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265 results about "Small range" patented technology

Glue filling amount control method and system

The invention belongs to the technical field of glue filling control, and particularly relates to a glue filling amount control method and system. According to the method, the glue filling deviation can be controlled within an extremely small range through multi-time iteration control of a stage theoretical value and real-time feedback, the filling consistency and the bonding strength are remarkably improved, initial compensation is conducted in combination with various working condition parameters such as temperature, pressure and materials, the pressure and the diffusion dynamic state are monitored in real time, and the working efficiency is improved. The system can automatically adapt to environmental fluctuation and glue performance change, accurately control the filling amount, respond to overflow and viscosity abnormity in time, reduce glue waste, avoid product reworking caused by excess or insufficient glue, combine closed-loop feedback with maintenance strategies, automatically identify and process abnormal states, improve the automation degree and operation stability of a production line, and improve the production efficiency. Manual intervention is reduced, rapid configuration and expansion can be carried out according to different workpiece shapes, materials and production working conditions, and the device is suitable for various glue filling scenes.
Owner:SHENZHEN CPT PRECISION TECH CO LTD

Dynamic calibration error compensation method for electrical measuring instrument

The invention relates to the technical field of electrical measurement, and discloses an electrical measurement instrument dynamic calibration error compensation method, which comprises the following steps: S1, multi-source data real-time acquisition: integrating a temperature sensor, a humidity sensor and an electromagnetic interference detection module in a measurement instrument, configuring voltage, current, frequency and other measurement channels, and carrying out multi-source data real-time acquisition at the frequency of not less than 100HZ; environmental parameters (temperature T, humidity H and electromagnetic interference intensity E) and measurement data (model characteristic parameters X1, X2,..., Xn such as voltage, current and frequency) are synchronously acquired. According to the electrical measuring instrument dynamic calibration error compensation method, through multi-source data real-time acquisition and composite error model construction, in combination with multiple linear regression and an improved BP neural network, environment and measurement signal changes are comprehensively captured, an error compensation value is accurately calculated, a measurement error can be effectively controlled within an extremely small range, and the error compensation accuracy is improved. Compared with a traditional method, the measurement precision is greatly improved.
Owner:SHAANXI XICHI ELECTRIC CO LTD

Bandwidth control method and device, equipment and storage medium

The invention relates to the technical field of Internet, and discloses a bandwidth control method and device, equipment and a storage medium, and the method comprises the steps: determining a target resource address corresponding to a current request based on the address information of the current request in response to the issuing of the current request; the current request number and the request number threshold value of the target resource address are obtained, and the request number threshold value is determined based on the real-time bandwidth and the redundant bandwidth of the target resource address; and if the current request number is smaller than or equal to the request number threshold value, scheduling the current request to a target resource address, so that a target machine corresponding to the target resource address serves the current request. Therefore, the request number threshold value of the target resource address is determined based on the real-time bandwidth and the redundant bandwidth of the target resource address, so that prediction control is performed on the number of requests which can be borne by a machine, the bandwidth of the machine is controlled to fluctuate in a small range near the bandwidth threshold value, and the service quality of a service is not influenced while the bandwidth utilization rate is guaranteed.
Owner:CHINA TELECOM CLOUD TECH CO LTD

Range adaptive detection method and system based on light source and gain cooperative adjustment

The invention belongs to the technical field of environmental monitoring, and particularly relates to a range adaptive detection method and system based on light source and gain cooperative adjustment. The method comprises the following steps: setting a detection system to be in a small-range working state; signal acquisition is carried out, and a signal value after analog-to-digital conversion is obtained; judging whether the signal value reaches a saturation threshold value or not; determining a combination of new light source intensity and new sensor gain according to a pre-stored calibration parameter table; adjusting the light source intensity of the detection system to Inew, and adjusting the sensor gain to Gnew; after adjustment, new signal acquisition and conversion are carried out to obtain a new signal value, a pre-stored calibration parameter table is inquired to obtain a corresponding compensation coefficient based on the currently used combination of Inew and Gnew, and a compensated real concentration value is calculated and output. According to the invention, the core contradiction that the measurement precision and the measuring range are difficult to consider in a wide concentration range in the traditional fixed-measuring-range detection technology is fundamentally solved.
Owner:TIANJIN TONGYANG TECH DEV

