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2355 results about "Distance sensors" patented technology

Nuclear fusion device and monitoring system and installation method thereof

The invention relates to the technical field of nuclear fusion devices, and discloses a nuclear fusion device and a monitoring system and an installation method thereof, the monitoring system comprises a cold shield main body, the cold shield main body is of an annular rotation structure, and the cold shield main body is arranged in a cavity and wraps the circumferential outer side of a vacuum chamber; the cold shield main body comprises a plurality of groups of fan-shaped cold shield sections which are sequentially arranged in the circumferential direction, and the plurality of groups of fan-shaped cold shield sections are encircled to form the cold shield main body; the distance measuring assembly is arranged on the cold shield main body, the distance measuring assembly comprises a plurality of groups of distance measuring sensors which are arranged in the circumferential direction of the cold shield main body at intervals, and each group of distance measuring sensors comprises a plurality of distance measuring sensors; the distance measuring sensor is used for detecting the size of a gap between the cold shield body and the longitudinal field coil and the size of a gap between the cold shield body and the vacuum chamber. Therefore, the cold shield main body can be assisted to be assembled at a position in the nuclear fusion device, and the matching position of the cold shield main body, the vacuum chamber and the longitudinal field coil can be monitored in real time.
Owner:聚变新能(安徽)有限公司 +1

Machine room inspection robot

Provided is a machine room inspection robot, comprising a robot body, propellers, supporting rods, a top protection plate, a protection ring, elastic pieces, a control part, distance sensors, connecting rods, walking wheels and rotating shafts. The robot body is an unmanned aerial vehicle of a circular structure when overlooked. Propellers are respectively arranged on two sides of the top of the robot body. A supporting rod is arranged at the top of the robot body. A top protection plate is arranged at the tops of the supporting rods. A protective ring is arranged on the periphery of the robotbody. The protection ring is connected with the robot body through an elastic piece, a distance sensor is arranged on the periphery of the top of the robot body, a control part is arranged in the robot body, the distance sensor is electrically connected with the control part through a cable, connecting rods are symmetrically arranged at the bottom of the robot body relative to the center line, and walking wheels are arranged at the bottom ends of the connecting rods. The robot has the advantages that the inspection mode that a traditional inspection robot can only shuttle and walk on the ground for inspection is changed, the moving range of the robot is not limited by ground obstacles, and certain flexibility is achieved.
Owner:天津市远畅科技有限公司

Method, system and device for predicting hoisting of balance beam of crane

The invention discloses a method, a system and a device for predicting hoisting of a balance beam of a crane. The method comprises the following steps: acquiring operation data of the balance beam in an operation space; establishing a measurement range model according to the position data; calculating an adjustment value of each lifting hook according to the inclination angle data and the spatial position data; according to the data of the horizontal distance between the balance beam and the surrounding space object, judging and determining a safety area of the operation of the balance beam; calculating the stress and strain of the balance beam by using the structural parameters of the balance beam; calculating an attitude angle in the lifting operation process by using acceleration data of the lifting operation of the balance beam; and analyzing the calculated data by using a fusion algorithm to obtain a balance beam hoisting operation model, a monitoring index and a prediction result. The system comprises modules corresponding to the method, the device comprises an ultrasonic distance measuring sensor, an inclinometer, an acceleration sensor, a processing module and a display device, the operation efficiency can be guaranteed, and the operation safety can be improved.
Owner:SHANXI TAIZHONG SHUZHI TECH CO LTD

Liquid crystal display driving control method and system

The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display driving control method and system. Comprising the following steps: SS01, multi-modal sensing and state triggering: fusing a user distance, a fixation point coordinate and ambient light illumination in real time by using an integrated sensor, and triggering an eye protection mode or a self-adaptive sleep mechanism according to the user distance, the fixation point coordinate and the ambient light illumination, SS02, image partitioning and strategy generation: dividing a screen into N * M partitions, and SS03, distinguishing a dynamic region from a static region according to the brightness histogram and the motion vector of each partition, and outputting differentiated refresh rates and backlight strategies, and SS03, performing big data learning and model optimization, and collecting user behaviors. The system has the advantages that the infrared proximity sensor, the eyeball tracking sensor, the distance sensor and the ambient light sensor are integrated through the multi-mode sensing and state triggering module, multi-dimensional data such as user distance, fixation point coordinates and ambient light illuminance are fused in real time, and active intelligent sensing of the user state and the environment is achieved.
Owner:SHENZHEN MINGYASHUN TECH CO LTD

