40results about How to "Avoid Conversion Errors" patented technology

The invention relates to a mine use rail type routing inspection robot and a positioning method thereof. Constraint information of a track plotting module, a positioning site information detection module and an environment information recognition module is collected; a comprehensive information processing and positioning module is used for performing incremental smoothing processing so as to obtain the robot position estimation; the regulation can be performed according to the positioning precision requirements and the practical work conditions; the used label quantity can be greatly reduced;the positioning precision can still be ensured under the conditions of high noise of partial sensors and short period failure of detection information; the reliable positioning under the complicated severe conditions such as dust, smoke and water vapor can be met; meanwhile, the uncertainty of any position in the current moment operation track can be obtained, so that the precision detection and warning of the routing inspection robot on the environment information and equipment with potential safety hazards can be realized.

The invention relates to a helical-gear precise modeling method involving tooth alignment errors. The helical-gear precise modeling method comprises the following steps that (1) a tooth profile equation of a cutter is obtained according to the structure of the rack cutter; (2) according to the forms of the errors and a motion law, a cutter tooth surface equation involving helical line inclination and shape errors is obtained through coordinate transformation; (3) according to the error cutter tooth surface equation and a gear meshing law, a meshing equation is obtained; (4) according to the meshing equation and the error cutter tooth surface equation, a tooth surface equation involving helical line inclination errors and shape errors is obtained; (5) tooth surface discrete points are obtained and processed so that the tooth surface discrete points can be directly read into finite element software, and a helical gear finite element model is built. According to the helical-gear precise modeling method, the helical gear tooth surface equation involving the tooth alignment errors is directly derived according to an error cutter equation, hybrid programming is conducted through mathematical software and the finite element software, the helical gear finite element model involving the tooth alignment errors is built in a parameterized mode, modeling efficiency and precision are improved, and the workload of calculation and analysis is reduced.

Belonging to the technical field of hydrometallurgical equipment, the invention relates to an acid adding device with an accurate and automatic pH value control function. The device comprises an acid solution storage tank (2), an acid solution distributor (10) and an acid solution control system. The acid solution distributor (10) is installed inside a reaction container (5). The acid solution storage tank (2) is arranged at a position higher than the acid solution distributor (10), and is in connection with the acid solution distributor (10) through a hand stop valve (4), an electric butterfly valve (6), an infusion tube (7) and a movable sleeve (8) in order. By employing an advanced on-line real time control technology, the device provided in the invention generates no acid fog while adding a high concentration acid solution, and has the advantages of high pH value control precision, low labor intensity, simple structure and reliable operation.

The invention relates to a continuous collection device for volatile ammonia gas in field soil and a method for determining the loss amount of nitrogen in the soil by using the same. The device comprises an ammonia gas collector, an ammonia gas recycling device, a connection pipeline for connecting the ammonia gas collector and the ammonia gas recycling device, and an automatic temperature control device for regulating an internal temperature and an external temperature of the ammonia gas collector. Through measurement, collection and comparison of the internal soil temperature and the external soil temperature of the device, the internal soil temperature of the device can be automatically regulated, so the internal soil temperature and the external soil temperature of the device are kept consistent, and the effect of too large temperature difference on result authenticity is avoided. At the same time, with the use of a reaction principle of NH3 and sulfuric acid, a gas diffusion theory and an excess collection liquid, the soil volatile ammonia gas can be ensured to be continuously and completely collected. The device not only can be used for long-term continuous collection of the volatile ammonia gas in the field soil, can relatively accurately reflect the effect of the soil ammonia gas volatilization on the loss of nitrogen in the soil, but also has the characteristics of simple structure, easy operation and relatively low labor cost.

This invention relates to Richter hardness basic device, which comprises the following: base socket on the workbench; impact part with tungsten carbide ball head; guiding cylinder to control the impact part radium direction; impact part lift clamper structure; control device; speed test device and data collection device, wherein the impact part gets energy form the gravity and the speed test device adopts the laser Doppler speed test system.

