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107results about How to "Reduce targeting requirements" patented technology

Underwater object lifting device

InactiveCN102139750AConvenient and fast retractable operationReduce targeting requirementsVessel salvagingUnderwater equipmentManipulatorWinch
The invention relates to an underwater object lifting device. The invention is characterized in that the device comprises an integrated control console, an underwater winch and a lifting unit, wherein the integrated control console is connected with the underwater winch by a watertight cable; the underwater winch is connected with the lifting unit by an armored cable; the lifting unit comprises alifting main body; a central control device is arranged at the middle part of the lifting main body; the stem part and the stern part of the lifting main body are respectively provided with an image pickup device and a lighting device; both sides of the stern part of the lifting main body are provided with horizontal thrusters; a lifting hook is connected with the center of the bottom of the lifting main body by a steel cable; and the stem part of the lifting main body is provided with a manipulator and a lifting-hook hanging post. A submarine or an underwater mobile work station is taken as a carrying mother ship of the underwater lifting device; the integrated control console controls the underwater winch and the lifting unit to release and recycle target objects underwater; the underwater lifting device reduces the influence of stormy waves on lifting operation, improves the operation efficiency and is suitable for underwater hidden operation; in addition, the lifting unit is provided with the horizontal thrusters and vertical thrusters and has lower requirements on positioning the mother ship.
Owner:中国船舶重工集团公司第七〇二研究所

Welding production line with matched clamp

A welding production line with following fixture is composed of a conveying line, a master control cabinet, two lift units at both ends of said conveying line, several workstations arranged along said conveying line, a following welding fixture, robot welding station consisting of welding robot, control cabinet and power supply, a displacing machine, a lift unit for lifting said following welding fixture from conveying line to said displacing machine, and a fast clamping unit on said displacing machine.
Owner:CHONGQING ZONGSHEN INNOVATION TECH RES INST CO LTD

Replacement system and method for power battery box

The invention provides a replacement system and a replacement method for a power battery box and solves the problems of replacement adaptability, using of a battery rack, charging environment of a battery and rapid replacement of the battery box of an electric vehicle. The replacement system comprises a manipulator, the battery rack, a shuttle vehicle and a stacking machine, wherein the manipulator is used for loading and unloading the battery from the vehicle; the battery rack is used for storing and charging the battery box; the shuttle vehicle is positioned below the battery rack and is used for temporarily storing the battery required by the manipulator; the stacking machine is used for taking the battery from the shuttle vehicle and placing the battery on the battery rack; the rear part of the stacking machine is provided with a curtain wall; the curtain wall and a closed battery rack front panel have a sealing effect on the system together, so that the optimal battery charging temperature in the battery rack is ensured, the service life of the battery is prolonged and the problem of charging environment of the battery is well solved. In the replacement method, the battery box does not need to be rotated, so that the replacement efficiency of the battery box is improved. The replacement system has reasonable arrangement of parts, small occupied area, high working efficiency, small equipment maintenance amount and stronger universality.
Owner:BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD +1

Label capable of being labeled using laser without contact, production method and labeling method

The invention provides a label, comprising a backing layer, an anti-reflector plate layer which is positioned on one surface of the backing layer, and an adhesive layer which is positioned on the other surface of the backing layer and / or on the anti-reflector plate layer; wherein, at least one layer of the backing layer, the anti-reflector plate layer and the adhesive layer contains a laser absorbent. The invention also provides a manufacturing method of the label and a method for marking on the label by laser.
Owner:3M INNOVATIVE PROPERTIES CO