Method for controlling cleaning device and cleaning device

The present disclosure provides a method for controlling a cleaning device and a cleaning device. The cleaning device includes a first distance sensor disposed at a bottom. The control method includes: in a process in which the cleaning device moves on a bottom of a pool, when the cleaning device approaches or collides with an obstacle, controlling the cleaning device to climb the obstacle; and in a process of climbing the obstacle, if the obstacle is determined as a step, controlling the cleaning device to move from a first surface of the step to a second surface of the step, where the step at least includes the approximately vertical first surface and the approximately horizontal second surface, where the obstacle is determined as the step at least based on a detection value of the first distance sensor.
Owner:XINGMAI INNOVATION TECH (SUZHOU) CO LTD

Electrical equipment electricity verification measuring device

The invention discloses an electricity testing measuring device for power equipment. The invention relates to the field of space electric field measurement, and solves the problems of unsafety and low anti-interference capability of an existing electricity testing scheme. The electric field sensor collects the electric field intensity in a non-contact manner, and the distance sensor synchronously collects the detection distance, so that a conventional contact type electroscope does not need to contact equipment through a telescopic insulating rod. The signal processing circuit preprocesses electric field intensity information and distance information respectively to obtain effective analog signals representing the electric field to be measured, and the defect that a traditional non-contact plate electrode sensor induces stray electric fields indifferentially is overcome. Besides, the judgment control circuit judges the electrification state according to the preset electric field threshold value corresponding to the current distance analog signal instead of a single fixed threshold value of a traditional device instead of adopting a fixed threshold value, the electric field distribution characteristics of equipment with different voltage grades are adapted, manual intervention is not needed, and personal safety is guaranteed. And the occurrence rate of production accidents caused by abnormal electrification of equipment is reduced.
Owner:STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST

Device for detecting leakage of molten salt heat storage tank and working method of device

The invention belongs to the technical field of fused salt heat storage tank leakage detection, and discloses a device for fused salt heat storage tank leakage detection and a working method thereof. According to the device for detecting the leakage of the fused salt heat storage tank, a rotary supporting assembly is rotatably mounted on a base, and an equipment mounting frame is further mounted on the base; a plurality of spray heads and a plurality of cameras are arranged on the equipment mounting rack; one end of the detection cylinder is provided with a detection pipe and an air inlet pipe, and the other end is provided with an air outlet; one end provided with the air outlet is provided with a distance sensor, and the other end provided with the air outlet is further provided with a piston plate through an elastic assembly; the control unit is used for controlling rotation of the rotary supporting assembly, controlling opening and closing of the spray head, obtaining data collected by the distance sensor and obtaining data collected by the camera. According to the technical scheme, bubble visual monitoring and pressure change monitoring are combined, and the sensitivity and accuracy of leakage detection are improved.
Owner:JINING HUAYUAN HEAT POWER CO LTD +1

Multi-mode prediction type intelligent straightening system and method for fully mechanized coal mining face of coal mine

The invention discloses a coal mine fully mechanized coal mining face multi-mode prediction type intelligent straightening system and method.The system comprises a multi-mode sensing network, a data fusion prediction module and a control optimization module, and thermal imaging double cameras, pressure / dip angle / stroke / distance measuring sensors and laser scanners are arranged on hydraulic supports and inspection equipment; the comprehensive sensing of the working environment of the fully mechanized coal mining face is realized; fusing visible light, infrared, point cloud and state parameter data, and performing support attitude estimation and trend prediction by adopting Kalman filtering and an LSTM neural network; according to the intelligent support control system and the control method thereof, self-adaptive dynamic straightening control is executed based on a prediction result, remote monitoring and a closed-loop optimization mechanism are combined, the support control precision and the operation safety are improved, the automation level and the response capability of fully-mechanized coal mining operation are improved, and the intelligent support control system is suitable for complex mine pressure conditions.
Owner:CHANGZHOU LIANLI AUTOMATION TECH

Preview road surface detector, suspension controller, and preview road surface detection method