The invention discloses a tool for detecting the hole and end face perpendicularity, and belongs to the technical field of machining detection devices. Three positioning blocks for axial positioning installation of an inner diameter face of a workpiece hole to be detected are circumferentially arranged on a test tool body, wherein at least one positioning block is arranged on the test tool body in the mode of being capable of being adjusted in the radial direction. A test gauge capable of rotating around the axis is further arranged on the test tool body. The axis formed by the three positioning blocks and the rotating axis of the test gauge are parallel or coincide with each other. The hole and end face perpendicularity test tool is ingenious in concept, the axis of the workpiece hole is used as the detection positioning reference creatively, the end face is used as a detection element, data obtained through detection are hole and end face perpendicularity tolerance values, detection is rapid, operation is easy and convenient, and data are visual and efficient; when the test tool is used for connecting rod end face perpendicularity detection, the detection positioning reference and the detected element coincide with the connecting rod design reference, the problem that a traditional test means is influenced by connecting rod hole shape errors is avoided, and the detection precision is greatly improved.

The invention discloses a method for determinacy shape correction processing based on the surface shape error slope. The method comprises the first step of inputting the surface shape error slope and a height removal function of a to-be-processed optical part; the second step of converting the height removal function into a slope removal function; the third step of utilizing a deconvolution calculation method to calculate a dwell time function according to convolution relations of the slope removal function, the surface shape error slope and the dwell time function required for determinacy shape correction processing control; the fourth step of performing the determinacy shape correction processing on the surface of the to-be-processed optical part based on the calculated dwell time functions. The dwell time necessary for the processing control is calculated by directly using surface shape error slope data obtained through measurement, the surface shape error slope does not need to be converted into the surface shape error height, so that the conversion error caused by the fact that the surface shape error slope is converted to the surface shape error height is avoided, and the method is favorable for improving the determinacy in the processing process and improving processing accuracy.

The invention belongs to the field of integrated circuits, and relates to an interconnection line model reduction method based on time-domain trapezoidal method difference. The method comprises the steps as follows: reading performance data of an interconnection circuit, utilizing an improved node voltage method to build a corresponding time-domain equation; utilizing a trapezoidal method to discretize the time-domain equation of the interconnection circuit and obtain a nonhomogeneous recurrence relation; using a nonhomogeneous Arnoldi algorithm to construct a projection matrix, and then using the projection matrix to perform contragradient transformation on the time-domain equation of the interconnection circuit to obtain a reduction system; and finally, using the trapezoidal method to discretize the reduction system to obtain time-domain output. By virtue of the method, the matching of state variables between the reduction system after the time-domain trapezoidal method difference and the original system is ensured; the time-domain reduction precision is ensured; and the numerical stability during the reduction process and the passivity of the reduction system are ensured. Compared with the original time-domain model reduction method, the computing complexity is greatly reduced; and the method has higher precision in time-domain compared with a frequency-domain reduction method.

The invention relates to a concentration analysis method. The method comprises the following steps: pretreating a sample to be measured; converting an element to be measured into a gaseous compound; introducing the gaseous compound of the element to be measured into a multi-reflection spectral absorption cavity through carrier gas; detecting the attenuation of the laser power in the cavity to obtain a gas laser absorption spectral line; calculating the concentration of a gaseous compound of the element to be measured. In the method, a molecular absorption spectral line is directly adopted for analyzing without using consumable instruments such as a chromatographic column or accessories such as an atomization furnace or an ionization furnace or being interfered with background absorption and fluorescence. In the method, the absolute absorption of light is analyzed by using the sample without frequently making a standard measuring curve as being done for an atomic spectra and the like, so that the measuring flow can be simplified, and the scalar period can be prolonged on a large scale to realize instant measurement, so that the automation and the convenience in measurement are realized. The method has the advantages of high analysis speed, low equipment cost, high sensitivity and accurate measurement.