Probe structure of vortex type edge sensor

The invention discloses a probe structure of an eddy current type edge sensor, which comprises an eddy current type sensor, a first clamping mechanism fixedly arranged on the back surface of a first sub-mirror, a second clamping mechanism fixedly arranged on the back surface of a second sub-mirror adjacently connected with the first sub-mirror, and a U-shaped notch structure with one end, close to the second clamping mechanism, of a U-shaped block, a cantilever beam is clamped on the second clamping mechanism, the cantilever end of the cantilever beam is inserted into the notch structure, and detection components of the eddy current type sensor are fixedly arranged on the cantilever end and the upper surface and the lower surface of the notch structure respectively. The probe structure shows excellent stability under specified environmental conditions, drifting among the sensors is kept within a small range, and the probe structure has high reliability and performance consistency under temperature change and humidity fluctuation.
Owner:UNIV OF SCI & TECH OF CHINA

A multi-functional emergency rescue multi-rotor unmanned aerial vehicle

ActiveCN120003745BEmergency rescueGear wheel
The present disclosure provides a multi-functional emergency rescue multi-rotor drone, which includes a drone frame. Installation cabins are arranged on both sides of the drone frame, and a control unit and a power supply unit are arranged inside the installation cabins. The present disclosure belongs to the technical field of multi-functional emergency rescue multi-rotor drones. When in use, the present invention controls the motor to cooperate with the gear assembly to rotate the connecting shaft, and with the arrangement of the linkage assembly, when the connecting shafts on both sides rotate, they can rotate in the same direction or rotate relatively, so that the arc-shaped frames connected by the two connecting shafts can flip synchronously in the same direction or synchronously in the opposite direction to control the orientation of the flight rotors at each position. And with the cooperation of the control component, the drone can change among the states of normal flight, vertical flight and rotor deflection flight, so that the drone can move in an open environment and a narrow environment, and can rotate and flip within a small range of environment.
Owner:ZHEJIANG LONGTONG INTELLIGENT TECH CO LTD

Micro-motion control device for online compensation of optical axis deviation

The invention discloses a micro-motion control device for online compensation of optical axis offset, which comprises an optical end mechanism and a base, a plurality of micro-motion driving rods are connected in parallel between the optical end mechanism and the base, a plurality of micro-displacement sensors are arranged on one side of the optical end mechanism, and the optical end mechanism comprises a mirror frame. According to the invention, the optical tail end mechanism, the micro-motion driving rods and the micro-displacement sensor are arranged and are matched with one another, and the lengths of the six micro-motion driving rods are respectively adjusted, so that the lens can be driven to realize any posture on six degrees of freedom in a small range, and meanwhile, measured data can be compensated in real time through feedback closed-loop control; the infrared imaging system has the advantages that the control precision is improved, the optical axis deviation of the infrared imaging system caused by the heat effect can be compensated, the optical lens can be controlled in a closed-loop manner by arranging the measuring element and the feedback ring, the control precision of the whole equipment is high, the stability can be kept in a complex mechanical environment, and the imaging quality of the system is ensured.
Owner:BEIJING CHANGFENG KEWEI PHOTOELECTRIC TECH CO LTD

Efficient turning device for automobile transmission shaft

According to the efficient turning device for the automobile transmission shaft, damping assemblies close to each other are arranged on the two sides of a tool base, so that the tool base drives the damping assemblies to move synchronously in the moving process, effective supporting points of the transmission shaft are further increased in cooperation with traditional fixing points at the two ends of the transmission shaft, and a small supporting distance is formed for the transmission shaft; by means of the small supporting distance, most turning force can be limited within the small range when the cutting knife turns the transmission shaft, generated forced vibration is buffered, the amplitude is reduced, the turning force is stabilized, and therefore the surface roughness of the transmission shaft is reduced, the service life of the cutting knife is prolonged, and the supporting distance is small. When the transmission shaft moves, the transmission shaft continuously changes along with the movement of the tool base, so that internal stress generated by cutting of the cutting tool is accumulated and can be more uniformly distributed at all parts of the transmission shaft along with the movement of the damping assembly, and dynamic compensation is carried out.
Owner:SHANGHAI WEIYI DRIVE SHAFT PARTS CO LTD