A preview road surface detector capable of discontinuing predictive control is provided, which suppresses the energy consumption required to determine whether predictive control should be discontinued. The preview road surface detector includes: a distance sensor provided on a vehicle body member, the distance sensor detecting a value related to a distance between the vehicle body member and a measurement point on a road surface ahead of a vehicle, the measurement point corresponding to at least part of a road surface contact portion of a wheel; and a distance calculator that calculates a road surface distance as the distance from the vehicle body member to the measurement point, based on a detection value detected by the distance sensor, in which the distance sensor is deactivated under a predetermined condition.
Owner:HONDA MOTOR CO LTD

Intelligent door anti-pinch method and system

The invention relates to an intelligent door anti-pinch method and system, an intelligent door comprises a frame body and a movable leaf capable of being opened and closed in a sliding mode in the frame body, and the method comprises the steps that the rotation angle value of a motor shaft of a motor unit is collected in real time; measuring an actual distance value between a preset measuring point on the movable leaf and a corresponding reference surface on the door frame in real time through a distance sensor; calculating a theoretical displacement value of the movable fan relative to the initial zero point based on the rotation angle value; continuously comparing the deviation value between the theoretical displacement value and the actual distance value in the displacement process of the movable fan; when the deviation value exceeds a preset safety threshold value, it is judged that the foreign matter exists; and sending a control instruction for stopping door closing or reverse operation. According to the scheme, whether foreign matter blocking exists or not is effectively recognized by comparing the deviation between the motor rotation angle and the theoretical displacement and the deviation between the sensor distance measurement and the actual distance, and non-contact obstacle clamping judgment is achieved. And the method is suitable for various forms of intelligent sliding door systems.
Owner:SHENZHEN HOPO WINDOW CONTROL TECH CO LTD

Efficient injection mold based on intelligent temperature control and manufacturing method thereof

The invention discloses an efficient injection mold based on intelligent temperature control and a manufacturing method thereof.The mold comprises an upper mold plate and a lower mold plate, a mold cavity is formed in the bottom end of the upper mold plate, a male mold is arranged at the top end of the lower mold plate, an injection molding cavity is formed in the bottom end of the lower mold plate, a temperature sensor, a first cooling runner and a second cooling runner are arranged on the side of the mold cavity, and the first cooling runner and the second cooling runner are distributed in parallel at intervals; the liquid inlet end is connected with a speed-adjustable water pump through an electromagnetic valve, and a distance sensor is arranged on the side face of the upper die plate. The manufacturing method comprises the steps of template processing, cooling flow channel forming, sensor installation, cooling system connection and calibration and the like. The temperature sensor and the distance sensor are matched with the electromagnetic valve and the water pump, rapid cooling during mold closing, reasonable temperature control during mold opening and blockage prevention are achieved, reasonable cooling runner layout and precise machining are combined, the forming precision and the production efficiency are improved, and stable and efficient injection molding is ensured.
Owner:SUZHOU GET PLASTIC TECH CO LTD

Detection equipment and method based on basic diameter of piston

The invention discloses detection equipment and method based on the basic diameter of a piston, and relates to the technical field of piston detection, the detection equipment comprises a mounting seat and a U-shaped frame mounted on one side of the mounting seat, and a distance measurement calibration piece is arranged on one side, away from the U-shaped frame, of a positioning seat. According to the device, the distance measurement calibration part is arranged, an infrared distance measurement sensor is started to measure the distance between a first calibration plate and one end of the infrared distance measurement sensor, and when a first servo motor drives a transmission shaft to rotate by 90 degrees, the first calibration plate moves to the inner side of a first storage bin; when the variable quantity of the numerical value on the infrared distance measuring sensor is equal to the distance between the first calibration plate and the second calibration plate, it is indicated that the infrared distance measuring sensor is in a normal operation state. In this way, the measurement data of the infrared distance measuring sensor can be calibrated, and the accuracy of the data detected by the infrared distance measuring sensor is further improved.
Owner:FUJIAN YOUFU NEW ENERGY TECH CO LTD

