95results about How to "Accurate and stable" patented technology

A rod holder configured to operate in a two-stage loading manner allows a rod to be easily received. A minimally invasive system for spinal surgical operation allows a rod to be more accurately and stably received to a pedicle screw inserted into a vertebra by using the rod holder, a rod guide and a rod guide holder. The rod holder may control a rod with three stages: a first loading stage for moving back and fixing a loading unit to fixedly grip the rod; a second loading stage for rotatably gripping the rod; and a rod mounting stage for separating the rod from the rod holder. The spine surgery system includes a pair of rod guides connected to upper ends of a pair of pedicle screws to form a moving path of the rod; a rod holder; and a rod guide holder for defining an insertion path.

The invention belongs to the technical field of precision determination, and relates to a method for determining the precision of a blind-hole method residual stress testing system. The method comprises the specific technologies of sample plate sampling, stress-relieving annealing, sample surface preparing and strain gauge adhering, data line connection, testing parameter configuring, hole drilling, data collecting, data processing, and precision determining. The method is advantaged in stable technology and accurate result. With the method, deviations of a testing system can be visually, rapidly, and quantitatively determined. Therefore, testing errors caused by influencing factors such as strain gauge quality, hole drilling eccentricity, and additional strain can be conveniently adjusted. Thus, the accuracy of the residual stress testing before and after hot rolled coil decoiling can be ensured.

The invention relates to a star search method, which comprises three coarse adjustment star search proposals, a fine adjustment star search proposal and a tracking mode. The star search method has the advantages of low cost, low mounting requirement, convenient debugging, capacity of acquiring the orientation and a pitch angle value of an antenna in real time, no interference by external factors such as weather or geomagnetism and the like, and quick, accurate and stable star search.

The invention provides a terminal product driver loading stability testing method, which includes the steps: firstly, starting remote wakeup support in a BIOS (basic input/output system) of a terminal to be tested, writing a countdown automatic shutdown script and placing the script in a startup folder; and secondly, setting a remote wakeup program in a server, establishing a remote wakeup batch processing file and a vbs (visual basic script) file for realizing automatic looping execution of the remote wakeup batch processing file, automatically operating the remote wakeup batch processing file after operating the vbs file, realizing automatic looping boot of the terminal to be tested, reading driver information from the BIOS, automatically operating the countdown automatic shutdown script prior to shutting down the terminal to be tested after completely loading a driver, and clearing the loaded driver information. By the aid of the method, automatic repeated driver loading for the terminal to be tested is realized, terminal driver loading stability is reflected more really and accurately, manual operation and watching are omitted in the whole testing process, and testing cost is reduced.

The invention discloses a method for measuring the characteristics of a sliding bearing film. The method is built on the basis of a rotor-sliding bearing system imbalance response finite element analytical model, and carries out the calculation and inverse calculation of the characteristic parameters of the sliding bearing film through the test measurement data on a rotor. The method comprises the steps: firstly enabling the support of the sliding bearing film for the rotor to be equivalent to two radial boundary loads for constraint, i.e., equivalent film loads; secondly carrying out accurate and stable reconstruction of the equivalent film loads based on a regular dynamic load recognition method through employing a measured rotor imbalance response; finally building a mapping relation between the equivalent film loads and the characteristic parameters of the sliding bearing film, and recognizing the characteristic parameters of the sliding bearing film through a least square method. The method can obtain the characteristic parameters, which are difficult to obtain through a conventional method, of the sliding bearing film accurately and effectively, wherein the characteristic parameters of the sliding bearing film comprise a gird characteristic parameter and a damping characteristic parameter of the film.