Sampling device for geological exploration of shale gas

The invention provides a sampling device for shale gas geological exploration, which structurally comprises a movable base, a positioning block, a vertical rod, a height adjuster, a collecting tank and a sampler, and is characterized in that a parallel plate added on the surface layer of the movable base is used as a basis, and four electrifying blocks are used for electrifying a calibration ring on the edge of a vertical through groove; then the calibration ring can scan the edge of the detection hole of the shale through multiple groups of infrared calibration lenses on the circular ring, so that the circle center of the vertical through groove can be aligned with the circle center of the hole of the shale, and if errors exist, error information is fed back to the movable base through an electric signal, so that the movable base can move in a small range according to the error range; the position adjusting effect is achieved, it is ensured that the sampler can be accurately embedded into the hole of the shale in the vertical direction, damage to the edge of the hole of the shale caused by position errors is prevented, and the stability of shale gas sampling is further improved.
Owner:GUIZHOU ENERGY IND RES INST CO LTD

Electrical installation and debugging method for 110kV booster station

The invention discloses an electrical installation and debugging method for a 110kV booster station, and aims to solve the problems of low precision, low efficiency, large potential safety hazard and the like in the aspects of equipment installation, wiring, debugging and the like in a traditional method. A laser positioning technology, a high-precision measuring instrument, electrical wiring software, big data analysis, artificial intelligence, automatic testing equipment, a perfect quality control and safety management system and the like are used; the installation precision is greatly improved, the wiring is optimized, the debugging efficiency and accuracy are improved, the quality control is enhanced, and the safety guarantee is enhanced. According to the method, the equipment installation precision error can be controlled within an extremely small range, the bus contact resistance is reduced to below 1 / 3 of that of a traditional mode, the cable fault checking time is shortened by more than 60%, the debugging time is shortened by 30%-40%, the data accuracy is improved by more than 95%, and the comprehensive construction cost is reduced by 10%-15%. The device is suitable for electrical installation and debugging engineering of various 110kV booster stations.
Owner:NINGXIA ELECTRIC POWER CONSTR PROJECT CO LTD

Large-aperture large-range arc-second-level intense laser multi-optical-axis parallelism testing machine

The invention relates to the technical field of optical equipment testing, and particularly discloses a large-caliber large-range second-of-arc intense laser multi-optical-axis parallelism testing machine which comprises a light pipe body, a light inlet and a light outlet, a supporting table is arranged at the end, close to the light inlet, of the light pipe body, and a three-dimensional adjusting frame is installed at the top of the supporting table; a focal plane observation system is installed in the light outlet, a two-dimensional adjusting frame is installed at the end, close to the light outlet, of the light pipe body, and a trepanning diaphragm plate is installed at the top of the two-dimensional adjusting frame. A second driving assembly is installed at the end, away from the rotating table, of the lifting table, a first driving assembly is installed at the end, below the second driving assembly, of the bottom plate, and a third driving assembly is installed at the end of the inclined plate. According to the invention, a series of structures are arranged, so that the testing machine can carry out large-aperture multi-optical-axis synchronous testing, manual or servo numerical control operation is carried out by means of the three-dimensional adjusting frame, the position of a to-be-detected product is adjusted, large-range and small-range precision adjustment is satisfied, and the testing precision is improved.
Owner:NANJING CONGREN OPTOELECTRONICS TECHNOLOGY CO LTD

Antenna control method, system and device and computer readable storage medium

The invention discloses an antenna control method, system and device and a computer readable storage medium, and relates to the technical field of communication, and the method comprises the steps: obtaining a target position of a terminal device; generating mechanical platform control information and beam forming control information according to the target position; performing angle control on the mechanical platform according to the mechanical platform control information; performing angle control on the beam forming chip according to the beam forming control information; wherein the mechanical platform is used for carrying out horizontal rotation and / or pitching rotation on the antenna array; and the beam forming chip is used for performing phase control and / or amplitude control on the antenna array. According to the invention, large-range coarse adjustment of the horizontal angle and / or the pitching angle of the antenna array can be carried out by means of the mechanical platform, and small-range fine adjustment of the antenna array can be carried out by means of the beam forming chip, so that the antenna array can flexibly send beams to the terminal equipment, the beam width limitation of a small-size array is broken through, and the antenna array can be flexibly and accurately adjusted. And the signal quality of the terminal equipment is improved.
Owner:FIBOCOM AUTO INC