Continuous automatic truck loading and stacking system for material packages

ActiveCN108483052ARealization of continuous automatic loadingAdaptableStacking articlesLoading/unloadingHydraulic cylinderProduction line
The invention discloses a continuous automatic truck loading and stacking system for material packages. The continuous automatic truck loading and stacking system comprises a rail 1, a horizontal beltconveyor 31, a speed adjusting belt conveyor 4, a package shooting belt conveyor 5, a package transfer mechanism 6, an inclined belt conveyor 7, a stacking machine 8, a swinging translation hanging bracket 9, a lifting hanging bracket 10, a hydraulic cylinder 11, a transverse package pushing device 12, a moving package stopping device 13, related measurement control systems and a driving device.After a truck for loading the material packages enters the designated zone, the continuous automatic truck loading and stacking system automatically measures the size and the position of a compartmentof the truck and automatically adjusts the width and the position of the stacking machine according to the measurement result so that the automatic truck loading requirements can be met. The continuous automatic truck loading and stacking system can replace an existing manual truck loading system, is directly arranged on the downstream portion of a production line of a packing machine and can completely adapt to production of existing packing machines, and continuous automatic truck loading and stacking of the material packages is achieved. Due to the fact that the width and the position of the stacking machine in the continuous automatic truck loading and stacking system can be automatically adjusted, the continuous automatic truck loading and stacking system is high in truck type adaptability and is not high in truck positioning requirement, and in the truck loading process, the truck loading and stacking work of the material packages can be completed without moving the truck.
Owner:查道球

Suspended elevator

The present invention relates to suspended elevator, belongs to the field of conveyor technology, and is especially one kind of car body transferring elevator for car producing line. The suspended elevator has one frame, booms connected to the frame, stabilizing bar assemblies in the frame, electrically driven push rod assemblies connected to the stabilizing bar assemblies, movable rail assemblies mounted to the bottom of the frame, rail aligning mechanisms mounted on the fixed rail, sling opening and closing mechanism supports on the frame, and sling opening and closing mechanisms on the sling opening and closing mechanism supports. The present invention has compact and reasonable structure, relaxed locating requirement, great bearing capacity, low noise and other advantages.
Owner:MIRACLE AUTOMATION ENG CO LTD

Measuring method of virtual clamp

The invention relates to the technical field of measurement, in particular to a measuring method of a photoelectric instrument. The method comprises the following steps of: 1) putting one of the working pieces on a working platform, fixing, then using a camera to capture two lines on the working piece randomly, inputting the two lines into a computer, and constructing a reference line on a measuring plane of the computer so as to form a virtual clamp; 2) putting another measured working piece on the working platform, using the reference line on the formed measuring plane to align a corresponding line of the working piece, and forming upper clamping of the virtual clamp by the corresponding movement and / or rotation of the reference line on the measuring plane; and 3) using the position relation of a virtual focus and the reference line of a measuring lens, moving and capturing the points and lines of the working piece and then measurement can be carried out. The invention has convenient operation, fast measuring speed and high accuracy, reduces error measurement, improves measurement efficiency, simultaneously reduces the influence of the clamp on the working platform to the working piece, has no high requirements to the positioning of the working piece on the working platform and reduces mechanical error.
Owner:徐春云

Sieve pipe self-locking switch controller

The invention relates to a sieve pipe self-locking switch controller. The sieve pipe self-locking switch controller is mainly composed of a conical sliding rail connector, a movable stirring block, a spring pressing cap, a reset spring and a front guiding head. Two to six dovetail grooves evenly distributed in the circumferential direction of the axis are machined in a conical structure body of the conical sliding rail connector. The movable stirring block is of a round flaw structure, and T-shaped sliding rails are machined on the bottom face, arranged in the dovetail grooves of the conical sliding rail connector and are in sliding fit. A rod head is machined at the front end of the movable stirring block, the top end of the rod head makes contact with one end of the spring pressing cap, and the spring pressing cap is arranged on a shaft outer sleeve of the front guiding head and is in sliding fit. The reset spring is arranged between the spring pressing cap and the front guiding head shoulder part. The end of the front guiding head is a conical body. The sieve pipe self-locking switch controller is used in cooperation with a sand control sieve pipe with a self-locking switch, one or more sand control sieve pipes at the assigned position under a well can be controlled according to the actual needs and can be made to put into production or quit production, and accordingly the purposes of flow adjusting, water controlling and production system optimizing are achieved.
Owner:中石化石油工程技术服务有限公司 +2

