82results about How to "Avoidance of errors" patented technology

The invention discloses a dynamic positioning method and device based on UWB and laser ranging combination and belongs to dynamic positioning methods and devices. The dynamic positioning device comprises an ultra-wide band (UWB) wireless communication sensors, a UWB positioning label, laser ranging sensors, an upper computer and a POE interchanger. An ultra-wide band (UWB) wireless communication sensor station is arranged in an area to be detected, the laser ranging sensors are installed on and fixed to the ultra-wide band (UWB) wireless communication sensors, the UWB positioning label is fixed to a target to be detected, and the ultra-wide band (UWB) wireless communication sensors and the laser ranging sensors are connected with the upper computer through the POE interchanger. According to the dynamic positioning method and device based on the UWB and laser ranging combination, the laser ranging sensors are arranged on the ultra-wide band (UWB) wireless communication sensors respectively, so that the relative distance between every two adjacent ultra-wide band (UWB) wireless communication sensors is obtained, in this way, the coordinates of the ultra-wide band (UWB) wireless communication sensors can be re-determined or corrected after the ultra-wide band (UWB) wireless communication sensors are moved, and thus the requirement for dynamic positioning is met. The dynamic positioning method and device based on the UWB and laser ranging combination have the advantages that the dynamic positioning method based on the UWB and laser ranging combination is adopted, positioning is accurate, safety and reliability are guaranteed, installation is easy, and operation is convenient.

The invention discloses an LSTM and SAE-based telephone voice emotion analysis and recognition method; according to the method, voice information is subjected to a series of preprocessing of sampling,quantifying, pre-emphasis, framing, windowing and the like, and then fast fourier transformation is carried out on the voice information to obtain frequency domain characteristics of the voice information, and next, the voice characteristic parameters MFCC are extracted. By adoption of the method, an LSTM+ SAE neural network model is established to train the extracted MFCC characteristic parameters to obtain depth characteristic information of voice signals; the classification accuracy is obtained by combining a full-connection layer and a softmax regression algorithm, and model training is completed; and finally, the MFCC characteristic parameters to be tested are input into a trained model, emotion analysis is carried out on the telephone voice, and the emotion of a speaker is judged.

The invention discloses an inertial navigation-laser scanning integrated coal mining machine positioning device and method, and belongs to coal mining machine positioning devices and methods. The positioning device adopts the structure that a positioning device explosion-proof housing and a laser signal receiving module are fixed on the main body of a coal mining machine; an inertial navigation positioning device and a laser scanning microprocessor are mounted in an explosion-proof device; when the coal mining machine works, the inertial navigation positioning device acquires the real-time angular rate and the real-time through a sensor, and transmitting the data to the laser scanning microprocessor; in a laser scanning device, a laser scanning base station is arranged in the working area of the coal mining machine, a laser signal of the laser scanning base station is received by the laser signal receiving module, and meanwhile the data are transmitted to the laser scanning microprocessor; the laser scanning microprocessor is connected with an upper computer through a serial port. Respectively acquired positioning data are transmitted to a coal mining machine positioning control system for data processing, and the position of the coal mining machine is confirmed according to an algorithm integrating the least square method and the neural network algorithm, so as to realize precise positioning; the positioning device and method have the advantages of being precise in positioning, safe and reliable.

The invention provides a weak signal detection amplification system based on an optoelectronic oscillator and a detection amplification method thereof, and belongs to the technical field of microwavephotonics. The weak signal detection amplification system based on the optoelectronic oscillator comprises a laser, a beam splitter, a phase modulator, a high-nonlinearity optical fiber, a circulator,a photoelectric detector, a power divider, a coupler, an electric amplifier, an intensity modulator, an adjustable optical attenuator and a radio frequency source. Wherein the laser is connected withthe beam splitter, the beam splitter is respectively connected with the phase modulator and the intensity modulator, and the phase modulator, the circulator, the photoelectric detector, the power splitter, the coupler and the electric amplifier are sequentially connected end to end to form a loop; Wherein the intensity modulator, the variable optical attenuator and the circulator are sequentiallyconnected, the radio frequency source is connected to the intensity modulator, and the phase modulator is connected with the circulator through a high-nonlinearity optical fiber. By adjusting the radio frequency source and the adjustable optical attenuator, rapid and high-precision weak signal detection and amplification can be realized.