The invention discloses a hydroelectric generating set starting process stability state evaluation method. The method comprises the steps of S1 obtaining the health samples of hydroelectric generatingsets working at different water heads in the normal starting process, wherein the health samples comprise working condition parameter data and N types of stability parameter data; S2 dividing workingwater head intervals of the hydroelectric generating set, and arranging health samples of the normal starting process of the hydroelectric generating set in each water head interval according to eachwater head interval; S3 extracting health samples in each water head interval, and drawing a stability parameter peak-to-peak health region corresponding to each type of stability parameters in eachwater head interval; and S4 monitoring the starting process of the hydroelectric generating set to be evaluated in real time, and calculating the overall stability state evaluation index of the starting process of the hydroelectric generating set to be evaluated. According to the method, the starting process of the hydroelectric generating set can be effectively monitored, and the stable state degree of the starting process of the set is quantitatively evaluated, so that the stable operation of the set is guaranteed, and the guidance suggestions are provided for stable operation of the starting process of the hydroelectric generating set.

The invention discloses a matrix evaluation construction method for determining the stability of environmental slope dangerous rock mass, and belongs to the technical field of infrastructure designing and building of constructional engineering. The matrix evaluation construction method can be used for accurately determining the stability of the environmental slope dangerous rock mass through combination of field investigation and theoretical calculation. The matrix evaluation construction method includes the steps that firstly a designer builds environmental slope dangerous rock mass identification indexes, and field investigation personnel are made to perform field investigation and record on a field; secondly, various parameters are submitted to the designer, a multifactor interaction relation matrix formula is formed by the adoption of the A.L.saaty scale numerical method, weighted values of the main identification indexes are worked out according to the formula, and the main identification indexes are determined; finally, contribution value assignment is performed on the main identification indexes, the total value of the evaluated environmental slope dangerous rock mass is worked out through the calculation formula, and accordingly the stability of the environmental slope dangerous rock mass is judged.

The invention discloses a rat condition monitoring method, a device, a processor and a storage medium. The method comprises the following steps of: acquiring an image of a predetermined place from animage acquisition device; and based on the convolution neural network computational model, the image is analyzed to generate the information about the existence of rodent emotion in the preset place.Thus, the technical solution of the embodiment solves the technical problem of poor stability existing in the prior art, which can not realize the operation in the mobile terminal or embedded device.

The invention relates to a quick calculation method for building representative temperature. According to the method, a user heat consumption weight reference value is calculated according to previoususer heat consumption data, the occupancy rate of a building is counted through thousands and tens of thousands of user room temperature collected by room temperature collectors, the occupancy rate can not change in a short time once the occupancy rate is determined, then typical user heat consumption weight values can be determined, most room temperature collectors can be in an unworking state at the moment, only the room temperature collectors of users at the typical positions are in a normally-opened state to collect the room temperature of the users at the typical positions in real time,then the building representative temperature capable of feeding back the system heat supply effect can be obtained in real time, and therefore the building representative temperature can serve as a feedback value to correct a heat supply system running control strategy while the building representative temperature supplies reference bases to the heat supply effect of a heat supply unit. Through running of the room temperature collectors of the users at the typical positions, the running cost of the room temperature collectors of the whole building is greatly reduced, and higher economical efficiency and higher efficiency are achieved.

The invention provides a trajectory eigenvalue-based system transient stability judgment and disturbance type selection method. A state equation in an unsteady state condition, and a linear processing method for a generator, a governor, an excitation system, a network equation and load at a non-equilibrium point are studied. A higher-order linearization model for the system is built, continuous solution of the eigenvalue in the unsteady state condition is realized, a trajectory eigenvalue curve is obtained, and the trajectory eigenvalue curve characteristics are analyzed. through studying system dynamic information in the trajectory eigenvalue under load disturbance and three-phase short circuit fault, a limitation whether the real part of the eigenvalue is larger than zero does not exist, a potential law is explored, a mapping relationship among the system transient stability, a disturbance type and the trajectory eigenvalue is built, and thus, quick and accurate system transient stability judgment and disturbance type selection can be realized. Through example analysis on WSCC 3-machine 9-point, the conclusion obtained by the method of the invention is consistent with a relative power angle curve of the generator, and feasibility of the method is verified.