Battery-replacement moving and carrying device capable of achieving floating without lateral force

The invention provides a battery-replacement moving and carrying device capable of achieving floating without lateral force. The battery-replacement moving and carrying device comprises a transverse moving and carrying body, a lifting table body, a fixed base plate, a floating base plate, floating column bodies and clamping mechanism bodies. The transverse moving and carrying body is used for providing driving force for transverse conveying of a battery assembly. The lifting table body is used for elevating the battery assembly on the floating base plate. The floating column bodies are used for floating and supporting the floating base plate so that the floating base plate can float vertically and horizontally relative to the fixed base plate. The clamping mechanism bodies are used for fixing the floating base plate so that the lateral force brought by the floating column bodies in the battery replacement process can be offset. The battery-replacement moving and carrying device is ingenious in structure and reasonable in design, the vertical-direction size of the moving and carrying device is reduced, stable rising and falling are achieved in the battery replacement process, and meanwhile the battery assembly is allowed to float in all directions; and the requirement for positioning of the device is lowered, the lateral force generated in the floating process is eliminated, unnecessary collisions of the battery assembly are avoided, the requirement of new energy vehicles for rapid battery replacement is met, and application and popularization are convenient.
Owner:BOZHON PRECISION IND TECH CO LTD

Lagrange Gaussian beam Gouy phase parameter measuring method

The invention relates to a Lagrange Gaussian beam Gouy phase parameter measuring method. In the prior art, an optical path structure is complicated, restriction from optical beam coherence is obtained and the measurement in an optical system with high sensitivity and high numerical aperture cannot be realized. According to the invention, the method comprises the following steps of: carrying out sector light shielding modulation on beam wave front by using wave front amplitude modulation technology of the Lagrange Gaussian beam; and selecting beam radial parameters as zero, wherein a circular ring shaped light spot with a gap is formed after beams are gathered; detecting the circular ring shaped light spot with the gap by using a near field optical technology, wherein azimuth angle parameter corresponding to the center of the gap is fundamental mode beam Gouy phase; and obtaining the Gouy phase of any Lagrange Gaussian beam in different spreading positions through simple calculation. The Lagrange Gaussian beam Gouy phase parameter measuring method provided by the invention has the characteristics of simplicity for realization, low requirement on structure positioning, high reliability, strong anti-interference performance, capability of realizing direct measurement with high sensitivity, capability of measuring the Gouy phase in the optical system with high numerical aperture, wide application range and the like.
Owner:CHINA JILIANG UNIV

Ectopic implantation valved stent system for treating tricuspid regurgitation

The invention discloses an ectopic implantation valved stent system for treating tricuspid regurgitation. The system comprises a stent, an artificial valve and a cover membrane, wherein the stent is in the shape of a cylindrical tube and provided with a grid structure, the artificial valve is sewn in the stent perpendicular to the axial direction of the stent, and the cover membrane covers at least part of the peripheral surface of the stent. The system is a valve system implanted through femoral vein. After the system is implanted in precava and / or postcava, the situation that tricuspid valve regurgitates into atrium, and then blood flows back to vena cava can be avoided, and then tricuspid regurgitation is treated. The stent system has the advantages that operation is easy, manufacturing process is simple and mature, and safety performance is high.
Owner:SHANGHAI HANYU MEDICAL TECH CO LTD

Chaining fanning strip for large-medium type motor and manufacturing method thereof