The invention is suitable for the technical field of power application, and provides an enterprise power utilization maximum demand prediction method and device, and the method comprises the steps: calculating and obtaining the sum of the maximum power utilization demands of all power utilization outgoing line loads of an enterprise in a prediction month; and obtaining the maximum power utilization simultaneous coefficient of the reference month enterprise, and determining the maximum monthly power utilization demand of the enterprise in the prediction month based on the product of the maximumpower utilization simultaneous coefficient and the sum of the maximum power utilization demands of all power utilization outgoing line loads of the enterprise in the prediction month. According to the invention, t in the calculation and prediction of the monthly power consumption maximum demand of an enterprise in a prediction month, by referring to the monthly maximum power utilization simultaneous coefficient, the proportion of each outgoing line load in the maximum power utilization demand is considered, so that the situation that the monthly maximum power utilization demand calculation result of the enterprise in the prediction month has a great error due to the fact that each outgoing line load comprises various different loads is avoided, and the prediction accuracy is improved.

The invention relates to liquid crystal panel detecting equipment. The liquid crystal panel detecting equipment comprises a supporting module, a detecting platform module, a feeding module, a discharging module, a code scanning module, a first positioning module and a second positioning module, wherein the supporting module is provided with a liner scanning shaft; the detecting platform module ispositioned on the supporting module; the feeding module and the discharging module are positioned above the detecting platform module; the code scanning module is used for recognizing a liquid crystalpanel; the first positioning module is positioned between the feeding module and the detecting platform module in the axial direction of the linear scanning shaft and is used for determining the aligning and compensating coordinates and angle of the liquid crystal panel; and the second positioning module is used for determining the pressing state of the liquid crystal panel and positioning the liquid crystal panel. By the liquid crystal panel detecting equipment, conductive particles of the liquid crystal panel can be detected automatically, and the number of the conductive particles and thepressing state of the liquid crystal panel are determined.

The invention relates to a contact applanation tonometer. The contact tonometer comprises a probe, a light source, a first image sensor, a convex lens, a strain gauge, a microprocessor and a display memory. The probe is in a circular truncated cone shape with small bottom and large top, and is made from a transparent optical material; an inclined plane is arranged at the lateral surface of the probe; the width d of the inclined plane is 3-10 millimeters; an elastic beam is fixedly installed at the upper end of the probe; the external end of the elastic beam is fixedly connected with the lower end of a housing; the strain gauge is installed on the elastic beam; the light beams emitted by the light source are perpendicularly incident to the upper end of the probe after being collimated to be parallel beams by the convex lens; and after sequentially going through the total reflection on the lateral surface and the lower bottom surface of the probe, and the reflection on the inclined plane of the probe, the light beams directly enter the first image sensor. The contact tonometer can continuously and dynamically detect multiple intraocular tension values during measurement of the intraocular tension.

The embodiment of the invention provides an identity authentication method, system and device. The method comprises the steps that a server receives a target certificate image, sent by terminal equipment, of a to-be-authenticated person and obtains a face-to-face signature video recorded for the video face-to-face signature process of the to-be-authenticated person; whether a human face in the target certificate image is modified or not is detected; when it is determined that the face in the target certificate image is not modified, the faces in multiple video frames in the face-to-face signature video are compared with the faces in the target certificate image, and a face comparison result is determined; and an identity authentication result of the to-be-authenticated person is determined at least based on the face comparison result.

