109results about How to "Reduce human influence" patented technology

The invention discloses a federated learning method and device based on a block chain. The method comprises the steps: determining the block chain; enabling the coordinator node to create a federatedlearning task according to the model original data sent by each participant node; receiving training data obtained by local training of the participant nodes; sending the to-be-updated parameters to other participant nodes according to the training data, so as to enable the other participant nodes to update own model parameters according to the to-be-updated parameters; and after model training iscompleted, issuing reward resources according to training data provided by each participant node in the training process, and writing rewards into the block chain. Compared with a traditional mode, the mutual trust problem of all parties is effectively solved; all parties participating in federated learning negotiate together to generate a coordinator node, so that the transparency of the processis improved; federated learning whole-process data is recorded in a block chain, so that the traceability of data operation is ensured; all parties are encouraged to actively participate through rewarding resources, and the enthusiasm of participants is improved.

The invention relates to a train speed limitation control method based on a train network system. According to the method, an air braking system and a traction system can send the respective states and fault information of the air braking system and the traction system to a TCMS (Train Control and Management System), the TCMS works out loss (fault) condition of air braking and electric braking through comprehensive analysis, so as to judge the highest speed limit of a train and execute speed limitation in the following two manners: the TCMS sends a speed limitation instruction to a traction control unit through a network bus, and when the traction control unit detects a network bus signal indicating that speed limitation is in need, a corresponding speed limitation mode is carried out to ensure that the train is not overspeed; the TCMS sends a speed limitation mode to be executed to a driver display screen to be displayed so as to mind a driver, and then the driver operates a driver master controller to enter into a corresponding speed limitation mode. The train speed limitation control method is based on the train network control system and has the advantages that speed limitation grades and speed limitation values at all grades can be adjusted according to project characteristics, so the train speed limitation control system has very strong portability and expandability.

An underground water supply network water leakage detecting method utilizes a multi-probe dependence tester, and probes of the tester are installed on a pipe network to collect the sound wave data. The method comprises the following steps: a. the probes are installed a pipe network valve, a hydrant or a water meter at internals, and the probes are closely contacted with the pipe network valve, the hydrant or the water meter; b. the sound wave data is collected; c. whether water leakage fault occurs is judged by analyzing the data. By utilizing function relevant principle, the method can calculate the position of water leakage point just by collecting the sound wave data at two points, thus having high locating efficiency; regional water leakage general investigation can be completed by testing for once, the data is easy to store, and the accident analysis can be conveniently carried out; as the data can be automatically collected, recorded and processed, the working intensity and anthropogenic influence can be greatly reduced.

The invention belongs to the technical field of rotating machinery detection and in particular relates to a torque change measurement device and method for detecting the rotating machinery in the operation process. The torque measurement device comprises magnets (2), inductive transducers (3), a signal conditioning module (4), an acquisition module (5) and a computer processing system (6). The torque measurement method comprises the following steps: 1) selecting two measuring points; 2) installing the torque measurement device; 3) acquiring an unloaded initial signal; 4) acquiring a loaded turn signal; and 5) computing the torque of the shaft to be measured. The invention is convenient and simple to install, easy and practical to operate and high in measurement precision, has no requirement for installation precision, basically dispenses with adjustment, can greatly save the measurement preparation time, simultaneously has low requirement for the linearity of the sensor, saves cost and can be widely applied to the field of rotating machinery monitoring and diagnosis.

A planetary gearing vertical assembling device includes a mechanical part, a hydraulic part and an electrical control part, the pipeline in the hydraulic part is separately connected with the upper thimble (2) and the lower thimble (11), the upper thimble (2) supporting positioning device and the lower thimble (11) supporting positioning device are respectively installed on the corner piece board (19) and the engine base bedplate (16) coaxially; the pinion positioning plate (20) is installed on the corner piece board (19); the movable positioning pin device (29) and the oblique wedge self-locking positioning device (21) are horizontally installed on the bedplate (16) of the engine bed. The invention has the advantages of being safe and reliable, easy structure, convenient operating, good versatility, increasing the assembling efficiency, stable and credible quality and no high requirement for the engineering level of the assembling worker.