Automatic pool cleaning equipment and method for creating pool map

The invention discloses an automatic pool cleaning device and a method for creating a pool map. The method comprises the steps that the automatic pool cleaning device is controlled to move on the water surface or the bottom of a pool; in the process of controlling the automatic pool cleaning equipment to move, at least one of posture data of the automatic pool cleaning equipment and the water flow speed in a pool and distance data from a distance sensor of the automatic pool cleaning equipment are obtained; and generating a pool map based on at least one of the attitude data and the water flow velocity and the distance data, where the generated pool map is a calibrated pool map based on at least one of the attitude data and the water flow velocity.
Owner:SHENZHEN AIPER INTELLIGENT CO LTD

Methods and systems for long-range sign or surface recognition using lidar

A method of operating a distance sensor includes emitting pulses of light from an emitter on the distance sensor at one or more designated wavelengths in a non-visible spectrum and receiving a set of reflected pulses of light with a receiver on the distance sensor that correspond to the pulses of light reflected off a surface of an object within a line-of-sight of the receiver. A point cloud is generated of an area including the surface of the object based on the set of reflected pulses of light. A pattern is identified on a surface of the object based on at least one of an area of increased or decreased reflectivity for the one or more designated wavelengths in the non-visible spectrum identified in the point cloud. Embedded data is decoded from the pattern on the surface of the object.
Owner:GM GLOBAL TECHNOLOGY OPERATIONS LLC

Film thickness laser measuring device of composite printing machine

The invention relates to the technical field of thickness laser measurement, and discloses a composite printing machine film thickness laser measurement device which comprises a supporting base, a fixing support is arranged on one side of the top of the supporting base, and one distance sensor is arranged on the top of the fixing support. The other distance sensor is arranged at the center of the top of the supporting base; the auxiliary measuring mechanism is located on one side of the thin film tightening mechanism, and a thin film winding mechanism is arranged on one side of the auxiliary measuring mechanism. According to the film thickness laser measuring device of the composite printing machine, the distance between fourth tightening rods is controlled, the tightening degree is adjusted, a film is tightened conveniently and kept horizontal, a distance sensor is fixed to the top of the film through a fixing support, and another distance sensor is arranged at the position, under the distance sensor, of the bottom of the film. The height of the fixing support is fixed, the distance sensor measures the distance between the distance sensor and the film through the laser detection probe, and the thickness of the film can be obtained.
Owner:JIANGSU XINWEIHUA PHARM PACKAGING CO LTD

An automated, three-dimensional storage and retrieval warehouse

The application discloses an automatic stereoscopic storage warehouse, which comprises a high-precision linear guide rail embedded in a column of a portal lifting guide frame; a horizontal conveying and taking platform is driven by a servo motor to drive a second chain, and the second chain drives a moving plate to move; and the conveying and taking platform is located between the portal lifting guide frames and is displaced up and down by the two symmetrical portal lifting guide frames. In the use process, a dynamic avoidance module calculates data of a radar and infrared distance sensors on both sides of the conveying and taking platform, thereby automatically monitoring a moving obstacle module, avoiding motion interference when the conveying and taking platform moves the moving plate of a storage layer out, avoiding collision accidents caused by the moving plate not being completely moved out of the storage layer, and avoiding damage of the plate; and according to cooperation of a path planning module and distribution of collected plate quality, the best storage position and the fastest processing time are obtained.
Owner:HENAN REAL ELECTRIC

Standard transformer substation environment-based automatic inspection four-foot robot dog

The invention relates to an automatic inspection four-legged robot dog based on a standard substation environment, which is applied to the field of robot dogs for inspection, and comprises a robot dog main body, the output end of a driving motor is connected with a thigh arm, the side surface of the robot dog main body is provided with a hydraulic push rod, and the tail end of the thigh arm is connected with a shank arm through a shaft; the surface of the shank arm is movably connected with the power end of the hydraulic push rod; distance sensors are installed at the positions, corresponding to the thigh arms and the shank arms, of the bottom of the robot dog body, a deformation supporting unit used for assisting the shank arms to conduct motion state switching is installed on the surface of the position, close to the foot end, of each shank arm, and the deformation supporting units and the hydraulic push rods are matched, and the inspection auxiliary system is used for recognizing road conditions; the robot dog performs targeted inspection state switching on the flat ground and the gravel ground, the robot body is kept horizontal through difference adjustment of the front hydraulic push rod and the rear hydraulic push rod when the robot dog climbs stairs, and V-shaped supporting is formed in combination with rotation of the rollers, so that stability is enhanced.
Owner:XINYUAN NETWORK TECH CO LTD