The invention provides a full-automatic cement setting time determination device. The full-automatic cement setting time determination device comprises a maintenance box, a turnover mechanism, a rotary table sample placing mechanism, a detection mechanism and a control module, wherein the turnover mechanism comprises a telescopic module, a rotating module, a clamping module and a clamp which are sequentially connected; the rotary table sample placing mechanism comprises a motor, a rotary table connected with the output terminal of the motor, a test mold and a test mold base plate; a detectionmodule comprises a cleaning module arranged on a top plate of the maintenance box, an X axis displacement module and a support arranged on the X axis displacement module, a probe is arranged outside the support in a sliding manner, a Z axis linear displacement module is arranged at the top of the support, a fixation frame is arranged on the Z axis linear displacement module, and a displacement sensor and an adsorption module are arranged on the fixation frame. The full-automatic cement setting time determination device provided by the invention is provided with the maintenance box self, full-automatic determination is realized, manual duty is not required, multiple cement test pieces are tested once, working strength of a laboratory operator is reduced, and a personal error in a measuringprocess is eliminated, and the requirements of the national standard are perfectly met.

The invention discloses a physical mechanics experiment operating table and a working mode thereof. The physical mechanics experiment operating table structurally comprises a first experiment operating mechanism, an experiment partition plate, a second experiment operating mechanism, a third experiment operating mechanism, a checkered experiment plate, a piezoelectric sensor, infrared ranging sensors, a placement box, a transparent plate, a base, a first storage drawer, an idler pulley guiding wheel, a rubber suction cup, a second storage drawer, an operating table body, a first plate clamp, athird storage drawer and second plate clamps. The physical mechanics experiment operating table is a device for a physical mechanics experiment set,integrated device a user can conduct parts of physical mechanics experiments on the physical mechanics experiment operating table, wherein the physical mechanics experiments include a typical 'parallelogram rule' experiment, a typical 'spring' experiment and a typical 'momentum conservation' experiment; and the experiment devices of the 'parallelogram rule' experiment, the 'spring' experiment and the 'momentum conservation' experiment are combinedinto a whole through scientific distribution, the 'parallelogram rule' experiment, the 'spring' experiment and the 'momentum conservation' experiment are independent of one another, and do not interfere with one another during doing the experimentwhen conducted, and the three experiments can be conducted simultaneously through the unique design.

The invention provides a centralized scientific data synchronization method and system. The method includes the steps that all sub-platform servers establish user ports which a main platform server can have access to; a synchronous data item of scientific data is defined; synchronous data of the synchronous data item are designated; a first digest value of the synchronous data is calculated; the synchronous data and the first digest value are automatically uploaded to the main platform server in an incremental uploading mode; the state of synchronization of the main platform server and the data is accessed, and if data synchronization succeeds, access is ended; if data synchronization fails, the synchronous data which fail in synchronization before are re-uploaded synchronously until the synchronization of the synchronous data succeeds. Through the centralized scientific data synchronization method, the synchronization efficiency of the scientific data is improved, and the correctness of synchronization of the scientific data is also improved.

The invention discloses automobile bumper housing production equipment with a heat resistance and compression resistance detection function. The automobile bumper housing production equipment comprises a bottom plate, wherein a platform is arranged at the upper left part of the bottom plate; telescopic rods are arranged at the right part of a first motor; a cavity is formed in an extruder housing;a funnel is arranged at the upper part of the extruder housing; a female mold is arranged at the right end of the extruder housing; a fixing plate is arranged around a male mold; a second motor is arranged below hydraulic rods; a first suction cup is arranged at the lower left end of a first mechanical arm; a half gear is arranged at the right part of the first mechanical arm; conveyor belts arearranged above a full gear; and a heat resistance detection mechanism is arranged at the left parts of the conveyor belts. Compared with existing common automobile bumper housing production equipment,the automobile bumper housing production equipment with the heat resistance and compression resistance detection function has the advantages that the heat resistance of the manufactured bumper housing can be detected, the product quality is improved, and meanwhile, production resources are saved.

