108results about How to "Avoid using effects" patented technology

The embodiment of the invention provides a computing resource configuration method and device of FPGA equipment and the FPGA equipment. The method comprises the steps that a heterogeneous query execution plan is generated according to a query request of a user, and the heterogeneous query plan comprises heterogeneous operators and non-heterogeneous operators; and determining a first number of resource blocks required to be configured for executing the heterogeneous operator based on the calculation throughput for processing a non-heterogeneous operator adjacent to the heterogeneous operator and the calculation throughput which can be provided by a single resource block in a programmable array logic FPGA (Field Programmable Gate Array) device. Through the embodiment of the invention, the problems that the throughput of the FPGA equipment is not matched with the calculation throughput of the CPU and the resources of the FPGA equipment cannot be reasonably utilized in the current dynamic configuration scheme in the related technology are solved, and the effect of ensuring that the resources of the FPGA equipment are reasonably utilized in the query acceleration process of the database is achieved.

The invention provides an edge computing resource allocation method and system based on multi-objective optimization, and relates to the field of data processing, and the method comprises the steps: determining the resource demand feature of each unmanned retail store and the resource demand association feature between any two unmanned retail stores according to the historical computing resource demand information of a plurality of unmanned retail stores, determining an edge calculation layout scheme, and setting a plurality of edge calculation devices; predicting future computing resource demands of the plurality of unmanned retail stores according to the resource demand feature of each unmanned retail store, the resource demand association feature between any two unmanned retail stores and the demand prediction auxiliary information; acquiring resource allocation auxiliary information; according to the method, the edge computing resource allocation scheme is determined according to the future computing resource demands and the resource allocation auxiliary information of the unmanned retail stores, the edge computing resources are allocated to the unmanned retail stores, and the method has the advantage of improving the flexibility of edge computing resource allocation in an unmanned retail scene.

The invention provides a control method of a compressor system, the compressor system and an air conditioner, and according to the control method of the compressor system, after the power demand change is detected, the target compressor is intelligently determined and started by combining the current power demand data and the power range data of each compressor. And then, after the target compressor operates for a period of time, real-time operation data of the target compressor are obtained, the target compressor is adjusted according to a preset control strategy, and load balance between the compressors is achieved. According to the method, the running state of the compressor is dynamically optimized by comprehensively utilizing real-time and historical running data, excessive use and frequent start and stop of some compressors are avoided, mechanical abrasion and energy consumption are remarkably reduced, and therefore the service life of the whole compressor system is effectively prolonged.

The invention discloses a self-service rental vehicle intelligent scheduling and dynamic battery distribution method, system and device and a storage medium. The self-service rental vehicle intelligent scheduling and dynamic battery distribution method comprises the following steps: S1, predicting a battery demand of a rental network in a future set time period through a linear regression model, and feeding back a prediction result to a cloud scheduling platform; s2, a leasing user requests to lease at a leasing network through a user side application program; s3, the cloud scheduling platform extracts the inventory number information of the lease network in the S2; s4, the cloud scheduling platform continues to extract the historical lease information of the lease user in the S2; s5, the cloud scheduling platform performs judgment through a linear regression model in combination with the detailed information of the batteries and the vehicles in the renting network in the S3 and the historical renting information of the renting users in the S4; and S6, the cloud scheduling platform notifies the battery replacement cabinet system to open a corresponding battery compartment door. The method has the advantages of intelligent scheduling and distribution, improved distribution efficiency, prolonged battery life and the like.

The invention provides a privacy protection method based on computing migration and AI behavior trajectory analysis, and relates to the technical field of privacy protection of the Internet of Things. According to the method, a privacy label is bound to target data, an AI behavior track fingerprint is generated in each AI processing stage, and matching verification is performed on the AI behavior track fingerprint and the privacy label, so that dynamic access control and security audit among terminal equipment, edge nodes and a cloud are realized. On one hand, data can be effectively prevented from being stolen or tampered in the migration process through an encryption transmission and fingerprint verification mechanism; and on the other hand, the fingerprint and label information can be selectively stored in the block chain or the alliance chain side chain, so that the tamper-proofing performance and the distributed credibility of the audit record can be enhanced. The method is suitable for various AI application scenes, the risk of unauthorized calling and sensitive information leakage can be reduced, and the traceability and safety of the whole data processing process are improved.