A sample optimized passive microwave data seamless reconstruction deep learning method

The present application belongs to the technical field of remote sensing image intelligent processing, and particularly relates to a sample-optimized passive microwave data seamless reconstruction deep learning method. The present application acquires passive microwave data with track gap loss, fully utilizes the periodicity of the track gap and the spatial complementarity of adjacent time phases, optimizes samples through a small-range loss sample interpolation generation method and a single-cycle mask strategy, fuses U-net and Transformer to construct a multi-time phase feature connection reconstruction network model, realizes seamless reconstruction, and obtains remote sensing data with continuous distribution and seamless connection between the reconstructed area and the original area. The present application effectively solves the limitation that the existing deep learning reconstruction method has obvious "seam" marks in the reconstruction result when the sample quantity is small and the sample features are not rich enough, and is suitable for the reconstruction of all passive microwave image data or quantitative parameter data with track gaps, which will play an important role in the spatial complete monitoring of global or regional scale passive microwave data.
Owner:ANHUI UNIV

Server configuration debugging method, system and device, medium and computer program product

The present invention relates to the technical field of servers, and in particular relates to a server configuration debugging method, system and device, a medium and a computer program product. The server configuration debugging method comprises: a receiving step of receiving a debugging configuration releasing message, wherein the debugging configuration releasing message comprises a debugging configuration entry, and the debugging configuration entry comprises a key, a value and a effectiveness rule; a query step of querying whether there is a predetermined key in the debugging configuration entry; a determination step of judging, when the predetermined key is found, whether the effectiveness rule is satisfied; and a reading step of reading the value when the effectiveness rule is satisfied. Configuration debugging verification may be carried out in a very small range. When there is a problem in the configuration, the risks may be greatly reduced, thereby preventing a wider impact range.
Owner:LILITH TECH (SHANGHAI) CO LTD

A Text Adversarial Attack Method Based on Gaussian White Noise

The present invention provides a text adversarial attack method based on Gaussian white noise, belonging to the technical field of natural language processing. First, a natural language text is input into the model. After passing through the word embedding layer, the core layer, and the linear layer, the forward training loss is obtained, and the gradient is obtained through backpropagation. Then, several perturbation terms are added to the gradient of the word embedding vector to generate an adversarial sample, and the forward calculation of the loss value is continued. After multiple iterative trainings, the model can learn the optimal solution within a very small range of changes in the current vector. The perturbation terms prompt the update of the model parameters to move in the direction of increasing loss, achieving the purpose of attacking the model. In this process, the present invention makes the intensity of parameter update have a certain randomness within a set range by adding Gaussian white noise perturbation terms, so that the model has higher fault tolerance performance and improves the accuracy of the model.
Owner:SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD

Multifunctional precision calibration platform and calibration method for enterprise laboratory

The invention belongs to the technical field of equipment calibration, discloses a multifunctional precision calibration platform for an enterprise laboratory, and aims to calibrate different types of calibrated equipment. The high-precision positioning unit can ensure that the relative position error between the calibrated devices is controlled within a very small range, when the calibrated devices counteract the environment vibration, the damping floating device counteracts the environment vibration and suppresses vibration interference, and when the calibrated devices need specific environment temperature and humidity, the damping floating device counteracts the environment vibration and suppresses vibration interference. The temperature and humidity during calibration are adjusted in real time through the temperature and humidity adjusting unit according to the environment temperature and humidity, the platform can be flexibly combined according to the calibration requirements of different instruments, calibration of various laboratory instruments is achieved, the universality and multifunctionality of the platform are greatly improved, and the investment of enterprises in the aspect of calibration equipment is reduced.
Owner:ZHUCHENG METROLOGY TESTING INSTITUTE

Anti-vibration and anti-damage grounding suspension device for transformer substation