The invention provides a chaining segmental strip for large and middle scale electric machine and manufacturing method thereof, the chaining segmental strip comprises a segmental punching strip of complete round-shaped punching strip enclosed by a plurality of strips, a seam is dovetail-shaped arranged between each two neighboring segmental strips. The method comprises calculating number of slot of each segmental strip, blanking, splicing, and punching. The invention can effectively control radial and tangential displacements between the segmental strips, and the shape and the number of the slot are not constrained, the manufacturing method is simple, thereby reducing the labor intensity.
Owner:SHANGHAI NANYANG ELECTRICAL MACHINERY

Path planning method, system and equipment for intelligent equipment as well as readable storage medium

The invention discloses a path planning method, system and equipment for intelligent equipment as well as a readable storage medium. The path planning method comprises the following steps: acquiring point cloud data of all the obstacles in a detection range of the intelligent equipment by virtue of a detection sensor; dividing a blank area containing no obstacle in the detection range into multiple sub blocks, wherein the area of each sub block is not smaller than occupied area of the intelligent equipment; for each sub block, detecting an operating environment of each sub block according to the point cloud data, and obtaining an environment detection value of the operating environment of each sub block; selecting the sub block with the environment detection value meeting preset conditionsas a target sub block, and taking a position of the target sub block as a target shifting position of the intelligent equipment. The method disclosed by the invention acquires the point cloud data ofthe obstacles in real time by virtue of the detection sensor and divides the blank area in the detection range, real-time operating environment detection on each sub block is performed, and further the target shifting position of the intelligent equipment is selected by virtue of the environment detection value.
Owner:BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD

High-concentration pressure feeding continuous in-bulk system

ActiveCN107572270AGuaranteed full rateGuaranteed loading speedBulk conveyorsLoading/unloadingHigh concentrationFilling rate
The invention relates to a high-concentration pressure feeding continuous in-bulk system which comprises a feeding device and a dust-extraction unit. The feeding device comprises a high pressure sending tank (1), an air compressor (2), a pressure feeding pipe and a tank car inlet cover (9) at the top of a carriage of a flour in-bulk tank car; and one end of the pressure feeding pipe is connected with the high pressure sending tank (1) and the air compressor (2), the other end of the pressure feeding pipe is provided with a double-way crossed inclined type feeding pipe assembly, the double-waycrossed inclined type feeding pipe assembly extends into the carriage of the flour in-bulk tank car through the tank car inlet cover (9) and is close to the top position in the carriage of the flour in-bulk tank car. Compared with the prior art, the high-concentration pressure feeding continuous in-bulk system has the beneficial effects that high-concentration powder pressure feeding manner is adopted, loading is efficient, the filling rate is high, gas consumption is small, material and has separation is easy, the flour in-bulk tank car does not need to be moved secondarily, the number of middle links of loading is greatly reduced, the loading time is greatly saved, and operation safety is greatly improved.
Owner:WUXI DADONG GRAIN ENG TECH CO LTD

Lotus-root-shaped guide locator

The invention provides a lotus-root-shaped guide locator and belongs to a medical instrument. The lotus-root-shaped guide locator mainly solves the technical problems that radiation injures operators and the amount of radiation on patients is excessively large in the existing guide pin location technology. According to the technical scheme, the lotus-root-shaped guide locator is characterized by comprising a cylindrical body (1). One end of the cylindrical body (1) is the holding end, and the other end of the cylindrical body (1) is the locating end extending into a human body. The portion, at the port of the locating end, of a through hole is provided with a locating ring (3). The lotus-root-shaped guide locator is mainly applied to guide and location of percutaneous puncture of a guide pin.
Owner:贺新宁