The invention provides a slope cropland fertilizing device and method, belongs to the technical field of fertilizing, and aims to solve the problem that a fertilizing device special for slope cropland is lacked in the prior art. Comprising a vehicle body, a chemical fertilizer box, a fertilizer distributor, a mixer, a fertilization angle adjusting assembly and a fertilization gun, a power device is arranged on the vehicle body, the vehicle body is driven by the power device to advance, and a handrail is fixedly arranged on the back of the vehicle body; the chemical fertilizer boxes are symmetrically and fixedly arranged on the two sides of the vehicle body, through holes are formed in the bottoms of the chemical fertilizer boxes, the through holes in the bottoms of the chemical fertilizer boxes are communicated with the fertilizer distributors, and the fertilizer distributors are used for quantitatively measuring chemical fertilizers; the bottom of the fertilizer distributor is communicated with the mixer; the fertilization angle adjusting assembly is arranged at the bottom of the vehicle body; the fertilization angle adjusting assembly is used for adjusting the fertilization angle; the fertilizing gun is mounted on the fertilizing angle adjusting assembly.

The utility model discloses a skin protecting and supporting device of a traditional Chinese medicine external treatment box, which comprises a connecting containing cylinder which is of an integral structure and is made of elastic materials, and an external expansion cover positioned at the lower end of the connecting containing cylinder. An upper protruding ring, an annular groove, an annular side wall and a moxibustion therapy box supporting ring are sequentially machined on the inner wall of the connecting containing cylinder from top to bottom. The inner diameter of the upper protruding ring is smaller than that of the annular side wall, the inner diameter of the annular side wall is smaller than that of the annular groove, and the inner diameter of the treatment box supporting ring is smaller than that of the annular side wall. The outer edge of the outer expansion cover is located on the outer side of the outer wall of the connecting containing cylinder and is lower than the inner edge. By means of the device, the traditional Chinese medicine external treatment medicine cake box is fixed to the lower side of the cylinder bottom plate, the device has the advantage of being convenient to disassemble and assemble, and electromagnetic interference cannot be generated on a storage communication element; a skin protecting and supporting device is additionally arranged between the moxibustion fumigation traditional Chinese medicine external treatment device and the skin at the body acupoints, and conversion of moxibustion therapy modes can be achieved.

The invention relates to an AI-based CDN resource intelligent scheduling cost optimization method and device. Obtaining the current resource use condition of each resource node in the distribution network and the cost strategy of each resource affiliation party to which each resource node belongs; adopting an AI cost strategy model to analyze an estimated resource demand required by a demand side in a prediction time period, a current resource use condition of each resource node and a cost strategy of each resource affiliation side to which each resource node belongs, and obtaining a target node selected by the AI cost model from each resource node; and providing corresponding resources for the demand side in the prediction time period by adopting the target node.

The embodiment of the invention provides a hard disk fault prediction method and device, equipment and a storage medium. The method comprises the steps of obtaining S.M.A.R.T. Data of a local to-be-predicted hard disk of a data center; performing dimension reduction processing on the S.M.A.R.T. Data of the to-be-predicted hard disk based on a principal component analysis method to obtain preprocessed S.M.A.R.T. Data of the to-be-predicted hard disk; the preprocessed S.M.A.R.T. Data of the to-be-predicted hard disk is input into a predetermined hard disk fault prediction model, a hard disk prediction result for the S.M.A.R.T. Data of the to-be-predicted hard disk is obtained, the hard disk fault prediction model is obtained through training of a long-short-term memory-converter model, and the S.M.A.R.T. Data of the to-be-predicted hard disk is obtained through training of the long-short-term memory-converter model. The hard disk prediction result comprises the health state and the remaining available life of the hard disk. By using the method, the long and short term memory-converter model can analyze the time domain features and sequence features of the hard disk S.M.A.R.T. Data in parallel under the condition of no mutual influence, the purpose of improving the hard disk fault prediction precision is achieved, the calculation efficiency is improved, the production operation and maintenance work is assisted, and the operation and maintenance cost is reduced.

The invention relates to the technical field of 3D printing, in particular to a middle frame forming method of a display device, a display device manufacturing method and a printing device. The middle frame forming method of the display device comprises the steps that a printing base body is provided and comprises a curved-surface back plate or a plane back plate, a display module layer and a cover plate which are arranged in a laminated mode; the edge of the display module layer and the edge of the cover plate are inwards retracted relative to the edge of the back plate; the radian of the printing substrate in the edge area is larger than that in the non-edge area; printing a middle frame material in the edge area to form a middle frame; a five-axis linkage printing device capable of adjusting the position and the orientation angle of a printing head is used, and a first anti-overflow wall and a second anti-overflow wall are formed on the edge of the side, away from the center of a printing base body, in an edge area and the edge of the side, close to the center position of the printing base body, in the edge area in sequence. The printing requirements of different curved-surface middle frames can be flexibly met.