The invention provides an automatic coupling system of a reflection-type optoelectronic device. The automatic coupling system comprises a supporting structure, a manual fine-adjusting alignment unit, an automatic five-dimensional fine-adjusting alignment unit, an image acquisition device and an automatic ultra-violet curing device, wherein the automatic five-dimensional fine-adjusting alignment unit is formed through modification of a manual fine-adjusting frame namely a push rod motor and an optical coupling structural component are mounted on the basis of the manual fine-adjusting frame; the manual fine-adjusting alignment unit is designed by adding a right device adjusting device and a device power-up device on the basis of the manual fine-adjusting frame. According to the automatic coupling system of the reflection-type optoelectronic device, provided by the invention, the manual fine-adjusting alignment unit is fixed, and light searching coupling is realized by adjusting the automatic five-dimensional fine-adjusting alignment unit according to the control algorithm in a control circuit; besides, the automatic coupling system further has the advantages that the cost is low, the expandability is high, the design is ingenious, the operation time is long, and the automation degree is high.

The invention relates to a method and an instrument for checking positioning leaking of underground pipe lines. The invention has the functions of positioning pipe line, hunting leakage and monitoring leakage. The invention can complete leaking point pre-positioning and leaking point accurate positioning in one checking without knowing the pipe diameter of pipe. The invention has the advantages of having multi functions and of having high reliability.

The invention relates to a device for resisting and controlling pathogenicity Avian Influenza Virus, and relative application. Wherein, it based on the character and transmission path of causal agent, uses high temperature to disinfect the causal agent of air, and baffle the transmission path, to resist and control the Avian Influenza Virus transmission. It comprises that heating the air into chicken coop to 70Deg. C, using the circulated spray device formed by water pump, tube, ejector, spray room and liquid storage device to disinfect with chicken coop; reducing the temperature to room temperature, and dedusting, using dehumidifying network to keep the humidity at 60%; entering the sterilize air into the chicken coop sealed by films. The invention has simple process, automatic process, and saved energy, without pollution. And it can replace temperature insulator and temperature reducer, in winter and summer.

The invention relates to a flow velocity measurement system and method for sheet flow. The flow velocity measurement system for the sheet flow comprises a water source and a flow slope, a plurality of positioning marks and fluid dropping devices are arranged on the periphery of the flow slope, an image capturing device is arranged opposite to the flow slope and is connected with an image processing device, the image processing device is connected with a computing device, and the fluid dropping devices and the image capturing device are electrically connected with a controller. Compared with a traditional method, the flow velocity measurement system and method for the sheet flow have the advantages that multiple points can be arranged on an observation area and can be tested and observed at the same time, the field of view is broad, and flow velocity of the sheet flow on a large area can be well observed; a recording process is more objective, manual influences and errors are small, process observation and recording of a tracing segment of the flow can be achieved, direct observation and computation of various feature flow velocities like the maximum flow velocity, the minimum flow velocity, the barycenter flow velocity and the dispersion velocity can be achieved, and observation and computation on the average flow velocity can be more scientific and accurate; the system is quite low in experiment cost and good in economy, and the accuracy can reach a quite high degree.

The invention discloses a pushing-out device and method for columnar sediment undisturbed samples. The pushing-out device comprises a length-adjustable base, a fixing device, an electric device, a soil pushing device and a maintaining device. According to the samples of different lengths and diameters, the length of the base and a soil pushing rod of the soil pushing-out device is adjustable, and a sample tube counter-force ring, a fixing disc and a soil pushing disc can be replaced. The electric device of the soil pushing-out device is connected with a speed adjusting button and a protecting switch, a half-tube sample supporting table is a movable platform, the moving speed of the half-tube sample supporting table is uniform with the speed of the soil pushing rod or the pushing-out speed of the columnar sediments, and the soil pushing rod can be automatically cleaned and maintained through a cleaning device and an oil applying device. The pushing-out device is reasonable in structure, convenient to machine and manufacture, convenient to operate in usage and high in controllability, influences by human factors are small, disturbance on the columnar sediment undisturbed samples is small, and the pushing-out device and method are suitable for all kinds of sediment undisturbed samples and provide the reliable samples for research on the physical and mechanical properties of the sediment undisturbed samples or sedimentary environment evolution.