The invention discloses a geometric spline-based linear projectile model modeling solving method, which comprises the following steps of: expressing a boundary of a linear projectile problem as a geometric spline of a linear combination of a control vertex and a primary function with geometric significance by using parameters, and finishing modeling; taking a geometric spline primary function withthe same boundary representation model as a shape function of displacement and surface force in a boundary integral equation of the linear projectile problem, obtaining a linear equation set throughthe discrete boundary integral equation, building a stiffness matrix and solving to obtain the displacement and the surface force of a boundary control vertex; according to the method, the physical domain boundary of the 2D line projectile problem is modeled through the geometric spline, an accurate conversion method represented by a common model is provided, and the approximation error of the common boundary model in the modeling stage is avoided; a geometric spline basis function is adopted in a boundary integral equation to serve as a shape function for describing boundary physical quantity, and the model conversion time is saved.

The invention discloses a multi-phase state estimation method of a power distribution network. The method comprises the following steps that S1) an error mode and a measurement equation of a state estimation and measurement model are established; S2) multi-phase network constraints of state estimation are established; S3) according to the multi-phase network constraints and the state estimation and measurement model, a state estimation model is established; and S4) on the basis of the established state estimation model, iteration optimization is carried out, and multi-phase state estimation of the power distribution network is realized. The method can be used to avoid conversion error caused by indirect measurement, the calculating efficiency is high, an estimation result is relatively accurate, and the method can be widely applied to state estimation industries of the power distribution network.

The invention discloses a AI-based call center language processing method and system, and the method comprises the following steps: obtaining a user statement, and converting the user statement into an initial text; converting the initial text into initial voice; recognizing meanings of the initial text and the initial voice through the AI and obtaining a reply text; converting the reply text into reply voice, outputting the reply voice, and waiting for the next user statement to be acquired; and if the new user statement triggers the early warning condition after the reply voice is output, carrying out processing according to the plan. According to the method and system, the AI technology is used for processing the initial text and the initial voice, and compared with a traditional question-answering mode of fixed statements, the flexibility is higher, and the method and system can adapt to different scenes. In addition, data can be expanded by converting the initial text into the initial voice, the the initial text and the initial voice are mutually verified, the recognition accuracy is improved, and obvious conversion errors are prevented.

The invention relates to a system and method for programming an automation system. To avoid conversion errors and to guarantee data during the programming of an automated system, a graphic description by means of pulse timing diagrams is used to generate a program of the automation system, in particular the program of a memory programmable control. Modifications of the pulse timing diagrams thus lead directly to modifications of the program of the memory programmable control, without the need for a renewed conversion that potentially contains errors.

The invention relates to a corpus correction method and device, computer equipment and a computer readable storage medium. The corpus correction method comprises the steps of obtaining a text corpus which comprises a to-be-corrected corpus; segmenting the text corpus according to the position of the to-be-corrected corpus in the text corpus to obtain a target corpus segment comprising the to-be-corrected corpus; and replacing the to-be-corrected corpus in the target corpus segment with a corresponding silent pinyin adjusting corpus, and inputting the replaced target corpus segment into a namedentity recognition model to obtain a correction label of each corpus in the target corpus segment. By adopting the method, the conversion accuracy when the voice content is converted into the text result can be improved.

The embodiment of the invention discloses a control method of a food processor. The control method comprises the steps that when it is detected that a user approaches the food processor, it is detected whether or not the user is still located within a detection range of the food processor within first preset duration, and the discharging gesture of the user is detected within the first preset duration; when it is detected that the user is still located within the detection range within the first preset duration, and the discharging gesture of the user is detected, a cup cover of the food processor is automatically opened; within second preset duration after the cup cover is automatically opened, it is detected whether or not materials are put in the food processor; if yes, after the reminding of a box cover, the cup cover of the food processor is automatically closed. According to the control method, before the cup cover is controlled to be opened or closed automatically, delayed verification is conducted on a control signal, the reliability of controlling the cup cover is ensured, the problems that when a sensor breaks down or detects that the user passes by the food processor, the cup cover is opened accidentally are avoided, and the phenomenon of clamping hands is avoided.