The invention discloses an intelligent charging device and system based on block chain connection and a charging method. The intelligent charging device comprises a plurality of charging piles and a to-be-charged vehicle. Any one of the plurality of charging piles is used for charging the to-be-charged vehicle; and each charging pile in the plurality of charging piles establishes a communication link with two adjacent charging piles arranged according to a predetermined sequence so as to form an annular communication network. Besides, compared with the prior art, the intelligent charging method based on block chain connection can improve the charging efficiency, guarantee the data security, optimize the resource allocation and improve the user experience. In this way, the to-be-charged vehicle can obtain state information of common and surrounding charging piles, the charging piles can intelligently adjust charging strategies, the charging process is transparent and traceable, and convenient, safe and efficient charging services are provided for users.

The invention discloses a mine vehicle scheduling method, device and equipment and a storage medium. Comprising the steps of performing production configuration for a current working condition, and obtaining working condition related data based on configuration information; determining the state of each excavator and the state of each mine truck according to the working condition related data; and determining the working condition of the current working condition according to the state of each excavator and the state of each mine truck, and dispatching the mine truck based on the working condition. By determining the states of the excavator and the mine truck, reasonable allocation of vehicle resources is facilitated, idling or overuse of vehicles is avoided, optimal utilization of resources is achieved, production arrangement can be more suitable for the actual situation, production delay and resource waste caused by unreasonable configuration are reduced, and therefore the overall production efficiency of a mine is improved. And clear and accurate working condition and vehicle state information can be provided for mine managers by determining the working condition, so that the mine managers can make reasonable vehicle scheduling and management decisions, and the operation management level of the mine is further improved.

The invention discloses a vehicle hub threaded hole size automatic detection device, and relates to the technical field of detection equipment, the vehicle hub threaded hole size automatic detection device comprises a base and a hub member, the top of the base is rotatably connected with a rotating disc, the axis of one side of the rotating disc is provided with a detection assembly, and the outer side of the detection assembly is provided with a clamping block for clamping and fixing the hub member. According to the automatic detection equipment for the size of the threaded hole of the vehicle hub, by introducing an alarm lamp and a circuit closing mechanism, when the size of the threaded hole of the hub does not meet a preset standard, a movable rod moves to an inclined area, so that a connecting copper sheet is in contact with a fixed copper sheet, a closed circuit is formed, and the alarm lamp is activated; the real-time alarm function can find and process unqualified hub parts in time, and the problem in the subsequent assembly or use process caused by the unqualified size of the threaded hole is avoided.

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.

The invention discloses a sowing, soil turning and sterilizing device for vegetable planting, and relates to the technical field of vegetable planting equipment.The sowing, soil turning and sterilizing device is characterized in that a piston linearly moves back and forth in a pesticide storage pipe, so that pesticide liquid is sprayed on the just turned land through an extrusion spray head, and the pesticide liquid can be sprayed out with uniform pressure; the squeezing nozzles can uniformly spray liquid medicine on the surface of soil in an atomized form, waste and overuse of the liquid medicine are avoided, it can be ensured that the liquid medicine fully covers a target area, the utilization rate of the liquid medicine is increased, a healthy growth environment can be provided for vegetables, the liquid medicine can be sprayed on the surface of the turned soil at the first time, and the soil surface is protected. The soil conditioner can permeate into the soil, further improves the soil structure, facilitates the acceleration of decomposition of organic matters and release of nutrients, facilitates the normal growth and development of plants in a severe environment, and improves the yield and quality of crops.

The invention discloses a full-hydraulic crawler-type orchard plant protection robot and a control method thereof. The robot comprises a crawler chassis system, a plant protection device, a power system, a hydraulic transmission system and a control system, and the crawler chassis system is used for walking; the plant protection device is used for protecting plants; the power system is used for providing power for the crawler chassis system and the plant protection device; the hydraulic transmission system is used for transmitting power of the power system to the crawler chassis system and the plant protection device; and the control system is used for monitoring the environment, controlling the hydraulic transmission system, driving the crawler chassis system to walk according to a planned path and driving the plant protection device to perform plant protection according to a preset target. By using the robot for operation, the labor intensity of agricultural operation personnel is greatly reduced, effective separation of people and pesticide is realized, and the body health of the operation personnel is guaranteed.