The invention discloses a DevOps intelligent operation and maintenance method based on a block chain, and belongs to the technical field of cloud computing and block chains. According to the DevOps intelligent operation and maintenance method based on the block chain, a block chain infrastructure is established in a P2P consensus network through a block chain service provider of a cloud data center, and execution of an intelligent contract and generation of a new block of the block chain are realized through cooperation; and each participation node of the blockchain service provider maintainsan account book together, and the execution condition of the key state related smart contract in the DevOps implementation process is recorded in the account book. The DevOps intelligent operation andmaintenance method based on the block chain can effectively solve the mutual trust problem among application developers, testers, operation and maintenance personnel, cloud infrastructure providers,cloud service providers and tool providers, and has good popularization and application value.

The invention discloses a medical insurance accurate identification method based on a block chain, and belongs to the technical field of intelligent contracts and block chains. According to the medical insurance accurate identification method based on the block chain, a block chain infrastructure is established in a P2P consensus network through a block chain service provider of a cloud data center, and execution of an intelligent contract and generation of a new block of the block chain are realized through cooperation; the participation nodes of the block chain jointly maintain an account book, and the execution condition of the key medical data intelligent contract in the commercial medical insurance life cycle process is recorded in the account book; health and medical conditions are provided by issuing tokens and enabling insurers to participate in, and medical and health data sharing among participation nodes is completed through a safety channel and anonymization processing. Themedical insurance accurate identification method based on the block chain can effectively solve the mutual trust problem between an insurance company and an insurance applicant, and has good popularization and application values.

A special integrated production device for furniture parts comprises a machine frame and a feeding rack arranged on the machine frame. One end of the feeding rack is a feeding end, the other end of the feeding rack is a discharging end, and a first automatic dust removal device, a embellishing device, a drying device, a paint spraying device and an airing bin are arranged on the feeding rack sequentially from the feeding end to the discharging end at intervals. The embellishing device and the paint spraying device each comprises a paint spraying chamber with a paint spraying platform and two groups of spraying guns arranged in the paint spraying chamber, wherein each group comprises two spraying guns, a conveying belt is laid horizontally on the paint spraying platform, a transverse sliding rail is arranged above a feeding end and a discharging end of the conveying belt, and a movable seat is installed on the transverse sliding rail. The two spraying guns in each group are installed on the same movable seat and are arranged in the mode of inclining downwards towards the two outer sides of the corresponding paint spraying platform. The transverse sliding rails and the movable seats are arranged, uniform paint spraying on the furniture parts is realized through transverse and reciprocating swinging of the spraying guns. The special integrated production device is suitable for embellishing and paint spraying of various furniture parts, and improves the production and quality.

The welding device of plastic door and window welding machine relates to a mechanism of plastic door and window welding machine. Said mechanism includes two holddown pliers devices, positioning heating device and welding melting spacing mechanism, the described two holddown pliers devices are respectively equipped with a set of sliding mechanism fixedly-connected with them, and the described two sliding mechanisms are connected with holddown pliers feeding devices capable of synchromoving with them. Said invention is mainly used on plastic door and window welding machine.

The invention relates to a fixed-point quantitative automatic loading method of bulk sulfur, comprising a belt transport system, a variable frequency dragging automatic positioning and traction system and a rapid precise loading system (3). The belt transport system transports bulk sulfur in a sealed circular stock ground (1), a sulfur forming device or other sulfur storage yards to the rapid precise loading system (3); the variable frequency dragging automatic positioning and traction system tracts the sulfur transport train to part in a loading position accurately; the rapid precise loading system (3) meters the bulk sulfur from a belt transporter (4) accurately and loads the bulk sulfur rapidly in a sulfur transport rain at fixed point. The invention has the advantages of high metering precision, rapid loading, high degree of automation, small occupied area, environmental-friendliness and non-dust, fully sealed safe operation and all-weather automatic and continuous loading.

The invention provides a whole-packet tobacco leaf charging and loosening method. By the technical method, impact of human factors in the charging and loosening process is reduced, tobacco leaves can be loosened uniformly, the breakage rate in the later tobacco redrying process is low, the aroma loss of a tobacco leaf raw material is reduced, and the consistency of tobacco leaf processing characteristics is ensured; by the whole-packet tobacco leaf charging and loosening method, the mechanical degree is high, the labor cost is reduced and the labor productivity is improved, and at present, only 12 people are needed for quickly charging the tobacco leaves. A device provided by the invention has the characteristics of simple and compact structural design, reasonable layout, high working efficiency, high reliability and safety and the like.