The invention relates to the technical field of data cables, and discloses an automatic cable winding device for computer data communication. The automatic cable winding device comprises a support, a rotating shaft is movably connected to the exterior of the support, a shell is movably connected to the exterior of the rotating shaft, a shell body is fixedly connected to the inner side of the shell, a supporting rod is movably connected to the interior of the shell body, a connecting plate is fixedly connected to the exterior of the supporting rod, a friction block is fixedly connected to the exterior of the supporting rod, an electrorheological body is arranged in the shell body, and an electric wire is fixedly connected to the interior of the shell. Through the interaction of the rotating shaft, the friction block, the supporting rod, the connecting plate, the shell body, the electrorheological body, the shell and the electric wire, winding is not affected by the structure during normal winding, when the rotating shaft stops rotating, the rotating shaft can be limited to not rotate, and therefore it is guaranteed that no size error exists in the wound cable, the labor amount of workers is reduced, and the normal production of the cable is not influenced.

The invention discloses a vacuum die-casting die of a large thin-walled structure part. The vacuum die-casting die comprises a lower die plate. A lower die seat is mounted at the top of the lower dieplate. An upper die seat is mounted at the top of the lower die seat. An upper die plate is mounted at the top of the upper die seat. A die cavity groove is formed in the top of the lower die seat. Athird groove is formed in the bottom of the lower die seat. The die cavity groove communicates with the third groove. A first groove is formed in the front surface of the lower die plate, and a threaded pipe is arranged in the first groove. According to the vacuum die-casting die, a die cavity shell is placed on a supporting plate, through motor drive, under cooperation of a limiting plate to sliding plate limiting, two sliding plates drive the supporting plate upwards, the supporting plate drives the die cavity shell to move upwards, then the die cavity shell is mounted into the die cavity groove, and the stabilization effect during mounting of the die cavity shell is improved; and a large amount of manual operation is avoided, time consumption of die cavity replacement is reduced, and dismounting and replacement are convenient for die cavity mounting.

The invention relates to a contact type portable tenonometer. The portable tenonometer comprises a shell, a probe, a first light source, an image sensor, strain foils, a microprocessor, a power supply and a display memory, wherein the probe has a round left end face and is made of a transparent optical material; at least two elastic beams are fixedly arranged at the right end of the probe; each elastic beam is perpendicular to the axis of the probe; the outer end of each elastic beam is fixedly connected to the left end of the shell; strain foils are arranged on the elastic beams; the image sensor is positioned at the right end of the probe; the axis of the receiving window of the image sensor coincides with the axis of the probe; the diameter of the receiving window is equal to or smaller than the diameter of the left end face of the probe; the first light source is arranged at the periphery of the receiving window; and the strain foils, the image sensor and the display memory are connected with the microprocessor. By the portable tenonometer, a plurality of intraocular pressure values can be detected continuously and dynamically, so that measurement errors can be effectively prevented when the tenonometer sways or a measured person shakes.

The invention discloses a molten iron liquid level detection method and device for converter molten iron desulphurization. According to the molten iron liquid level detection method, a programmable logic controller reads driving current from a frequency converter of a lifting motor which drives a stirring head and sets the size of the driving current utilized by the frequency converter as an initial current value when the stirring head is located above the molten iron liquid level; the stirring head is driven by the lifting motor to move towards the molten iron liquid level from the position above the molten iron liquid level; the programmable logic controller collects the real-time driving current of the frequency converter, calculates the specific value of the initial current value to the real-time driving current and compares the specific value with a preset value; if the specific value is smaller than the preset value, the programmable logic controller collects electric signals of an encoder arranged on the lifting motor of the stirring head to obtain a height value of the stirring head and adds the height value with a compensation value corresponding to the preset value so as to obtain a height value of the molten iron liquid level.

The invention relates to a floating water level measurement instrument for rock engineering investigation, and a measurement method thereof. The floating water level measurement instrument for rock engineering investigation comprises support frames, a pullback device, a rocker type winding reel, a measurement rope, a floating mark and a gravity drag reduction head; the pullback device is connectedbetween the support frames; the upper end of the support frame is installed with the rocker type winding reel through a bearing; the measurement rope is wound on the rocker type winding reel; the lower end of the measurement rope is connected with the gravity drag reduction head; the floating mark is put on the gravity drag reduction head; and furthermore, the floating marker sleeves the measurement rope. The floating water level measurement instrument for rock engineering investigation, and the measurement method thereof in the invention can solve the following problems: when water level measurement is carried out, a measurement head can meet with resistance by entering water; therefore, deviation exists between the fall point position and the predetermined position of the measurement head; the error of a measurement value is relatively high due to increasing of the released rope; because the sinking speed of the measurement head is relatively rapid, when the measurement head sinks to the lowest end of a drill hole, too many released ropes exist due to continuous rotation of winding reel by inertia, etc.