The invention relates to the technical field of grounding, and discloses an anti-vibration and anti-damage grounding suspension device for a transformer substation, the anti-vibration and anti-damage grounding suspension device comprises a U-shaped hook and movable openings formed in the two sides of the hook, clamping jaws are hinged in the two movable openings of the hook, and a torsion spring is mounted on a connecting shaft of the clamping jaws, so that the two clamping jaws clamp a cable towards the inner side together; and the inner side of the hook is provided with an elastic component which is in contact with the cable, so that the cable is in contact with the elastic component under the locking of the two clamping jaws, and the vibration of the cable and the damage to the cable can be avoided. The elastic component is of a composite structure, the elastic layer absorbs most vibration impact force through compression and resilience, the elastic metal assists in dispersing stress, and fatigue damage of the cable due to high-frequency vibration is avoided; the upper and lower clamping structures cooperate with the clamping force of the torsion spring, the vibration displacement amplitude of the cable is controlled within a small range, collision with peripheral equipment is prevented, and the fault risk is reduced.
Owner:GULIFA ELECTRIC +1

Computer automatic control test method based on interlocking route and interlocking function

The present invention provides a computer automatic control test method based on the perspective of interlocking route and interlocking function, including: issuing HMI operation instructions to the CBI configuration file at the beginning of the test phase, and the station state changes; changing the state of the relay, signal machine, section and switch according to the changed station state; issuing HMI operation instructions to the CBI configuration file again, and the CBI station state changes; determining that the IO point state is consistent with the expected route state, then passing the test. The present invention solves the defects of the existing single route inspection test with a small range and low accuracy.
Owner:CRSC WANQUAN SIGNAL EQUIP

Tool setting gauge mounting mechanism used on interpolation Y-axis machine type

The utility model discloses a tool setting gauge mounting mechanism used on an interpolation Y-axis model, which comprises a chuck side plate, a base mechanism is fixedly mounted on the right side of the chuck side plate, an adjusting mechanism is fixedly mounted on the right side of the base mechanism, and a tool setting gauge mechanism is fixedly mounted on the right side of the adjusting mechanism. According to the tool setting gauge mounting mechanism used on the interpolation Y-axis machine type, through the arrangement of the adjusting mechanism, a rotating handle can be rotated to enable a screw rod to rotate to drive a nut seat, a sliding table and a tool setting gauge mechanism to move, small-range position adjustment can be conveniently conducted on the tool setting gauge mechanism, and therefore it is conveniently guaranteed that a measuring probe of the tool setting gauge can be accurately aligned with a cutting edge of a tool; the adjusting mechanism can be conveniently and rapidly positioned and installed and fastened through a nut through cooperative use of a first guide column and a first guide hole, the tool setting gauge mechanism can be conveniently and rapidly installed on the sliding table through cooperative use of a second guide column and a second guide hole, the installation structure is simple and orderly, and machining is easy.
Owner:SUZHOU LIYAN MASCH TECH CO LTD

Crystal oscillator compensation method and device for cellular positioning and communication fusion system

This application provides a crystal oscillator compensation method and apparatus for a cellular positioning and communication fusion system, relating to the fields of communication and positioning technology. After the positioning module and / or communication module are started, this application determines the validity of historical information based on current environmental parameters. If valid, the historical error data is used as the current crystal oscillator error to reduce processing overhead caused by repeated estimation and shorten the preparation time after system startup. If the historical information is invalid and the positioning module is working, the crystal oscillator error is estimated through the communication module. This avoids the high time overhead, high processing complexity, and even malfunction caused by the positioning module directly performing large-scale time and frequency offset scanning within a large error range. This application allows the crystal oscillator error to converge to a smaller range before performing positioning processing, reducing the system's dependence on high-performance crystal oscillators while ensuring positioning and communication performance, which is beneficial for reducing terminal costs and power consumption.
Owner:XINYI INFORMATION TECH(SHANGHAI) CO LTD

Rigid circuit board

Owner:SUZHOU HONGWEIST ELECTRONIC TECH CO LTD

Ultra-large current source nonlinear fitting and multi-section temperature compensation method and device and medium

