for a trial-manufacturing production line based on a two-layer steel structure platform. A main station is arranged on the first layer of the two-layer steel structure platform. The side body clamp flexible conveying and switching system comprises a clamp flexible switching mechanism arranged on the second layer of the two-layer steel structure platform and workpiece pushing mechanisms arranged on the two sides of the main station on the first layer of the two-layer steel structure platform. An automobile side body is fixed to the clamp flexible switching mechanism through a side body clamp, and then the clamp flexible switching mechanism is conveyed to the workpiece pushing mechanisms through a conveying device; and the workpiece pushing mechanisms push the clamp flexible switching mechanism to an automobile body welding station, and conveying and assembling of the automobile side body are achieved. The side body clamp flexible conveying and switching system is simple in design and low in manufacturing cost; flexible switching, conveying and assembling of side bodies of various automobile types can be met through cooperation with different side body clamps; the clamps of the automobile types are overall switched; the switching precision is high; and rechecking is not needed. The problems that tools are specially used for special automobiles and cannot be utilized repeatedly, and the investment is large are solved.

The invention is suitable for the technical field of computer vision, and provides a method and a device for realizing soft photosensitivity based on deep learning, a terminal and a storage medium, and the method for realizing soft photosensitivity based on deep learning comprises the steps: obtaining a target day and night prediction model corresponding to a current working mode of an image collection device; based on N frames of images continuously acquired by the image acquisition device in the current working mode, target input information corresponding to the target day and night prediction model is acquired, and N is an integer greater than zero; inputting the target input information into the target day and night prediction model to obtain the current environment of the image acquisition device; and if the current environment is not matched with the current working mode, controlling the image acquisition device to be switched to a working mode matched with the current environment. According to the scheme, the hardware cost and the labor cost can be reduced, and the switching precision of the working modes of the image acquisition device is improved.

The invention relates to the field of space coronameters, in particular to a dual-mode switching system for a space coronagraph and a switching method thereof. The switching system comprises a self-calibration light source switching device, a light path switching device and a positioning device. A plurality of self-calibration light sources in the self-calibration light source switching device areconnected with a wavelength division multiplexer through optical fibers, and the wavelength division multiplexer is connected with an optical fiber connector. A motor in the light path switching device is connected with a worm, the worm and a worm gear shaft are installed on an outer frame, a worm gear is installed on the worm gear shaft and meshed with the worm, an optical fiber fixing rod is installed at the locking end of the worm gear shaft, and the optical fiber connector is installed on the optical fiber fixing rod. An encoder is connected to the positioning end of the worm gear shaft.The switching method comprises the steps that the encoder obtains angle position information; the worm gear shaft rotates to the position of a calibration angle, and a light path is calibrated; and the worm gear shaft rotates to a zero position, and starlight enters the space coronagraph. By improving the structure, the switching system is high in precision and reliability and small in weight andsize.

A temperature sensor for a radiant heater has a first tubular expansion element which is connected to its housing and contains a second rod-like expansion element, the two expansion elements having different coefficients of thermal expansion. The temperature sensor has two switching springs for different switching points. In order to adjust a second switching spring, which is fastened to a second switching spring base, the second switching spring base can be moved in the longitudinal direction of the rod and is then permanently fixed by bending or welding.

The invention relates to the field of intelligent circuit breaker control, and discloses a three-phase power grid electrical parameter measurement method comprising the following steps that A1, current and voltage signals of all phases of a three-phase power grid are synchronously sampled; A2, the sampled current and voltage signals of all phases are conditioned and converted into digital signals through A / D conversion; and A3, the converted current and voltage of all phases are calculated by adopting fast Fourier transform so that effective values UK and IK of harmonic voltage and current of each order and active power PK of all phases are obtained. The invention also discloses an intelligent circuit breaker control method. Intelligent circuit breaker control is performed by adopting the method so that switching precision can be effectively enhanced, the switching strategy can be simplified, the problems of intelligent circuit breaker diagnosis alarm and high-speed real-time data communication can be solved, the overall performance of the circuit breaker can be greatly enhanced, and the "four remote" functions of remote metering, remote control, remote signaling and remote regulating of the onsite circuit breaker can be realized.

A method for controlling a belt drive of a drivetrain of a motor vehicle, with a planetary gear set which shifts a transmission ratio between a starter-generator and a combustion engine, the planetary gear set having a ring gear which can be connected fixedly with respect to a housing by a brake, a web which is connectible to a crankshaft of the combustion engine of the drivetrain, having planet gears arranged around the circumference, and a sun gear which is connected in a rotationally fixed connection to a rotor of the starter-generator and to at least one ancillary unit, as well as having a first switchable free wheeling mechanism which blocks in the direction of torque from the rotor to the crankshaft and having a second switchable free wheeling mechanism which blocks in the direction of torque from the crankshaft to the rotor.