The invention provides a depth gauge checking tool. The depth gauge checking tool comprises a micrometer gauge and a calibration block and is characterized in that the checking tool comprises a measuring body, a clamping device and an ejector rod, the measuring body is installed on a stepped surface of a part to be measured, a guide hole is arranged at the center of the measuring body, the micrometer gauge is inserted into the clamping device and fixed at the end of the guide hole of the measuring body, the ejector rod is installed in the guide hole, a measuring block is rigidly connected with the bottom of the ejector rod, a measuring sheet is rigidly connected with the bottom of the measuring block, and one end of the measuring sheet protrudes out of the outline of the bottom end of the ejector rod. By means of the depth gauge checking tool, the distance between an end face of a groove and an end face of a hole of a hole type part which is provided with the groove at the bottom end can be measured, the measuring accuracy can be guaranteed, simultaneously the measuring is simple, convenient and rapid, and the work efficiency is high.

The invention relates to an automatic rotating conveying module. The module comprises a machine frame, a circulating conveying device, a plurality of rolling wheels which are arranged side by side anda camera module, wherein the circulating conveying device is arranged on the machine frame, and the top surface of the circulating conveying device forms a horizontal conveying surface; the pluralityof rolling wheels which are arranged side by side are arranged on the circulating conveying device, can rotate and can move along with the circulating conveying device under the driving of the circulating conveying device; the camera module is positioned right above the horizontal conveying surface; and a rack is arranged at the position, corresponding to the horizontal conveying surface, on themachine frame, gears are arranged on the outer peripheral surfaces of the rolling wheels, when the rolling wheels are conveyed to the position where the rack is located by the circulating conveying device, the gears on the outer peripheral surfaces of the rolling wheels are matched with the rack to enable the rolling wheels to pass through the position below the camera module in a rotating mode, and the length of the rack is larger than the outer circumference of the gears. According to the module, a chain is used for conveying products, products are rotated automatically on the chains, the appearance defects of the products are detected by using a high-speed camera, the stability is high, and the misjudgment rate is low.

The invention relates to the field of paphiopedilum planting related techniques and discloses an intelligent light intensity, temperature and humidity control system for paphiopedilum planting. The system comprises a client, a server, a planting management system and a central processing module. Bidirectional connection between the client and the server is realized through the Ethernet; bidirectional connection between the server and the planting management system is realized through the Ethernet; bidirectional connection between the planting management system and the central processing moduleis realized. The intelligent light intensity, temperature and humidity control system for paphiopedilum planting has advantages that light intensity, temperature and humidity are intelligently controlled by the system to guarantee the matching degree of the environment and paphiopedilum all the time, and the problem of influences on paphiopedilum growth due to paphiopedilum and growth environmentmismatching resulted from the fact that manual management in existing paphiopedilum planting wastes a great amount of labor and people fail to pay attention on and regulate the paphiopedilum growth environment all the time although a great quantity of modern tools are used is solved.

The embodiment of the invention provides a security cloud service big data-based component configuration method and an AI cloud service system, and the method comprises the steps: generating a combined probability value between a reference trajectory node and a target abnormal trajectory node according to the trajectory matching degree of the reference trajectory node and the target abnormal trajectory node under at least one abnormal trajectory node; by integrating the combined probability values between the reference trajectory nodes and the target abnormal trajectory nodes in each security abnormal environment, utilizing a large number of reference bases based on the abnormal trajectory nodes, so that more target abnormal trajectory nodes can be obtained, the pertinence of subsequent abnormality repair can be improved, and when the abnormal track node is used as the minimum basic unit, the situation that errors occur when the abnormal matching elements are combined can be avoided, and therefore the pertinence of abnormal repairing is improved.