Suspension type laying and recycling device for AUV in wing-body fusion glider

The invention relates to a suspension type laying and recovery device for an AUV in a wing-body fusion glider, and the laying and recovery of the AUV are realized based on the opening and closing of a suspension device push rod controlled by an electromagnetic switch by combining the entering and exiting of an AUV upper hanging rod in and out of a suspension device. In order to fix the AUV in a glider groove, a locking device is designed based on a damping spring, the locking device is composed of a rigid claw with double lugs, the damping spring, a supporting rod, a rotating shaft and the like, and the AUV is clamped and fixed through counter-acting force which is provided by the damping spring during compression and acts on the rigid claw. According to the device, not only can the flat AUV be recovered, but also other AUVs with any shape and size, which are provided with hanging rods, can be recovered, and the AUV can enter and leave the glider in any posture, so that the requirements on the appearance size, the guiding and positioning precision and the posture angle of the AUV are greatly reduced.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

3D printing equipment

The invention relates to 3D printing equipment. The 3D printing equipment comprises a supporting frame, a printing assembly and a working box mechanism, wherein the printing assembly and the working box mechanism are integrally arranged on the supporting frame; the printing assembly comprises symmetrically-arranged discharging guide rails, a plurality of printing guide rails, a plurality of discharging mechanisms and a plurality of printing mechanisms, wherein the printing guide rails and the discharging mechanisms are arranged between the two discharging guide rails correspondingly, and one printing mechanism is arranged on at least one printing guide rail in a sliding mode; the two discharging guide rails are arranged on the two symmetrical sides of the supporting frame; and the workingbox mechanism comprises a working box and a jacking piece which are integrally arranged, wherein the jacking piece is used for jacking a bottom plate of the working box to ascend and descend in the vertical direction, and the working box and the jacking piece are movably arranged inside the supporting frame in a penetrating mode. The 3D printing equipment has the advantages of high printing efficiency and high product precision.
Owner:KOCEL INTELLIGENT FOUNDRY IND INNOVATION CENT CO LTD

Parking information broadcasting system based on community short messages

The invention discloses a parking information broadcasting system based on community short messages, which comprises a signaling monitoring module, a positioning module, a geographic information system module, a community short message module, a parking information acquisition module and the like. The parking information broadcasting system detects the signaling generated at a specific interface of a mobile network by a mobile terminal of a user through a signaling monitoring system, captures and filters signaling relevant to the user position, acquires the position information, contained in the signaling, of a community where the user is located, combines with a geographic information system, and maps the information to a logic area of the user; and simultaneously, the system acquires the parking information, matches the position of the parking information with the community, and broadcasts the parking information to users belonging to communities of the same area through modes of community short messages and the like. The parking information broadcasting system detects the mobile signaling of the users, converts the mobile signaling into the geographic area information, and broadcasts the parking information through the community short message mode, and accordingly provides parking information broadcasting business based on signaling monitoring for the users.
Owner:SHANGHAI BOLU INFORMATION TECH

Method for discriminating vehicle colors based on convolution neural network model

The embodiment of the invention discloses a method for discriminating vehicle colors based on a convolution neural network model, and the method comprises the steps: obtaining an image of a vehicle; recognizing the license plate information in the vehicle image, wherein the license plate information comprises the length, width and position of a license plate; determining a vehicle head region and a vehicle head image of a vehicle head region according to the information of the license plate; converting the vehicle head image into an image at a YUV format, and obtaining a vehicle head YUV image; extracting Y-component data, U-component data and V-component data from the vehicle head YUV image, carrying out the recombination of the Y-component data, U-component data and V-component data, and obtaining a vehicle head YUYV image in a preset size; training the convolution neural network model; inputting the vehicle head YUYV image into the convolution neural network model; and determining the color of the head of a vehicle according to an output result of the convolution neural network model. The embodiment of the invention provides a method for recognizing vehicle colors based on deep learning.
Owner:SHENZHEN JIESHUN SCI & TECH IND

Multipurpose magnetic sensitive immunoassay micro-fluidic chip and using method thereof