The present invention provides a device and a method for simulation experiment for assessment of migration and fate of nano particles in an underground environment. The device comprises a water supplydevice, a reactor, an injection device, a sampling device and a water storage device. The reactor is a cell body with an upper cover, and the space of the internal portion of the cell body is dividedinto a water inlet pool, a simulation water-bearing layer and a water outlet pool through two vertical separated nets; the water supply device is connected with the water inlet pool, the water storage device is connected with the water outlet pool, an upstream of the area of the simulation water-bearing layer in the cell body is provided with an injection well, the cell body is internally provided with a monitoring well, an injection hole is arranged at the position, corresponding to the injection well, on the upper cover, a sampling hole is arranged at a position corresponding to a monitoring well, the injection device is connected with the injection hole, and the sampling device is connected with the sampling hole. The device is flexible in design, simple to operate, high in practicability and low in cost.

The invention discloses a hand brake valve on-line performance detecting table. According to the hand brake valve on-line performance detecting table, the output end of an air source is connected with the input end of a bigeminy part, the output end of the bigeminy part is connected with the input end of an air storage pot, the output end of the air storage pot is respectively connected with the input end of a precise pressure regulating valve and the input end of an electricity-air proportion valve, the control end of the electricity-air proportion valve is connected with a computer, and the output end of the electricity-air proportion valve is connected with a detecting device. The output end of the precise pressure regulating valve is connected with an air inlet of a two-position five-way electromagnetic valve, the control end of the two-position five-way electromagnetic valve is connected with the computer, and the output end of the two-position five-way electromagnetic valve is respectively connected with a first sliding table air cylinder, a second sliding table air cylinder and a third sliding table air cylinder. The hand brake valve on-line performance detecting table is efficient and accurate in detected result, the full-automatic on-line detecting device is used, and therefore the detection efficiency is greatly improved. The detection results are intelligently judged, and therefore man-made influences are reduced.

The embodiment of the invention discloses an automatic test method and system of an imaging chip MTF value. The method comprises the steps of: before the test, setting an image definition range of the test; at an initial test position, collecting an initial image; judging whether the definition of the initial image is in the range, if yes, continuing to obtain a next image, and if not, changing the position of a relative standard target of a photoelectric sensor to a current test position, and then collecting a current image; judging whether the definition of the current image is larger than the last one, if yes, setting the current test position as a test position; and if not, setting the test position corresponding to the last image as a relatively good test position; and collecting test images at the relatively good test position. In addition, the invention further discloses an automatic test system and system of the imaging chip MTF value, and the system is used for realizing the above method. According to the invention, the automatic control of a position fine tuning process of a tested chip is realized, human influences in the test are reduced, and the imaging chip MTF value is tested more precisely.

The invention discloses a preparation method of a novel sepsis animal model. On the basis of implementing experiments on SPF-level Balb / c mice which are 8 weeks and 25-30g in weight and which undergoadaptive breeding for 1 week, the method is characterized by comprising the following steps: 1, in an adaptive breeding and molding stage, enabling the mice to freely take food and water; in an environment that light / dark alternate illuminating is implemented by an interval of 12h and temperature and humidity are proper, marking 60 Balb / c mice conforming to a standard, half male and half female, wherein each mouse has a corresponding fixed and unique serial number; with the adoption of a random number table method, equally dividing the mice into two major groups, namely a female group and a male group, and further dividing each major groups into four sub-groups, namely A (n=6), B (n=8), C (n=8) and D (n=8). The obtained novel model is intervened by such drugs as cyclosporin A and the like,resulting in a low immune function of the animals (the mice), which conforms to a circumstance that people, who are low in immune function due to such reasons as surgeries, age and the like, suffer from sepsis, so that a natural occurrence and development process of the sepsis can be simulated better.

The invention discloses an electronic contract order pledge loan method and device based on a smart contract, and aims to solve the problems that an existing order pledge loan method is nonstandard inorder contract, high in bad loan rate and the like, and brings difficulty to actual implementation of order pledge loan. The blockchain network comprises a plurality of nodes, including a buyer node,a seller node and a financial institution node. The financial institution node receives a loan request sent by a seller node based on a pre-signed electronic contract order, and the electronic contract order comprises digital signatures made by the seller node and the buyer node based on digital certificates of the seller node and the buyer node respectively; based on a preset intelligent contract, the loan request is audited; and whether to issue a loan to the seller node or not is determined according to an audit result of the audit. By constructing a block chain network, identity authentication is carried out on each node, mutual trust among the nodes is guaranteed, and meanwhile, the security of communication data is guaranteed.