The invention relates to a contact applanation tonometer. The contact tonometer comprises a probe, a light source, a first image sensor, a convex lens, a strain gauge, a microprocessor and a display memory. The probe is in a circular truncated cone shape with small bottom and large top, and is made from a transparent optical material; an inclined plane is arranged at the lateral surface of the probe; the width d of the inclined plane is 3-10 millimeters; an elastic beam is fixedly installed at the upper end of the probe; the external end of the elastic beam is fixedly connected with the lower end of a housing; the strain gauge is installed on the elastic beam; the light beams emitted by the light source are perpendicularly incident to the upper end of the probe after being collimated to be parallel beams by the convex lens; and after sequentially going through the total reflection on the lateral surface and the lower bottom surface of the probe, and the reflection on the inclined plane of the probe, the light beams directly enter the first image sensor. The contact tonometer can continuously and dynamically detect multiple intraocular tension values during measurement of the intraocular tension.

The agricultural product harmful element residue detection pretreatment system comprises a fixed base, connecting columns, a connecting plate, a mounting plate and a mounting roller; the connecting columns are evenly mounted at the four corners of the upper end of the fixed base, the middles of the connecting columns are connected through the connecting columns, and the mounting plate is fixed tothe upper ends of the connecting columns; a mounting roller is arranged at the upper end of the mounting plate. The system and method can solve the problems that according to a traditional agricultural product harmful element residue detection pretreatment method, part of agricultural products are obtained through direct digging on the agricultural products to be detected, the situation that harmful element residue distribution is not uniform is not considered, a detection result is deviated, and after the agricultural products are pretreated, no further pulping treatment is performed, the pretreated agricultural products are easily adhered to treatment equipment and are not easy to clean, and the repeated use of the treatment equipment can influence the detection result and cause the error of the detection result.

The invention discloses efficient polishing equipment. The efficient polishing equipment comprises bed body lateral plates. A transmission shaft is arranged between the bed body lateral plates. A rotating roller is arranged outside the transmission shaft in a sleeving mode. A conveying belt is arranged outside the rotating roller in a sleeving mode. The conveying belt is provided with a fixing groove and a guide groove. The guide groove is formed in the top of the fixing groove. The fixing groove is internally provided with a load bearing mechanism. The load bearing mechanism comprises a moldbody. A storing groove is formed in the top of the mold body. The mold body is internally provided with a storage battery and a first electromagnet. A pressing switch is arranged on one side of the mold body. A polishing mechanism is fixedly arranged at the tops of the bed body lateral plates. Through the load bearing mechanism, a plurality of metal parts can be machined at the same time after loading and assembling, only one or two operators are required in actual operation, and therefore the number of required personnel is effectively decreased, the manufacturing cost is lowered, labor intensity in the whole polishing process is reduced meanwhile, and polishing quality is guaranteed.

A voltage detection method for an alternating-current electric tool comprises the following steps: rectifying a voltage sinusoidal signal input by the voltage input end of the alternating-current electric tool, and obtaining a periodic waveform signal; acquiring a voltage value u corresponding to a sampling moment t of the periodic waveform signal in a preset sampling time period; carrying out linear fitting on the acquired voltage value u to obtain a slope k corresponding to the phase of the voltage sinusoidal signal; when the slope k is equal to a preset value, obtaining a phase phi corresponding to the voltage sinusoidal signal at the moment; and obtaining the phase phi of the voltage sinusoidal signal at any moment in a period T by taking the phase phi as an initial phase phi0. According to the voltage detection method, the initial phase and the phase at any moment in the period can be accurately obtained, the invention further provides the alternating-current electric tool applying the voltage detection method, the alternating-current electric tool can drive the motor to operate more accurately, and the problems of phase change errors, driving failures and the like are avoided.