Square pipe fitting auxiliary lifting device, positioning system and perpendicularity checking method

The invention provides a square pipe fitting auxiliary lifting device, a positioning system and a perpendicularity checking method. The device comprises a clamping structure, a distance measuring sensor, an image collecting assembly and a reference part, the clamping structure comprises clamping plates attached to the surface of the square pipe fitting, and the clamping plates are used for fixing the auxiliary positioning device to the square pipe fitting; the distance measuring sensors are arranged on the sides, facing the embedded part, of the clamping plates and used for obtaining the distance between the clamping plates and the embedded part. The image acquisition assembly is arranged on the clamping plate and is used for acquiring a contour image of the square pipe fitting; the reference part is used for forming a distance with the square pipe fitting, the distance is used for being compared with a distance reference range, and the distance reference range is the distance range formed by the reference part and the square pipe fitting when the square pipe fitting is perpendicular to the embedded part. By means of the device, accurate positioning of the perpendicularity of the square pipe fitting and the embedded part can be achieved.
Owner:CHINA NUCLEAR IND FIFTH CONSTR CO LTD

Communication machine room inspection device and method based on computer vision

The invention belongs to the technical field of machine room inspection, and particularly discloses a communication machine room inspection device and method based on computer vision, and the device comprises an inspection vehicle, a buffer seat, a loading seat, a camera, an execution mechanism and an image processing system, the buffering seat is provided with mechanical anti-shake structures such as a sliding groove, a sliding block, a movable frame and a spring damper, and the influence of vehicle body vibration on image acquisition stability can be effectively reduced. The device further comprises functional components such as a laser distance sensor and a mechanical arm. The method comprises the steps of image acquisition, image comparison, abnormity identification, operation execution, pressure feedback control and the like, and can realize automatic abnormity identification, target positioning, intervention execution and alarm and report generation. The intelligent, automatic and anti-interference capabilities of communication machine room inspection are improved, and the system is suitable for high-frequency, large-scale and multi-type equipment inspection scenes.
Owner:ZHANGJIAKOU POWER SUPPLY COMPANY OF STATE GRID JINBEI ELECTRIC POWER COMPANY

Suspension type viscosity and density on-line measuring device

The utility model discloses a suspension type viscosity and density on-line measuring device. The device comprises a cavity, a rotating part, a reference rotor, a suspension rotor, a torsional elastic piece and a distance measuring sensor, the rotating part is fixedly connected to the cavity; the reference rotor is fixedly connected to the outer wall of the rotating shaft, synchronously moves along with the rotating shaft and is higher than the liquid level of measured liquid; a suspension detection end is arranged at the upper end of a suspension body of the suspension rotor, the suspension body is connected with the rotating shaft through a torsion elastic piece, the suspension body suspends in detected liquid, the suspension detection end is exposed out of the detected liquid, and the suspension rotor is driven by the rotating shaft to rotate; the distance measuring sensor fixed in the cavity measures the rotating speed of the reference rotor, the axial displacement of the suspension detection end and the phase difference between the reference rotor and the suspension rotor so as to calculate the viscosity and density of the liquid to be measured. The device has the effects of measuring the density and the viscosity of liquid in real time and being high in measurement precision.
Owner:SHENZHEN XIANBO TECH CO LTD

Rotary kiln calcining method based on annular air curtain sealing

The invention relates to the technical field of rotary kiln calcining equipment, in particular to a rotary kiln calcining method based on annular air curtain sealing, which comprises the following steps: S1, dynamic gap three-dimensional modeling: collecting a radial gap value between a kiln body flange end face and a static housing in real time through radial distance sensor groups uniformly distributed on the circumference; synchronously obtaining the axial displacement of the kiln body; constructing a dynamic gap three-dimensional topology model based on the angle distribution data of the radial gap value and the axial play vector; s2, generating a double-layer vortex air curtain; s3, dynamically regulating and controlling air curtain parameters; and S4, sealing efficiency closed-loop control is conducted, specifically, the escape dust concentration of the outer wall of the static housing is detected, and when the concentration exceeds the standard, the compensation coefficient of the reference flow velocity is increased according to the gradient, and the step S2 is executed again. The sealing effect of the rotary kiln is greatly improved by adopting a double-layer vortex air curtain sealing technology, dynamic gap modeling, air curtain parameter dynamic regulation and control and sealing efficiency closed-loop control.
Owner:JIAYUGUAN CHENGYU METAL MATERIAL CO LTD