The invention belongs to the field of traditional Chinese medicines, and the invention discloses a content determination method of a traditional Chinese medicine composition. The method comprises (a) the preparation of a sample solution, (b) the preparation of a reference solution, (c) chromatographic conditions, to be more specific, a chromatographic column of C18 reversed phase chromatographic column, the column temperature of 30 DEG C, mobile phases of A acetonitrile and B trifluoroacetic acid solution, the gradient elution flow rate of 0.4ml / min, detection wavelengths of 230nm and 327nm, and (d) determination. The method is strong in specificity and simple in operation, and the quality of the traditional Chinese medicine composition can be effectively controlled.

The invention discloses a system and method for realizing testing of a geophysical exploration digital packet, wherein the system comprises a digital packet testing device, and the method is as follows: the digital packet testing device is used for sending an analog signal to the digital packet to be tested and comparing the signal received from the digital packet to be tested with the analog signal for testing the signal transmission function of the digital packet to be tested; and the digital packet to be tested is used for taking the signal sent by the digital packet testing device as a downlink signal for receiving, and the received signal is taken as an uplink signal for sending to the digital packet testing device. By adopting the system and the method, the difficult problem of testing the geophysical exploration digital packet can be solved, the reliability and the stability in a seismic data acquisition system are improved and accurate reference data are provided for late-stage fine development of an oilfield, marine reservoir exploration and other applications.

The invention relates to a gauge block support which comprises a seat body, a horizontal bottom plate, a gauge block support plate and an angle adjustment plate, wherein the bottom plate is connected with the upper end of the seat body, a selected position at one end or between two ends of the gauge block support is rotatably connected with one end of the bottom plate, and a gauge block fixing frame is arranged at the upper surface of the gauge block support plate; one end of the angle adjustment plate is rotatably connected with the other end of the bottom plate or a selected position arranged between two ends of the gauge block support, and a plurality of clamp troughs are arranged at one side of the angle adjustment plate in the lengthwise direction, a lock shaft closely matched with the clamp troughs is fixedly arranged at one side of the gauge block support. The gauge block support provided by the invention has a simple structure, is easy to operate, can be used for effectively improving the work efficiency and measurement precision, can be adjusted according to the actual requirement so as to bear gauge blocks of various specifications and has a wide application prospect.

The invention discloses a method for measuring the ground resolution of a remote sensing satellite. The method comprises the following steps: laying a fan-shaped radial target, a rectangular target and a black substrate; imaging the area of the fan-shaped radial target and the rectangular target in cloudless weather by using a to-be-measured satellite, thereby obtaining a target image; and finally, analyzing the target image, determining the target edge position according to the actual imaging result of the target, calculating the coordinate of the center of circle of the fan-shaped radial target, determining the just resolvable position coordinate, and calculating to obtain the ground resolution. Compared with the prior art, the method disclosed by the invention has the advantages that the coordinates of the center of circle of a target image and the just resolvable position coordinate are calibrated, errors brought by visual contact of human eyes are avoided, accurate measurement of the ground resolution of a high-resolution satellite is realized, and compared with a conventional method, the method disclosed by the invention has the advantages of high precision and stable measurement result.

The invention discloses a transparent cabinet, which comprises a frame body and transparent parts combined onto the frame body. The frame body comprises compression assemblies and fastening assemblies. The fastening assemblies are compressed by matching the compression assemblies with the transparent parts to generate pre-stressing force to further fasten the transparent parts. During a whole implementation process of pre-stressing force fastening, irregular compression and surface deformation caused to the transparent parts due to the fastening cannot be generated, and therefore, the phenomenon that the existing flatness and the balanced internal stress of the transparent parts can be possibly broken due to the errors of all members and errors of the transparent parts is avoided. Meanwhile, the section stress of a single transparent part of an original transparent cabinet is changed into the overall stress of the transparent cabinet, and therefore, the overall strength, the torsion resistance and the external force resistance of the transparent cabinet are greatly enhanced.