The invention provides a multipurpose magnetic sensitive immunoassay micro-fluidic chip and a using method thereof. The design that a magnetic sensitive biosensor chip is embedded outside the upper cover of the micro-fluidic chip is adopted, the overall structure is simplified, and the positioning and assembling precision requirements of the magnetic sensitive biosensor chip and the micro-fluidicchip are lowered; by adopting a mode of externally embedding the magnetic sensitive biosensor chip, the magnetic sensitive biosensor chip is in direct contact with a reagent, the contact between a detection circuit and the biological reagent is reduced, the interference is reduced, and the accuracy of a result is improved; a mode of externally embedding a magnetic sensitive biosensor chip is adopted, the magnetic sensitive biosensor chip is convenient to mount and dismount, the magnetic sensitive biosensor chip is convenient to replace after being used, the same micro-fluidic chip can be repeatedly used or used for detection of various different purposes conveniently, and the cost of the micro-fluidic chip is generally obviously higher than that of a magnetic sensitive biosensor, so that the cost can be greatly reduced by repeated use of the micro-fluidic chip.
Owner:XI AN JIAOTONG UNIV

Creel following system

The invention relates to a following system, in particular to a creel following system. The creel following system is used for solving the problems that an existing gear and rack transmission following system is high in cost and poor in drive force and a loop chain drive following system is low in movement precision, poor in rapid responsiveness and low in running speed. According to the creel following system, a ground track assembly is horizontally arranged, a walking mechanism is directly arranged on the ground track assembly in a striding manner, a drive mechanism is arranged on the walking mechanism, and a creel is arranged on the walking mechanism. Compared with gear and rack transmission with very high requirements for positioning and guiding, single-chain transmission adopts a three-wheel layout structure form, guide chain wheels on the two sides are in charge of guiding and axially positioning chains, the requirement of drive chain wheels for guiding and positioning is very low, and therefore the cost of single-chain transmission is far lower than that of gear and rack transmission. According to the three-wheel layout structure form, the number of teeth of the chain wheelsparticipating in driving is relatively large, and therefore the drive capability of single-chain transmission is far higher than that of gear and rack transmission. The creel following system is usedfor winding composite materials.
Owner:HARBIN COMPOSITE EQUIP

Dynamic shaft hole assembling device and method based on multi-camera visual servo

PendingCN112548527AOvercoming the problem of dynamic position uncertaintyAvoid occlusionProgramme-controlled manipulatorMetal working apparatusLinear motionVisual servoing
The invention discloses a dynamic shaft hole assembling device and method based on multi-camera visual servo, and belongs to the field of mechatronics. The dynamic shaft hole assembling device comprises a mechanical part and a control part, wherein the mechanical part comprises an operation platform, an assembly robot, a tool flange, a driving shaft support, a driving shaft, a camera holder, a linear guide rail, an assembling hole, an assembling platform and a tripod; the assembly robot and the linear guide rail are fixed to the operation platform; the linear guide rail can drive the assembling platform to do linear motion, and the assembling platform can drive a to-be-assembled hole to do linear motion; and the control part comprises a main control computer, a robot controller and depth cameras. According to the dynamic shaft hole assembling device, the position deviation of the moving assembling hole and the driving shaft can be automatically recognized, and the position deviation isautomatically adjusted by means of a visual servo controller, so that dynamic shaft hole assembling of the moving assembling hole is achieved, and more efficient automatic assembling can be achieved.
Owner:扬州舞指芯创智能科技有限公司

Repair device for preventing valve regurgitation

The invention relates to the field of medical instruments, in particular to a repair device for preventing valve regurgitation. The device comprises: a mounting bracket; and a single anti-regurgitation leaflet prosthesis for replacing the function of a single autologous leaflet, wherein one end of the single anti-regurgitation leaflet prosthesis is fixed on the mounting bracket. The repair device only replaces a single valve leaflet with a problem, the original functions of the remaining part of the autologous valve leaflet are reserved, meanwhile, the shape of an autologous valve ring is not changed, damage to intracardiac tissue is small, meanwhile, the implantation amount of an implant is small, and irritation is small.
Owner:NINGBO JENSCARE BIOTECHNOLOGY CO LTD