The invention discloses a registration mechanism-based multi-point temperature measurement control system. An ARM (Advanced RISC Machine) chip is taken as a processing core, a temperature sensor ID registration mechanism is introduced through communication with an upper computer, and when sensor nodes are replaced and added or deleted, only sensor IDs need to be operated in the upper computer or a registration circuit. The multi-point temperature measurement control system can register or deregister the sensor IDs in the upper computer or the registration circuit according to users' demands to control number of temperature measurement points so as to reasonably utilize resources; and meanwhile, sensors can be timely and quickly replaced in the presence of faults, added or deleted through the registration mechanism without program re-curing, so that great conveniences are provided for practical system maintenance and management.

The invention provides a nuclear magnetic resonance relaxation time and pore throat radius conversion method, and relates to the technical field of oil and gas exploration and development. The methodis used for solving a technical problem that an error is large when nuclear magnetic resonance relaxation time is converted into a pore throat radius. The conversion method comprises the following steps: obtaining a nuclear magnetic resonance T2 spectrogram of a rock core sample before a centrifugal experiment and a nuclear magnetic resonance T2 spectrogram of the rock core sample after differentcentrifugal experiments, and calculating relaxation time cut-off values according to the nuclear magnetic resonance T2 spectrogram before the centrifugal experiment and the nuclear magnetic resonanceT2 spectrograms after the centrifugal experiments to obtain the plurality of relaxation time cut-off values; calculating pore throat radius values according to the centrifugal force values in the different centrifugal experiments to obtain a plurality of pore throat radius values; and fitting the plurality of relaxation time cut-off values with the plurality of corresponding pore throat radius values, measuring the same rock core sample so that conversion errors caused by difference of the rock core samples are avoided, directly fitting the relaxation time cut-off values with the pore throat radius values, and reducing the conversion errors caused by conversion by a high-pressure mercury injection method.

The invention relates to a piston type gas-liquid dual-purpose micro-flow standard device, comprising a vertically-reversed piston cylinder, wherein the piston cylinder is connected with an upper end piston cylinder cover; the piston cylinder or the piston cylinder cover is fixed on a bearing bracket; the piston cylinder cover contains a cross-shaped four-way connector; one connector in a horizontal direction of the cross-shaped four-way connector is connected with a water tank through a water inlet pipe valve; the other connector in the horizontal direction is connected with a detected liquid flow meter through a water outlet pipe valve; the vertical upward connector is connected with a transition container internally provided with an oil-water separating layer through a transition container valve; a gas outlet is arranged above an oil face of the transition container; and the gas outlet can be connected with a detected gas flow meter; and the top of a piston is inserted into the piston cylinder and the piston is driven by a linear module to move up and down. According to the invention, two different gas or liquid medium flow meters can be detected by the same set of the standard device; and an outer diameter of the piston is used as an effective measurement diameter and a machining precision is easy to improve, so that the detection precision is improved and the whole structure of the device is small and simple.

The invention discloses a multi-channel communication sharing device and a multi-channel communication sharing method. The device comprises a RS485 interface, a UART interface, a WIFI interface and afirst signal control isolation unit, wherein the output end of the RS485 interface is connected with the first input end of the first signal control isolation unit, the output end of the UART interface is connected with the second input end of the first signal control isolation unit, and the output end of the first signal control isolation unit is connected with the input end of the WIFI interface; a forwards arranged diode is connected between the first input end and the output end of the first signal control isolation unit is series, and a forwards arranged diode is connected between the second input end and the output end of the first signal control isolation unit. The method uses the device for sharing a communication signal. Compared with the prior art, the device and the method can connect the different interfaces in parallel, meets the requirement of using a plurality of terminals using different communication interfaces in parallel, also ensures the conversion efficiency of thecommunication signal, and is effectively reduced in cost investment.