The invention relates to a novel welding-free detachable bracket, which comprises a bracket vertical column and bracket support cross beams, and is characterized in that the bracket vertical column is C-shaped in cross section and of an integrated structure; the bracket vertical column is provided with convex positioning force points and hinge pin positioning force points; the convex positioning force points are located on a main body of the bracket vertical column; the hinge pin positioning force points are kidney-shaped holes and obliquely arranged at a side edge of the bracket vertical column; the cross section of each bracket support cross beam is of a U-shaped structure, a main plate of each bracket support cross beam is provided with a plurality of cable buckling holes, a protection plate of each bracket support cross beam is trapezoid-shaped, and each bracket support cross beam is provided with hinge pin locking force points; the bottom ends of the bracket support cross beams are located in the bracket vertical column in a sleeved mode, the initial end of each bracket support cross beam is located below the convex positioning force point, the bracket vertical column and the bracket support cross beam are provided with a hinge pin therebetween, the hinge pin penetrates through the hinge pin positioning force point and the hinge pin locking force point so as to enable the bracket support cross beam and the bracket vertical column to realize pressing, pulling and buckling structural connection. The bracket provided by the invention forms a detachable mode free of electrical welding, can carry out cross operations, is convenient to install, shortens the construction period, reduces the transshipment burden and has good compatibility for construction coordination.

The invention provides a fruit sorting device. According to the device, a fruit feeding device, a fruit brushing device, a spectral detection device, a fruit outlet device and a packaging system are matched with each other, fruits are automatically cleaned by the fruit feeding device and the fruit brushing device and then are conveyed to the spectral detection device, a fruit sorting model is established by the spectral detection device, spectral collection and model calculation are performed on the fruits after the model is established, a command is given to trigger the sorting operation, andthe fruits are ejected at outlets of the corresponding sugar value and weight value and are packaged by the packaging system at last.

The invention relates to an air conditioner, in particular to a structure for manually orienting vertical wind-guiding vanes of indoor units of wall-mounted air conditioners, which solves the problemthat the prior vertical wind-guiding vane is not good in orientation. A technical scheme comprises wind-guiding-vane rotation shaft brackets which are arranged on the upper and lower parts of an exhaust port, vertical wind-guiding vanes which are arranged in shaft holes of the wind-guiding-vane rotation shaft brackets through rotation shafts, and a connecting bar which is connected with a direction-adjusting shaft of the vertical wind-guiding vanes through the shaft holes. The structure is characterized in that a shaft hole on the right side of the connecting bar and the side of a water-receiving plate is connected with a manual orienting knob of the vertical wind-guiding vanes through a shaft; two convex ridges matched with the water-receiving plate for orientation are designed on the wall of the water-receiving plate under the knob; and the orienting knob consists of a disk provided with a rotation shaft hole in the center, a handle formed at one end of the diameter of the disk, a plurality of protrusions formed under the periphery of the disk on the base part of the handle, and the vertical wind-guiding vanes formed at the other end of the diameter of the disk. The structure isused in the indoor units of the wall-mounted air conditioner to ensure accurate stable orientation of the vertical wind-guiding vanes.

The invention discloses a vehicle detection method and system, and the method comprises the steps: carrying out the detection of a vehicle passing through a first detection region through a first detection unit, obtaining first detection information, and transmitting the first detection information to a data processing unit; under the condition that the vehicle enters the second detection area andthe first detection unit detects the vehicle, sending first trigger information to the second detection unit through the first detection unit, detecting the vehicle through the second detection unitto obtain second detection information, and sending the second detection information to the data processing unit, wherein the first trigger information is at least used for indicating the following information: the unique identification number of the vehicle; under the condition that the first trigger information and the second detection information are successfully matched, binding the unique identification number of the vehicle with the second detection information; matching the first detection information with the second detection information bound with the unique identification number of the vehicle through the data processing unit, and determining the current running state of the vehicle.