Supporting stand column for foundation pit and construction method of supporting stand column

The invention discloses a supporting stand column for a foundation pit and a construction method of the supporting stand column. The construction method comprises the following steps of: 1, preparing a steel tube (21) and a tapered base (22), wherein the lower port of the steel tube (21) is fixedly connected with the upper port of the tapered base (22) in a sealing manner so that the steel tube (21) and the tapered base (22) are matched with each other to form an insertion part (20), and an inner hole of the steel tube (21) and an upward tapered cavity of the tapered base (22) are matched to form an inner cavity (23); 2, drilling and pouring concrete so as to form a caisson pile (10); 3, inserting the insertion part (20) before the caisson pile (10) is condensed finally and inserting the lower part of the insertion part (20) into the caisson pile (10); and 4, pouring concrete into the inner cavity (23) of the insertion part (20).
Owner:厦门市政城市开发建设有限公司 +1

Butt joint device for intelligent mechanical hand and its butting method

InactiveCN100421884CHigh positioning accuracy requirementsIncrease manufacturing costProgramme-controlled manipulatorSemi openButt joint
The invention relates to a connector of intelligent mechanical hand and relative method, wherein it comprises a connecting part, a flexible positioning part and a base; the connecting part has rectangular pyramid guider, locking and unlocking elements; the connecting part is connected to connecting arm above and connecting claw under; the connecting part via the clamp groove on the claw sheath is fixed on the flexible positioning part; the connecting part is surrounded with a base with semi-open square with mechanical connection. When user takes and releases claws, the positioning element and the rectangular-pyramid guider can realize successful guiding and positioning. The invention is driven by motor, of three-freedom intelligent mechanical hand, with compact structure.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

External thread detection method based on machine vision and real-time detection system

The invention discloses an external thread detection method based on machine vision and a real-time detection system. The external thread detection method comprises the following steps that S1, an image is calibrated by using a standard grating; S2, a judgment standard of the thread screwing-in property is determined by using the thread tolerance requirement and system learning data; S3, linear detection is carried out by utilizing a rapid Hough transformation algorithm designed for external thread detection; and S4, a measurement report and a process control statistical chart are generated. Benefited from the globality and robustness of Hough transformation, the detection method and the real-time detection system have low requirements on image quality and positioning of a detected piece,have good adaptability and high detection reliability; various detected piece sizes and tolerance requirements are met through calibration steps and advanced Hough transformation; and through technical means such as table look-up method calculation, cumulative range reduction, cumulative array resolution advancement, the calculation amount is reduced, and real-time detection and process control can be realized.
Owner:上海红马饲料有限公司

Terminal node emission signal Doppler pre-compensation method based on LoRa system

The invention discloses a terminal node emission signal Doppler pre-compensation method based on a LoRa system, and the method comprises the steps: firstly analyzing a distribution function and probability density of the relative distance between a terminal and a satellite according to the distribution probability density of the terminal in an area; calculating the probability density of Doppler frequency shift of the terminal and the satellite according to satellite orbit parameters and a Doppler frequency shift calculation formula; secondly, establishing a Doppler frequency shift pre-compensation optimization problem for the randomly distributed terminal pre-compensation model in the region, and solving an optimal pre-compensation value of the system according to the optimization problemand a probability density function of Doppler frequency shift of the terminal and the satellite; to solve the problem of inter-carrier interference caused by a Doppler effect between a low-orbit satellite and unauthorized blind sending terminals distributed in a certain region range, theoretically deriving a relationship between a probability density function of distribution of the terminals in acertain region and average Doppler frequency shift of a system; the invention further provides a terminal node Doppler pre-compensation method, and the problem of inter-carrier interference of different sub-channel terminals in the system is relieved.
Owner:NANJING UNIV OF POSTS & TELECOMM +1
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