A control unit (100) for actuating a pressure valve, particularly for actuating an overpressure valve in an aircraft cabin, comprises an actuating body (20) and a pressure-controlled actuator (30) for the actuation of the actuating body (20) as a function of a predetermined threshold pressure valve, wherein the threshold pressure value can be adjusted by means of an adjustment device (40, 50). The adjustment device (40, 50) comprises a first adjustment unit (40) and a second adjustment unit (50), wherein the actuating body (20) can be adjusted by means of the first adjustment unit (40), and the actuator (30) can be adjusted by means of the second adjustment unit (50).

The invention relates to a solenoid valve having an actuator body (17), in which a magnet coil (15) that interacts with a magnet core (16) is arranged and which interacts with an armature (14) that can be moved relative to the magnet core between two end positions and is acted upon by the spring force of an armature spring (13) in a movement direction pointing away from the magnet core (16). The magnet core and the armature have stop surfaces (18a, 18b) which are interrupted by a recess (29) that receives the armature spring. According to the invention, a solenoid valve is provided which is improved with respect to the function of the solenoid valve and the stress on the stop surfaces (18a, 18b) that causes wear. This is achieved in that the magnet core (16) and / or the armature (14) have / has a design (30, 31), in particular a spherical or toroidal design, which reduces the stress on the edges in the region of the stop surfaces (18a, 18b).

The invention discloses a double PON ONU optical link protection switching device and protection method. The device comprises a first optical module, a second optical module, a first PON_MAC chip, a second PON_MAC chip, a complex programmable logic device CPLD, a multiplexer MUX and an exchange chip. The first optical module and the second optical module are connected with two different optical line terminals OLT to form a protection link hand in hand. According to the invention, an uplink interface RGMII of the exchange chip is in direct line connection with the PON_MAC chip interface, MDC / MDIO is in direct connection with the multiplexer, a control line is used to control the CPLD to complete a switching motion, and the problems in the prior art that the CPLD source is insufficient and the main-standby switching time is long are solved.

The invention relates to a segmented synchronous SHEPWM switching control method, a medium and electronic equipment, and the method is used for controlling the switching of SHEPWM modes with differentcarrier ratios, and comprises the following steps: obtaining the ratio n of the minimum pulse width to the PWM period time; when a switching condition is met, judging whether the following two conditions are simultaneously met or not in each PWM period: A, each path of PWM signals in the first n periods is kept unchanged before switching; and B, the level output by the SHEPWM after switching is the same as the level output by the SHEPWM before switching, or all paths of PWM signals in n periods after switching are kept unchanged; if yes, completing SHEPWM switching of different carrier ratios, and if not, keeping the current carrier ratio running. Compared with the prior art, the method can effectively solve the problem of narrow pulse when SHEPWM switching of different carrier ratios isachieved at any time through segmented synchronous modulation SHEPWM.

The invention provides an optical filter switching device which comprises a rack, a transmission assembly, an optical filter assembly and a limiting assembly, wherein the optical filter assembly is installed on the rack through a rotating shaft and can move in the transverse direction and the longitudinal direction of the rack, and the transmission assembly and the limiting assembly are both installed on the rack; and the transmission assembly drives the optical filter assembly to move around the rotating shaft through a gear, and the limiting assembly controls the rotating angle of the optical filter assembly. The optical filter switching device is simple and compact in structure and can meet the requirement of a theodolite optical system for dimming.

The invention relates to automatic vehicle positioning pin switching equipment in a flexible welding line. The equipment is formed by connecting a driving assembly, H-direction gripper assemblies, B-direction gripper assemblies and a T-direction gripper assembly. The driving assembly comprises a T-direction driving component, B-direction driving components, H-direction driving components, a T-direction linear guide rail, a T-direction driving bracket A, a T-direction driving bracket B, a B-direction and H-direction driving bracket, a T-direction and B-direction driving bracket A, a T-direction and B-direction driving bracket B, a fixed connecting frame A, a fixed connecting frame B, a cover plate, a switch bracket and a ranging switch; each H-direction gripper assembly comprises a transition bracket, a cylinder mounting board I, a cylinder I, a limiting stopper and a pressing block; each B-direction gripper assembly comprises a cylinder II, a cylinder mounting board II a positioning plate I, a connecting rod I, a pressing header I and a swinging arm I; the T-direction gripper assembly comprises a cylinder III, a positioning plate II, a cylinder head, a swinging arm II, a connecting rod II, a pressing header II, a connecting frame and a breathing block. The automatic vehicle positioning pin switching equipment is simple in structure and reliable in performance, can switch a positioning pin position at will, and is high in speed and switching precision, and very significant in the application effect.