The invention discloses a narrow and deep cavity rail-mounted multi-power head machining device. The narrow and deep cavity rail-mounted multi-power head machining device comprises a guide rail, a bottom frame, a longitudinal shaft moving feeding mechanism and a machining module. The longitudinal shaft moving feeding mechanism and the machining module are both installed on the bottom frame. The longitudinal shaft moving feeding mechanism coordinates with a rack on the inner side of a guide rail base on a machine tool through a gear to achieve longitudinal precise movement of the machining module. The longitudinal shaft moving feeding mechanism takes part in multi-axis linkage to achieve precise insertion supplementing movement of the machining module. According to the narrow and deep cavity rail-mounted multi-power head machining device, the machining module comprises a plurality of functional modules with different machining characteristics, efficient machining with various machiningcharacteristics can be achieved, and the application range of the machining device is greatly enlarged. According to the narrow and deep cavity rail-mounted multi-power head machining device, a pneumatic motor serves as machining main shaft drive, an air cylinder is used for carrying out vertical feeding, relative to electric main shaft and motor drive feeding, the narrow and deep cavity rail-mounted multi-power head machining device has the beneficial effects that at the same power, the size and the length of the pneumatic motor are far smaller than those of an electric motor, the speed reducer design is omitted in the drive part, and the size of the related whole device is greatly reduced.

The invention relates to a method and device for determining the corresponding relation between the engineering quantity and the quota and electronic equipment, and the method comprises the steps of obtaining one piece of engineering quantity; obtaining each piece of quota data in a quota database, wherein the quota data comprises a quota identifier and a keyword group corresponding to the quota identifier; and based on the keyword group, determining a corresponding relationship between the project quantity and the quota data. According to the technical scheme, the problems that the manual quota application workload is large and errors are prone to occurring can be solved, the working efficiency and quality are greatly improved, the labor cost is saved, and meanwhile engineering quantity unit conversion errors can be avoided. In addition, no matter how the format of the professional engineering quantity changes, the quota application of the engineering quantity is not influenced. And the same professional quota core keyword group quota database among different projects can be shared, so that the self-perfection and updating of the core database can be continuously realized.

The invention relates to a torque sensor combined with a reducer. The torque sensor comprises a reducer, an output shaft, an outer shell and an inner lining, wherein the sensor is arranged on the output shaft of the reducer; the outer shell is fixed with the outer shell of the reducer; a pair of rolling bearings is arranged between the outer shell and the inner lining; the inner lining is fixedlyconnected with the output shaft of the reducer; conductive copper rings are arranged at the places of the inner lining where the bearings are arranged, and an emitter is arranged in the middle; on the output shaft, a force measurement ring is arranged outside the inner lining; the outer shell is provided with a power converter; the inner lining is fixedly connected with the output shaft of the reducer through an adjusting bolt by a T-shaped tapered wedge; the force measurement ring consists of two semicircular annular structures and has a transverse H-shaped section; and two groups of torque measurement resistance strain gauges are adhered to the outer circular surface of the middle working section. The torque sensor is combined with the reducer and utilized to test the working torque directly without being influenced by other parameters so as to greatly improve the testing accuracy, not to affect the transmission efficiency and make full use of the effective energy source.

The embodiment of the present invention discloses a control method of a food processor, which includes: when detecting that the user is approaching the food processor, detecting whether the user is still within the detection range of the food processor within a first preset time length, and Detect the user's discharging gesture within the preset time period; when it is detected that the user is still within the detection range within the first preset time period, and when the user's discharging gesture is detected, the cup cover of the food processor is automatically opened; Detect whether the material has been put into the food processor within the second preset time after automatic opening; when it is detected that the material has been put into the food processor, it will automatically close the lid of the food processor after the lid reminds. Through this embodiment solution, the control signal is delayed and verified before the automatic opening or closing of the control cup lid, which ensures the reliability of the cup lid control and avoids the error of opening the lid caused by the sensor failure or the user passing by the machine and being detected by the sensor. problem, and avoid the phenomenon of hand pinching.

The invention provides a cross-local area network data synchronization method and device, equipment and a storage medium. In the scheme, a transfer device is arranged at a sending end, the sending end device obtains to-be-sent data, and according to a preset frequency and transmission configuration of the transfer device, and data to be sent is circularly sent to the transfer equipment for storage through http and json protocols, the transfer device is accessed through the same preset frequency by the receiving end equipment, and the data transferred by the sending end and stored on the transfer equipment is obtained. In the embodiment of the invention, the transfer device is arranged to temporarily store the data needing to be synchronized, the problem of conversion errors or analysis failures caused by direct transmission is avoided, data synchronization is carried out in the transfer equipment in a small transaction mode, and the stability of data synchronization can also be improved.