The invention discloses a task scheduling method and device based on reinforcement learning, a medium and a product, and relates to the technical field of computers, and the method comprises the steps: determining a task scheduling action of a current time step according to a current action empirical value table and a preset scheduling constraint condition; updating the current system environment information and the current task load information of the embedded operating system based on the current reward information after the embedded operating system executes the task scheduling action; and based on the current system environment information, the current task load information and the current reward information, updating an empirical value in the current action empirical value table, and skipping to the step of determining the task scheduling action of the current time step according to the current action empirical value table and a preset scheduling constraint condition, and executing the task until the target task is scheduled to the target processor core meeting the preset condition. Tasks can be accurately allocated to appropriate hardware resources, and idle or overuse of the resources is avoided.

The utility model discloses battery pack detection equipment. The battery pack detection equipment comprises an equipment shell, a direct current gun head is arranged at the head end of the equipment shell and used for being inserted into a charging port of a vehicle. The detection circuit board is arranged in the equipment shell, and the detection circuit board is used for detecting a battery pack; and the insulation detection module is arranged on the detection circuit board and is used for isolating leakage current. According to the utility model, after the direct current gun head is inserted into the interface of the battery pack, the battery pack can communicate with the sampling plate, and the sampling plate feeds back the collected data to the detection circuit board electrically connected with the sampling plate so as to detect the fault of the battery pack. And meanwhile, the insulation detection module is also arranged on the detection circuit board, so that when dangerous situations such as electric leakage, short circuit and the like occur, the insulation detection module can avoid damage to a human body or equipment or use influence caused by electric leakage.

The invention discloses a computing power resource optimization method and system based on an AI large model and a storage medium, and relates to the technical field of computing power resource regulation and control optimization, and the method comprises the following steps: collecting task sample data of a computer processing task, and carrying out the data preprocessing; constructing a task processing time prediction model, and predicting the time length required by the computer to process the task to obtain task time length information; constructing a task processing progress evaluation method, and calculating and evaluating the task processing progress of the computer to obtain task progress information; based on the task duration information and the task progress information, dynamically adjusting and optimizing the computing power resource in the process of processing the task by the computer; the method is used for solving the problem that the existing computing power resource regulation and control optimization technology cannot accurately evaluate the task progress by using multi-dimensional data while predicting the task processing time, so that the computing power resource is dynamically regulated and optimized according to the real-time change of the task progress in the task processing process.

The utility model relates to the technical field of pipeline welding seam detection equipment, and discloses ultrasonic equipment for pressure pipeline welding seam detection, which comprises an ultrasonic detector, a cable is fixedly connected to the side wall of the ultrasonic detector, an ultrasonic probe is arranged at one end of the cable, and an adjusting assembly is arranged at the bottom of the ultrasonic detector. A winding assembly is arranged on the side wall of the ultrasonic detector; the adjusting assembly comprises a bottom plate, the side wall of the ultrasonic detector is rotatably connected to the interior of the bottom plate, the side wall of the bottom plate is fixedly connected with a motor, and the output end of the motor is fixedly connected with a connecting rod. The bottom plate can be adsorbed on a pipeline through the electromagnet, the motor drives the connecting rod to rotate, the worm drives the worm gear to rotate, then the screw rod rotates, the sliding block slides to push the rotating strip to rotate, the ultrasonic detector rotates, and the effect that the ultrasonic detector is erected is achieved. And meanwhile, the supporting effect of equipment is improved.

The front windshield washer comprises a nozzle assembly, a liquid conveying assembly and a heating device used for heating the nozzle assembly, the liquid conveying assembly is used for outputting washing agents to the nozzle assembly, the nozzle assembly is used for spraying the washing agents out of front windshield glass, the liquid conveying assembly comprises a second pipe part, and the second pipe part comprises a first pipe part and a second pipe part. A one-way valve device used for preventing the detergent from flowing back from the nozzle assembly is arranged in the second pipe part, and the heating device is installed on the nozzle assembly. According to the front windshield glass washer, the nozzle is melted and defrosted through the heating device located on the nozzle assembly, inconvenience in use and potential safety hazards caused by nozzle blockage are effectively prevented, and detergent backflow caused by nozzle blockage or other reasons is prevented through a one-way valve device in the liquid conveying assembly. And the operation stability of the front windshield glass washer is further improved.