The invention relates to an ultra-large current source nonlinear fitting and multi-section temperature compensation method and device and a medium, and the method comprises the steps: dividing a total range of a current source into a large section of independent range and a small section of independent range according to a preset threshold value, configuring an independent sampling circuit with adaptive parameters, and shielding a small-range sampling circuit during wide-range work to eliminate interference; respectively executing multi-section linear calibration for the two sections of measuring ranges to generate exclusive calibration parameters; on the basis of negative correlation characteristics of temperature and current output, temperature compensation functions of all measuring ranges are fit, and targeted temperature drift compensation is achieved; finally, a final set value is calculated based on the calibrated intermediate set value and the temperature drift compensation amount, the current source is driven to output accurately, the full-scale output precision and stability of the ultra-large current source are effectively improved, and the requirements of high-precision testing and driving scenes are met.
Owner:SHENZHEN INTELLIWORK TECH CO LTD

Handle matching structure

The utility model discloses a handle matching structure which comprises a C-column decoration plate, a right rear side surrounding decoration plate and an auxiliary handle, a first groove is formed in the surface of the C-column decoration plate, a second groove is formed in the surface of the right rear side surrounding decoration plate, a first right protruding block is arranged at one end of the auxiliary handle and arranged in the first groove, and a second right protruding block is arranged at the other end of the auxiliary handle and arranged in the second groove. A second protruding block is arranged at the other end of the auxiliary handle and arranged in the second groove. According to the handle matching structure, the first groove in the C column decoration plate is precisely matched with the first protruding block at one end of the auxiliary handle, and the second groove in the right rear side surrounding decoration plate is precisely matched with the second protruding block at the other end of the auxiliary handle, so that the relative positions of all components can be effectively guided in the assembling process; the assembling tolerance between the C column decoration plate and the right rear side wall decoration plate is controlled within an extremely small range, tight attachment is achieved, the assembling accuracy and efficiency are improved, the reworking rate and the defective rate caused by the tolerance problem are reduced, and the production cost is reduced.
Owner:智行盒子(河南)科技有限公司

Safety scissors

The utility model relates to a pair of safety scissors, which comprises a front scissor piece and a rear scissor piece hinged with the front scissor piece. A limiting device is arranged between the scissor front piece and the scissor rear piece so as to limit the opening degree of scissor blades within a specific small range, and the scissor blade overlapping area of the scissor front piece and the scissor rear piece is limited between 0 mm and 2 mm. According to the scissors, the inherent thought of original scissors all the time is broken through, the mode that the front portion of a blade overlapping area is narrow and the rear portion of the blade overlapping area is wide when common scissors are closed is changed into the mode that the front portion and the rear portion of the overlapping area are consistent and narrow, and a sheared object can be conveyed to the inner ends of the two scissor blades only through small opening degree, so that shearing operation is more labor-saving, and shearing efficiency is improved. And some objects which are high in hardness, high in toughness and easy to slide out can be more conveniently sheared. And the limiting device is matched to limit the opening degree of the scissors, so that the safety is greatly improved, the safety purpose that the hands are not easily cut and scratched is achieved, and even children can also safely and conveniently operate the scissors.
Owner:薛清平

Transmission mechanism of detector

The utility model discloses a transmission mechanism of a detector, which comprises a frame, a lifting assembly, a support plate and a detection assembly, and is characterized in that the lifting assembly is mounted on the surface of one side of the frame; the supporting plate is fixedly connected with the output end of the lifting assembly, and the middle of the supporting plate is hollow. The bottoms of the two second mounting columns are longitudinally fixed to the upper surfaces of the two first mounting columns correspondingly, the outer wall of the fixed end of the second electric telescopic rod is connected to the middle of the fixing plate in a penetrating mode, the inductive probe is fixedly connected with the bottom of the telescopic end of the second electric telescopic rod, and the surfaces of the second mounting columns are fixedly connected with the bottom of the guide rail. The device solves the problems that when foreign matter information on different depth layers needs to be finely detected, the device can accurately position a preset optimal detection height, can control an error within an extremely small range, and can accurately capture sound wave signals reflected by underwater foreign matters.
Owner:CHANGZHOU INST OF MECHATRONIC TECH +3