The invention belongs to the technical field of psychological health, and discloses a psychological health education system based on a virtual display technology, which is provided with a computer, aninternet interaction module, a stereo module, an environment simulation module, a perception simulation module and a virtual reality interaction module, The user and the far-end psychological healtheducation counseling expert carry out illness state interaction; the simulation module simulates multiple perceptions to increase the presence of a user, and the user feels the true degree of existence of the user in the simulation environment as a main angle. The method has interactivity, and the user can operate objects in the simulated environment and obtain the natural degree of feedback fromthe environment; the autonomy is increased, objects in the virtual environment release the pressure of modern people according to the degree of action of the physical motion law in the real world, theslight symptoms of insomnia, anxiety and depression are relieved, and serious psychological health problems are avoided; and a far-end expert carries out analysis and scheme improvement, so that a large amount of time is saved for the user.

The invention discloses a method and a device for generating an incoming parameter object of a test interface application. When an in-parameter class object in a test case for a test interface application is generated, the set in-parameter class model is called for endowing each field with a field value corresponding to each field by the in-parameter class model according to the field type of eachfield in the obtained class file to generate the in-parameter class object. Furthermore, when it is determined that the field type of the field is a user-defined type, the parameter-in-class model instantiates the field into a parameter-in-class object, and all field values contained in the parameter-in-class object are sequentially given to the field. Therefore, due to the setting and calling ofthe parameter class model, only the class file in the test case needs to be compiled without compiling the generation process code of the in-parameter class object, and the problem of conversion errors caused by directly adopting a Json conversion tool for conversion is avoided, so that the in-parameter class object of the test interface application is simply and correctly generated without the participation of professionals.

The invention belongs to the field of nuclear power plant equipment reliability, and particularly discloses a rapid calculation method for Bayesian update of logarithmic normal distribution of a nuclear power plant, which comprises the following steps: S1, according to a prior distribution function of logarithmic normal distribution equipment failure and actual power plant failure sample data, and according to a Bayesian formula and a lambda probability density function of posteriori distribution; s2, calculating an integral interval; s3, caculating integral terms in the posterior distribution function, so that the posterior distribution function without the integral terms is obtained; and S4, fitting posterior distribution parameters. Compared with a conversion method commonly used in engineering, the method has the advantages that conversion errors caused by conversion from logarithmic normal distribution to conjugate distribution are avoided, and the calculation accuracy is improved; meanwhile, the numerical integration calculation amount is greatly simplified by estimating a posterior distribution function integration interval, and the calculation speed and stability are improved by adopting an anti-calculation overflow processing method.

The invention relates to an electric motor with a torque sensor. The torque sensor is sheathed on the outwards extending end of a rotary shaft of the electric motor, the back end of an outer shell of the torque sensor is fixedly connected with a front end cover of the electric motor, and the rotary shaft of the electric motor is connected with the back end and a front cover of the outer shell of the torque sensor through rolling bearings. The torque sensor comprises a friction wheel, a generator, a generator seat, a transmitter, a shaft clamp ring, a proving ring and the outer shell, wherein the generator seat, the shaft clamp ring and the proving ring are sequentially and fixedly connected to the rotary shaft of the electric motor from left to right in the outer shell, the generator is fixedly connected to the generator seat, the friction wheel is connected to a rotary shaft of the generator, and the outer circle of the friction wheel is in frictional contact with the inner wall of the outer shell; and the shaft clamp ring is fixedly connected with the transmitter through a transmitter connecting plate. In the invention, the electric motor and the torque sensor are combined together, a working torque is directly tested by utilizing the torque sensor, and therefore, the electric motor can not be influenced by the fluctuation of parameters comprising current, voltage, rotary speed and the like, thereby greatly improving testing precision.