Falling ball impact device for experiment

The invention relates to an experimental falling ball impact device which comprises a base and a lifting mechanism, the lifting mechanism comprises a lifting platform, a synchronous belt and a lifting servo motor, a transmission shaft of the lifting servo motor is in transmission connection with the synchronous belt, and the lifting platform is fixedly connected with the synchronous belt. The lifting platform is provided with an infrared distance sensor and a horizontal transverse mechanism, the lifting servo motor controls the lifting platform to move up and down, symmetrical intercepting mechanisms are arranged on baffles on the two sides of the base, and the horizontal transverse mechanism is located below the lifting platform. The horizontal transverse mechanism is provided with an X-direction servo motor, a Y-direction servo motor, an electromagnet and a laser drop point indicator, and the transverse mechanism is used for moving the electromagnet in the X direction and the Y direction. According to the device, the falling ball position and the falling ball height can be automatically adjusted, secondary falling balls can be intercepted, it is avoided that secondary impact influences experiment data, and the accuracy of the experiment data is guaranteed.
Owner:QINGYUAN CSG NEW ENERGY SAVING MATERIALS CO LTD +1

Oil film rigidity testing device based on single sliding block

The invention relates to an oil film rigidity testing device based on a single sliding block, and belongs to the technical field of hydrostatic guideway performance test.The oil film rigidity testing device comprises a supporting box, a rack and a stand column, the rack is arranged on the supporting box, the stand column is arranged on one side of the supporting box, a sliding groove is formed in the middle of the supporting box, and a testing assembly is arranged on the sliding groove; a sliding plate is arranged on one side of the stand column, a lifting hydraulic cylinder and a driving assembly are arranged at the top of the rack, the working end of the lifting hydraulic cylinder is arranged at the top of the sliding plate, the lifting hydraulic cylinder is used for driving the sliding plate to longitudinally slide on the stand column, a distance sensor is arranged on the sliding plate, and a temperature sensor is arranged on the testing assembly. An overturning assembly is arranged in the supporting box, the sliding plate drives the overturning assembly to move through a driving assembly, the overturning assembly is used for driving the testing assembly to rotate, and a push plate is arranged at one end of the sliding groove and used for driving the testing assembly to slide; the oil film rigidity detection device has the technical effect that the single sliding block detects the oil film rigidity in different directions.
Owner:BEIJING PROSPER PRECISION MACHINE TOOL CO LTD

Self-calibrating inspection system and method for inspecting items using it

A self-calibrating inspection system and a corresponding article inspection method are provided. The self-calibrating inspection system includes: an inspection device configured to visually inspect or measure an article placed on a carrier; a motion actuator on which the inspection device is mounted, the motion actuator being configured to move the inspection device relative to the carrier along a predetermined motion trajectory; a calibration member fixedly positioned relative to the carrier; a distance sensor fixedly positioned relative to the inspection device and configured to sense a first distance between the distance sensor and the calibration member during the movement of the inspection device by the motion actuator; and a controller communicating with the motion actuator and the distance sensor and configured to determine, based on the first distance, a deviation between the actual motion trajectory of the inspection device and the predetermined motion trajectory, and to control the motion actuator to move the inspection device along a path substantially consistent with the predetermined motion trajectory based on the deviation.
Owner:TYCO ELECTRONICS (SHANGHAI) CO LTD +2

Calibrating a three-dimensional sensor

An example method includes controlling a projecting subsystem of a distance sensor to project a projection pattern onto a target object, wherein the projection pattern comprises a plurality of points of light, controlling an imaging subsystem of the distance sensor to capture a first image of the projection pattern on the target object and an external camera having a fixed position to capture a second image of the projection pattern on the target object, calculating an image position of a first point of the plurality of points on an image sensor of the imaging subsystem, calculating a spatial position of the first point on the target object, based on the second image, and storing the image position and the spatial position together as calibration data for the distance sensor.
Owner:MAGIK EYE INC