The invention belongs to the technical field of dibromohydantoin production, and particularly provides a dibromohydantoin synthesis method which comprises the following steps: S1, preparing a raw material aqueous solution, namely respectively mixing dimethyl hydantoin, sodium bromide and liquid caustic soda NaOH with deionized water to form a dimethyl hydantoin aqueous solution, a sodium bromide aqueous solution and a liquid caustic soda NaOH aqueous solution; s2, premixing the raw material aqueous solution, namely mixing the aqueous solution of dimethyl hydantoin, sodium bromide and caustic soda liquid NaOH prepared in S1 to obtain a premix; s3, electrochemical in-situ bromination reaction: introducing the premix into a micro-channel reactor provided with an electrolysis electrode, and applying current to the premix to obtain a dibromohydantoin initial solution; and S4, crystallizing, separating and drying the product, carrying out cooling crystallization through a three-stage stepped cooling method to obtain a dibromohydantoin crystal, carrying out centrifugal separation to obtain a dibromohydantoin wet product, and then drying to obtain a dibromohydantoin finished product. The method can improve the generation stability and the product quality of the dibromohydantoin.

The utility model discloses an anti-riot fork with a locking structure, which comprises a handle, the inside of the handle is in threaded connection with a connecting rod, and one end of the connecting rod is fixedly connected with an extension rod. According to the anti-riot fork with the locking structure, through the arrangement of the locking mechanism, the fixing mechanism and the metal fixing lantern ring, when the anti-riot fork is used, an external control system controls a power source to be turned on, then an electromagnet on the surface of the metal fixing lantern ring is powered on to generate magnetic force, an iron block at the bottom of the electromagnet is attracted, and at the moment, the metal fixing lantern ring is in a sealed state; an external connecting mechanism can penetrate through the metal fixing lantern ring to fix the anti-explosion fork so as to prevent accidental injury or illegal use, then after the waist of a gangster is inserted into the fork head, two sets of hydraulic rods on a supporting plate are started, the hydraulic rods stretch out and draw back to drive a locking head on the top to rotate on a limiting rod till the locking head is folded, and then the anti-explosion fork is fixed. And the waist of the gangster is locked inside the fork head, so that the gangster can be subdued quickly.

The utility model discloses a wormwood cutting device, which belongs to the technical field of wormwood processing and comprises a mounting plate, two support plates are assembled on the upper end face of the mounting plate, a bearing plate is assembled at the upper ends of the two support plates together, and an adjusting component is assembled on the upper end face of the bearing plate. The wormwood cutting device has the advantages that cutting is uniform, machining efficiency is improved, manpower is saved, and loss is reduced, the threaded rod is rotated to drive the pressing plate to move downwards and clamp one end of wormwood, the guide rod air cylinder is controlled to enable the cutting blade to cut the clamped wormwood, the clamped wormwood is pushed at a constant speed, and the wormwood is cut through the cutting blade. The wormwood cutting device ensures that wormwood is uniformly cut by the cutting blade, is beneficial to subsequent processing and use, avoids the problem of different sizes and lengths during manual cutting, reduces waste and loss caused by different sizes, is faster and more accurate in cutting compared with manual cutting, can more quickly complete a large number of cutting tasks, and improves the working efficiency. Therefore, the production efficiency is improved.

The utility model relates to the technical field of portfolios, and discloses a multifunctional portfolio which comprises a waterproof bag, a waterproof soft cover is movably hinged to the back face of the waterproof bag, a flexible shoulder strap mechanism is arranged on the outer side of the waterproof bag and comprises a first shoulder strap and two fixing discs, a second shoulder strap is arranged on the outer side of the first shoulder strap, and the two fixing discs are arranged on the outer side of the second shoulder strap. The inner wall of the first shoulder strap is fixedly connected with a first hook-and-loop fastener, the front face of the second shoulder strap is fixedly connected with a first hook-and-loop fastener, and the inner wall of each fixing disc is fixedly connected with an auxiliary bearing. According to the multifunctional file cover, through the waterproof bag, the waterproof soft cover, the first shoulder strap, the second shoulder strap, the first hook-and-loop fastener, the first hook-and-loop fastener, the fixed disc, the auxiliary bearing, the movable disc, the rotating rod, the movable plate, the clamping shell, the clamping ball and the clamping hole, files can be stored in the waterproof bag and the waterproof soft cover; the hanging length of the first shoulder strap and the second shoulder strap relative to the waterproof bag can be adjusted through bonding of the first hook-and-loop fastener and the first hook-and-loop fastener at different positions.