The invention discloses a crack multiple-parameter observation device based on close-range photogrammetry. The crack multiple-parameter observation device comprises an image collection module used for acquiring conditions of cracks to generate crack images; a position determining module used for determining positions of the cracks and marking the positions on the crack images to generate marked images; an image processing module used for analyzing the crack images to generate crack parameters and marking the crack parameters on the marked images to generate result images, and a memory module used for storing the crack images and the result images. The crack multiple-parameter observation device enables crack observation data to be more accurate, higher in reliability and convenient to operate so as to effectively improve the crack observation efficiency.

The invention discloses a standard Dewar for measuring refrigeration performance of a co-axial pulse tube refrigerator and a manufacturing method of the standard Dewar. The standard Dewar is composed of a vacuum cover, a measuring base, a corrugated pipe, a wiring seat, a pumping nozzle, an adjusting ring, a mount, a columnar thermometer and a heating plate. Functions of the vacuum cover, the heating plate and the thermometer are integrated. Thus the refrigeration performance of the co-axial pulse tube refrigerators within a certain size range is measured and evaluated in the convenient and rapid manner, interference factors of performance comparison of different co-axial pulse tube refrigerators are reduced in the maximum manner, the refrigeration performance comparison of the different refrigerators is more scientific, measuring time and resource of the refrigeration performance of the refrigerators is saved, and measuring efficiency is greatly improved.

The invention discloses an integrated pile cap forming device and a construction method. The integrated pile cap forming device comprises a support, a pile cap forming drill bit installed below the support, a rotation driving device driving the pile cap forming drill bit to continuously rotate, and a lifting device driving the support to vertically move along the center axis of the pile cap forming drill bit. The pile cap forming drill bit is in a cylindrical shape and comprises a hollow sleeve and a spiral blade arranged on the outer side wall of the hollow sleeve from top to bottom. The hollow sleeve is arranged on the support and is in transmission connection with the rotation driving device. The construction method comprises the steps that firstly, the pile cap forming device is installed; secondly, pile body concrete pouring construction is conducted; thirdly, the pile cap forming device conducts downward drilling, and a soil model is formed; fourthly, pile cap concrete pouring construction is conducted; and fifthly, a pile cap is formed. The integrated pile cap forming device and the construction method are reasonable in design, easy and convenient to construct and good in using effect; the pile cap construction process can be synchronously and automatically finished in the pile body construction process, construction is easy, convenient and rapid, the construction process is easy to control, and the quality of the constructed and formed pile cap is high.

The invention provides a method for positioning by using laser three-dimensional projection in hull construction. A projector fixing portal frame is arranged on the ground. A ship body segmented structure is arranged below the portal frame, a laser projector is fixed to the upper portion of the fixed portal frame, the outline of a T-shaped profile projected by the projector of the laser projectorirradiates the faces of the segmented structures on the two sides, the segmented structures are arranged on a segmented structure jig frame, and a projector software system is fixed to the bottom faceof one side of the fixed portal frame through a support. T-shaped material structure positioning point and line projection is carried out through the steps of ship body structure model processing, projection coordinate system conversion, establishment of a ship body T-shaped material structure projection positioning file, format importing into a laser projector software system, establishment of aprojected ship body structure real coordinate system, establishment of an operation package and projection operation. The positioning precision of the hull structure can be detected through laser projection images. The method is suitable for being applied to laser three-dimensional projection positioning in hull construction.

The invention discloses a method for measuring and calculating maximum dry density of natural debris. The method specifically comprises the following steps: estimating stone mass percent of a stock ground or a site; performing a screening test on a debris sample through a water pressure sieving method to obtain the over-size particle content p and stone content; screening a reserved sample from particles with the particle size of 40-60mm in the debris for later use; screening the particles with the particle size of less than 40mm into two kinds of particles with the particle size of 5mm below or 5-40mm; performing a compaction test; determining a relationship between the stone content and the maximum dry density; taking the reserved sample of the particles with the particle size of 40-60mm, and calculating to obtain the bulk volume relative density of the over-size particles; substituting the stone content of the debris sample into a regression formula, and calculating to obtain the maximum dry density of the debris sample with the particle size of less than 40mm; calculating the corrected maximum dry density. Aiming at the characteristic that the natural debris serving as roadbed filling is good in performance and poor in gradation, the relationship between the particle size of the particles and the maximum dry density is analyzed, the maximum dry density of the natural debris is scientifically and comprehensively determined, the method is scientific, simple, convenient and rapid, and the test result is accurate and reliable.