The invention discloses an ore pillar long-term stability monitor and an installation method thereof, which belong to the technical field of rock stability monitoring. The ore pillar long-term stability monitor comprises a stress monitoring module and a rock integrity monitoring module, the stress monitoring module is used for monitoring the stress change of an ore pillar, and the rock integrity monitoring module comprises an enclosed housing, a sound wave transmitter-receiver, a rock integrity signal processor, a rock integrity monitoring module power supply cell, and a signal transmission mode and the like. The sound wave transmitter-receiver is used for emitting sound wave into the ore pillar rock and receives the returned sound wave; the rock integrity signal processor is used for conveying the sound wave received by the sound wave transmitter-receiver to an electric signal; and the rock integrity monitoring module power supply cell provides the powder to the rock integrity monitoring module. The ore pillar long-term stability monitor takes ore pillar stress and rock integrity as a monitoring index parameter, which can accurately determine the ore pillar stability; the monitorcan be effectively protected by an external sealing layer, and continuous long-term monitoring for the ore pillar stability can be realized.

The invention provides a device for testing a geophysical exploration digital package, which comprises a signal receiving equalizing circuit, a first data signal conversion circuit, a control circuit, a second data signal conversion circuit and a signal pre-emphasis circuit, wherein the signal receiving equalizing circuit is used for performing signal equalizing on serial data received from the digital package to be tested; the first data signal conversion circuit is used for converting the serial data equalized by the signal into parallel data; the control circuit is used for outputting preconfigured analog parallel data to the second data signal conversion circuit, and comparing the parallel data converted by the first data signal conversion circuit with the analog parallel data so as to test the data transmission function of the digital package to be tested; the second data signal conversion circuit is used for converting the input parallel data into the serial data; and the signal pre-emphasis circuit is used for sending the serial data of the second data signal conversion circuit to the digital package to be tested after signal pre-emphasis processing is performed on the serial data. Through the device for testing the geophysical exploration digital package, more accurate and reliable reference data can be provided for the application of geophysical exploration.

The invention discloses an automatic opening device for emulsion explosive package. The device comprises a material strip conveying belt, a workbench and a finished product conveying belt and is characterized in that the workbench is provided with a first workbench and a second workbench, the material strip conveying belt is arranged above one side of the first workbench, and the finished productconveying belt is arranged at the end of the second workbench; the device further comprises a material strip arranging mechanism, a bag opening mechanism and a bag taking mechanism, wherein the material strip arranging mechanism is arranged on the first workbench; the bag opening mechanism is arranged on the second workbench, and the bag opening mechanism comprises a driving assembly, a track piece and an opening assembly; and the bag taking mechanism comprises a support and a bag taking assembly. The device has the beneficial effects that by means of the rotatable bag opening mechanism, the opening action of an opening plate is completed while the rotatable bag opening mechanism rotates, it is guaranteed that the contact area of the bag opening mechanism is small when the bag opening mechanism just rotates to enter a material bag, the supporting material bag is completely opened when the bag opening mechanism rotates in place, and the problems that the bag opening mechanism cannot accurately enter the material bag, consequently, bag clamping is caused, and the working efficiency is affected are solved.

The invention discloses a feeding system of solid polyolefin catalysts. The feeding system comprises a catalyst tank and a rotary feeder; a feed outlet of the catalyst tank is connected with the upperpart of the rotary feeder through a first pipeline; the lower part of the rotary feeder is connected with a second pipeline; the first pipeline and the second pipeline are provided with valves; the rotary feeder comprises a housing, a ball body, and a connecting shaft; a cavity is formed in the housing; the surface of the ball body is provided with a circular groove; the ball body is arranged inthe cavity, is pressed against the cavity firmly, and is capable of rolling in the cavity along the transverse direction axis; the connecting shaft is arranged on the transverse direction axis of theball body; the housing is provided with a hole corresponding to the connecting shaft; and the connecting shaft is designed to penetrate the hole. The pipeline on the tank bottom of the catalyst tank of the feeding system is provided with the rotary feeder, and catalyst charging amount can be controlled through adjusting the rotating speed of the rotary feeder, so that continuous, accurate, and stable introduction of solid catalysts into a polymerization reactor can be realized using the feeding system.