Sitting posture monitoring desktop far image read-write device

The utility model discloses a desktop far image read-write device for sitting posture monitoring. The desktop far image read-write device comprises a far image optical system, a distance sensor, a controller and an output device. Wherein the distance sensor is arranged on the front side of the desktop remote image read-write device, faces the exit pupil position and is used for collecting the distance d between a user and the desktop remote image read-write device; and the controller is used for comparing the distance d between the user and the desktop remote image read-write equipment with the exit pupil distance range of the desktop remote image read-write equipment, and outputting prompt information outwards through the output module when the distance d between the user and the desktop remote image read-write equipment is not in the exit pupil distance range of the desktop remote image read-write equipment. The distance sensor is arranged on the front side of the desktop remote image read-write device, the distance d between the user and the desktop remote image read-write device is collected, the sitting posture of the user is monitored, and the myopia prevention and control effect of the user is enhanced.
Owner:BEIJING NEDPLUSAR DISPLAY TECH CO LTD

Protective device for safety of mining machinery

The invention discloses a protective device for safety of mining machinery, and relates to the technical field of mining equipment, in particular to a protective device for safety of mining machinery, which comprises a base, a rotating frame, a protective component and a supporting component, and a plurality of iron chisels used for being inserted underground are fixedly mounted on the lower surface of the base; the lower end of the rotating frame is hinged to one end of the base; and through the combination of multi-stage damping and elastic buffering, the absorption capacity to large impact force is greatly improved. When the impact force continuously acts to cause the first piston plate to move to a set distance, the distance sensor transmits a signal to the control panel, and the control panel starts the electromagnet, so that the magnetic particles in the magnetorheological fluid are orderly arranged in a solid-like state, the position of the piston assembly is locked, excessive rotation of the rotating frame is avoided, and the service life of the rotating frame is prolonged. Compared with a locking block clamping structure of an existing device, the locking block clamping structure has higher fixing reliability, the situation that the structure loses efficacy due to continuous impact is effectively prevented, and safety of mining machinery is guaranteed.
Owner:LUZHOU IND TECHNICAL SCHOOL

Circular Vibrating Screen Driven by Superconducting Motor and Its Usage Method

The present invention relates to the technical field of vibrating screens, and discloses a circular vibrating screen driven by a superconducting motor and a usage method. The circular vibrating screen driven by the superconducting motor includes a support base and a protective shell. Inside the protective shell, a stirring assembly and a displacement assembly are respectively provided. The displacement assembly is arranged below the stirring assembly. The stirring assembly includes a rotating ring. Four stirring plates arranged in a circumferential arrangement are hinged between the inner walls of the rotating ring. Two symmetrical torsion springs are provided between the stirring plates and the rotating ring. A first sliding groove is opened in the upper part of the front surface of the stirring plate, and a first pushing plate is slidably connected inside the first sliding groove. In the present invention, under the action of the distance sensor, the distance between the first pushing plate and the distance sensor can be detected in real time, and the materials accumulated at this time can be reflected according to the distance. Corresponding adjustments are made according to different accumulation degrees. When the first threshold is reached, the materials are diverted to pass through the first sieve mesh and the second aggregation ring simultaneously for screening, thereby improving the screening efficiency.
Owner:HENAN MECHANICAL & ELECTRICAL ENG COLLEGE +1

Laser cutting device and method for livestock ear tag

The invention discloses a laser cutting device and method for livestock ear tags, and belongs to the technical field of laser cutting. The laser cutting device comprises a supporting plate, a laser head and a control assembly are arranged above the supporting plate, the laser head is installed in the control assembly, and the control assembly is used for controlling the laser head to move in the X-axis direction and the Y-axis direction; a plurality of sets of photoelectric distance measuring sensors are installed outside the outer side of the laser head and evenly distributed on the outer side face of the laser head. According to the method, only a preset thickness is cut each time in a layer-by-layer cutting mode, so that heat generated by cutting each layer is relatively less, local overheating is avoided, a heat affected zone is reduced, the cutting quality is improved, in the cutting process, the temperature value of a cutting point is detected in real time through an infrared thermometer, and the cutting efficiency is improved. And the cutting power of the laser head is dynamically adjusted according to the difference value between the actual cutting temperature and the preset cutting temperature, and it is ensured that the cutting process is stable and efficient.
Owner:YANGZHONG HONGGUANG METAL PROD CO LTD