The invention relates to the technical field of protective clothing, and discloses a protective clothing fabric winding detection device based on intelligent manufacturing. The protective clothing fabric winding detection device comprises a shell; the left portion of an inner cavity of the shell is rotationally connected with an unwinding roller, the right portion of the inner cavity of the shellis rotationally connected with a winding roller, and a detection strip is fixedly connected between the unwinding roller and the winding roller on the upper wall of the inner cavity of the shell; anda flexible strip is fixedly connected to the lower end of the detection strip, detection balls are evenly arranged at the lower end of the flexible strip, sliding rods are evenly connected to the upper end of the flexible strip, and a dielectric plate is arranged at the upper portions of the sliding rods in an embedded mode. According to the protective clothing fabric winding detection device based on intelligent manufacturing, before the detection strip detects a surface layer of a fabric in a normal state, particles on the surface layer of the fabric are removed through a clearing plate andan air spraying pipe in advance, and the plurality of detection balls are arranged at the lower end of the flexible strip in a matched mode, so that the situation that errors occur when the fabric isdetected in the later period is avoided, and the detection precision of the fabric is improved.

The invention discloses a guide and guard guide roller openness adjusting device which comprises a guide roller, a worm gear and a worm rod. The guide roller comprises a guide roller body and a guide roller shaft, wherein the guide roller body is arranged outside the guide roller shaft in a sleeving mode and is driven by the guide roller shaft to move peripherally, the guide roller shaft is an eccentric shaft, a connecting shaft is arranged at the end of the guide roller shaft, and the worm gear is movably connected with the connecting shaft arranged at the end of the guide roller shaft. A movable connection method is that a groove matched with the connecting shaft is formed in the worm gear, the connecting shaft is embedded into the groove to enable the guide roller shaft to move along with the worm gear, the worm rod is in pivot connection with the outer part of the worm gear, and the worm gear can move along with the worm rod. In addition, a gasket is further arranged on the worm gear, and an opening with the consistent shape and size as those of the groove is formed in the gasket; thus, the contact area between the connecting shaft at the end of the guide roller shaft and the worm gear is enlarged, the stress can be dispersed, impact force to a rolled piece is reduced, and the openness of the guide roller can keep unchanged.

The invention relates to a theodolite centralizing and leveling method. The theodolite centralizing and leveling method comprises the following steps that 1, a tripod of a theodolite is adjusted to be equal in height and suitable for the height of an operator, a tripod plane is made tending to be horizontal, rough centralizing is performed, and tripod feet are treaded stably; 2, a circular level is arranged on a tripod plane, and the circular level on the tripod is leveled by telescoping the tripod feet; 3, the circular level is taken down, the theodolite is fixed on the tripod, and an instrument base plane is made parallel to the upper top face of the tripod; 4, a leveling tube is parallel to two leveling screws and is leveled; 5, an alidade is flatly turned at 90 degrees, and the leveling tube is leveled by using a third screw; 6, optical centralizing is performed, a connecting screw is opened to translate a base so as to achieve accurate centralizing of the base, and the connecting screw is screwed tightly. The theodolite centralizing and leveling method is convenient to operate and high in efficiency, the situation that an error is produced during theodolite centralizing and leveling is avoided, and the precision of the theodolite can be well ensured.

The invention relates to the technical field of measuring and calculating systems. The invention further discloses an O2O scene-based optimal order picking mode measuring and calculating system. The output end of the order simulation prediction system is electrically connected with a basic parameter setting module and a partition parameter setting module. The output ends of the basic parameter setting module and the partition parameter setting module are electrically connected with an integration module; the input end of the integration module is electrically connected with the output ends ofthe basic parameter setting module and the partition parameter setting module; the output end of the integration module is electrically connected with an initialization module; the output end of the initialization module is electrically connected with a recording module; the output end of the recording module is electrically connected with an order reading module; according to the invention, the corresponding number of people can be configured under a specific order quantity through backtesting the order, and the conditions of the overtime order quantity, the human efficiency and the maximum occupied confluence wall grids under a half-warehouse order picking scheme are simultaneously measured, so that the utilization efficiency of personnel is improved, and the measurement accuracy of thesystem is also improved at the same time.