The utility model discloses an alloy pipe surface corrosion-resistant treatment device, which relates to the technical field of alloy pipe processing, and comprises a treatment box body and supporting legs arranged at the bottom of the treatment box body, and further comprises a spraying assembly, a drying assembly, a transmission assembly and a stirring assembly. According to the utility model, the treatment liquid is uniformly sprayed on the surface of the alloy pipe through the spraying assembly, so that compared with a traditional soaking mode, the treatment liquid can be fully and uniformly contacted with the surface of the pipe, the uniformity of corrosion-resistant treatment on the surface of the alloy pipe is effectively improved, and the overall corrosion resistance is improved; the drying assembly of the equipment can enable hot air flow to continuously act on the alloy pipe through the fan, so that residual treatment liquid on the surface of the alloy pipe is quickly blow-dried, and adverse effects of the residual treatment liquid on subsequent processing and use are avoided.

The invention discloses a closestool technology, and aims to provide a quick-release closestool cover which can only be detached by a worker and a detaching method of the quick-release closestool cover. According to the technical scheme, the quick-release closestool cover comprises a closestool cover body connected with a closestool through a hinge, and the hinge comprises at least one locking mechanism; the locking mechanism comprises a hinge piece, a steel column, a steel ball and a magnet capable of activating the mechanism; the hinge piece is installed on the toilet lid, the whole hinge piece is square, a cavity for containing the steel ball is formed in the hinge piece, and a channel communicated with the cavity and allowing the steel column to be inserted therein is further formed in the hinge piece; the whole steel column is T-shaped and comprises an insertion part and a limiting part, the insertion part is cylindrical, annular grooves are symmetrically formed in the insertion part, the insertion part can be inserted into the hinge piece along the channel of the hinge piece and makes contact with the steel balls in the cavity in the insertion process, and the steel balls are pushed away to allow the steel column to enter the cavity; the invention is applicable to the technical field of closestools.

The utility model discloses an electric needle acupuncture needle convenient to replace for electric needle acupuncture therapy, including needle body, handle and elastic component, the outside of needle body is equipped with the rotary seat, the top of needle body is equipped with needle tail, the outside of needle tail is equipped with the fender, the handle is inserted in the outside of needle tail, the inside of handle is equipped with the sliding slot and the rotation groove, the bottom of handle is equipped with the guide groove, the elastic component includes the installation board of being equipped in handle, the spring of being equipped in the installation board bottom and the abutting block of being equipped in the spring bottom, the utility model discloses a needle body, handle and elastic component are set up, can replace needle body fast under not influencing electric needle acupuncture needle use, so that using, can dismantle and replace elastic component simultaneously, avoid the problem that elastic component breaks down and can not use.

This utility model relates to a mechanical comparator suitable for bearing testing, comprising a housing, a first positioning block fixedly mounted on the top of the housing by a first bolt and a second bolt, and a base plate fixedly connected to the bottom of the housing; an adjusting block fixedly mounted inside the housing, the adjusting block being connected to a first guide post, the first guide post being fitted with a first guide sleeve; the adjusting block being connected to a second guide post, the second guide post being fitted with a second guide sleeve; a fixing block being mounted on the upper end of the first and second guide posts; and a second positioning block being connected to the fixing block; the inner diameters of both the first and second positioning blocks are matched to the bearing assembly to be tested; an adjustment device is mounted on the base plate for adjusting the gap between the fixing block and the adjusting block. Thus, the inner holes of the first and second positioning blocks precisely match the outer ring of the bearing to be tested, and with the coaxiality control of the mandrel and measuring ring, the bearing is ensured to be subjected to uniform force, avoiding subjective errors caused by reliance on worker experience in traditional dial indicator testing.

The invention provides an IP encryption method based on ZYNQ. The method comprises the following steps that an integrated ARM processing system issues licence data to an encryption verification module through a GP port; a device ID acquisition module, a key generation module and a key verification module are arranged in the encryption verification module; the device ID acquisition module is powered on to automatically acquire the device ID, supplements the device ID to 128 bits and outputs the device ID to the key generation module; the key generation module calculates a product key according to the 128-bit device ID and an encryption algorithm; the secret key verification module comprises a logical operation unit and a logical judgment unit; the binary single-bit control signal is interconnected with a target IP; and the target IP enables or disables the IP according to the value of the binary single-bit control signal. According to the method, the encryption of the IP is realized, and the IP core is prevented from being copied or used by an unauthorized third party, so that the design and intellectual property are effectively protected.