The invention discloses a forming device and a construction process for reverse screw pile, wherein the forming device comprises a drill rod, a grouting equipment connected with external end of the drill rod and an integrated pipe cap forming device sleeved outside the upper part of the drill rod; the reverse screw pile comprises a pile body and pile ca, the outer wall of the pile body is provided with outer thread structure; the drill rod comprises a core rod and outer thread structure of rod body; the integrated pile cap forming device comprises a support, pile cap forming drill head, rotational drive device and lifting device, the pile cap forming drill head comprises a hollow sleeve and spiral blade; the forming construction process comprises steps of: 1, installing pile cap forming device; 2, drilling hole; 3, lifting and conducting synchronous pile body concrete grouting construction; 4, making the pile cap forming device drill to form clay model; 5, grouting construction of pile cap concrete; 6, forming of reverse screw pile. The forming device has reasonable design, simple construction and good effect, thus can finish construction process of pile body and pile cap of reverse screw pile easily and rapidly.

The invention discloses a quantitative injector, belonging to the field of medical instruments. The quantitative injector comprises a shell, an injector, a push rod, a lead screw, a nut, a cavity, a circuit board, a display, a control motor, a fixing seat and a switch, wherein the display, an injection amount adjusting knob and the injector are arranged on the shell; the push rod is arranged in the injector; the cavity is formed in the shell; the bearing and the circuit board are arranged in the cavity; the lead screw is arranged on the bearing; the nut is arranged on the lead screw; the lead screw is connected with the control motor; the circuit board is connected with the display, the injection amount adjusting knob, the control motor and the switch through leads respectively; the shell is provided with a track groove at a position corresponding to the lead screw; the fixing seat is arranged on the nut; the fixing seat is positioned on the outer side of the upper surface of the shell, and is connected with the push rod; and the switch is arranged on the shell, and is connected with the control motor through a lead. The quantitative injector has the beneficial effects that: mechanical transmission is adopted, so that accurate dispensing is realized, and stable medicament flow is ensured; and full-automatic operation is adopted, so that artificial influences are reduced, and the medicament effect, medical safety and the like are ensured.

The invention provides a pseudo soldering detection method based on machine vision and deep learning. The pseudo soldering detection method comprises the steps: 1, shooting welding spots, and obtaining original data images; 2, performing graying processing on the original data images; 3, preprocessing the images after graying processing, performing filtering processing, and eliminating noise; 4, carrying out segmentation processing on the preprocessed images, and distinguishing welding spots from a background to obtain all welding spot targets; and 5, performing pseudo soldering identificationon all the welding spot targets to complete pseudo soldering detection of the welding spots. According to the pseudo soldering detection method, automatic identification and pseudo soldering weldingspot detection of the body-in-white welding spots are achieved, and the labor cost can be saved; and the pseudo soldering recognition rate is high, and the human influence is reduced, and the industrial production efficiency and reliability can be improved.

The invention relates to an online measurement method for determining the spatial position of the axis of a revolution body, particularly to a binocular-vision-positioning-technology-based method formeasuring the dynamic axis position of a revolution body, thereby eliminating the influence on the measurement accuracy by the high temperature and vibration environment and improving the accuracy andreliability of measurement substantially. The method comprises: S01, arranging a plurality of measuring reference points on a support base of a revolution body and fixing a binocular vision positioning device in front of a measuring area; S02, measuring three-dimensional coordinates of the measuring reference points by using the binocular vision positioning device and setting the three-dimensional coordinates as measurement reference point coordinates; S03, arranging a dynamic measurement point stably at a rotation axis of the revolution body; S04, with the coordinate systems of the measuringreference points as references, measuring a coordinate value of the dynamic measurement point in the rotation process; and S05, carrying out circle center fitting on coordinates of multiple dynamic measuring points by referring to a circle standard equation based on a least squares method to obtain a spatial position of the revolution axis of the revolution body.