56results about How to "Reduce chance" patented technology

The invention relates to the technical field of coal quality identification and monitoring, and discloses a coal quality dynamic detection method and system based on an image identification mining face, and the method comprises the steps: obtaining images of a first region, a second region and a third region of the mining face from top to bottom in the mining operation process of a coal mining machine; extracting stratification features from the first area image and the second area image to obtain a stratification line distribution diagram; based on the stratification line distribution diagram, calculating the maximum value of the interlayer spacing and the vertical coordinate variance; determining the uniformity of the coal seam based on the maximum value of the interlayer spacing; determining the flatness of the coal seam based on the vertical coordinate variance; based on the coal seam uniformity and the coal seam flatness, the coal seam quality is obtained; extracting geometric features of the third area image, and generating a bright spot distribution map; calculating the average area of the hot spots based on the hot spot distribution map; according to the average area of the bright spots, the crushing degree of the coal rock is determined, and then the quality of the coal rock is determined. According to the invention, the coal seam quality and the coal rock quality can be analyzed.

The invention provides an adversarial sample generation method and device based on multi-feature saliency map fusion, and aims to generate an adversarial sample with relatively high quality. The method comprises the steps of obtaining multiple pieces of sample data, dividing the multiple pieces of sample data into a training set, a test set and a verification set, and selecting optimal model parameters through the training set, the verification set and the test set; inputting any original sample into an artificial intelligence model, respectively obtaining a first feature saliency map and a second feature saliency map based on an interpretability method of gradient and disturbance, and carrying out fusion enhancement on the first feature saliency map and the second feature saliency map to obtain an enhanced feature saliency map; performing truncation and normalization processing on the enhanced feature saliency map to obtain a processed enhanced feature saliency map; based on a global gradient attack algorithm, obtaining global adversarial disturbance of the original sample; performing superposition processing on the global adversarial disturbance and the processed enhanced feature saliency map to obtain local adversarial disturbance of the original sample; and adding the local adversarial disturbance to the original sample to generate an adversarial sample.

According to the preparation method of the multi-layer piezoelectric ceramic actuator and the multi-layer piezoelectric ceramic actuator, a sacrificial layer is printed on a piezoelectric ceramic green ceramic chip, so that the thickness difference between an electrode area and an electrode missing area is made up; the problem that the edge of the co-fired interdigital multi-layer piezoelectric ceramic actuator shrinks inwards relative to the piezoelectric ceramic layer due to the fact that the edge of the inner electrode shrinks inwards, so that tensile stress is caused is effectively solved, and therefore the edge layering probability during lamination is effectively reduced; the sacrificial layer can be volatilized in the glue discharging and sintering process, a space can be reserved for subsequent filling of the flexible insulating paint, the flexible insulating paint is filled in the cavity formed after the sacrificial layer is volatilized, stress concentration is avoided, and the reliability of the piezoelectric ceramic actuator in high-frequency displacement change is improved.

The invention relates to the technical field of milk product detection, in particular to a working table applied to milk product detection, which comprises a working platform, an L-shaped fixing plate is fixed at the top of the working platform, vertical plates are symmetrically fixed at the top of the working platform and positioned in front of and behind the L-shaped fixing plate, and an adjusting mechanism is arranged at the bottom of a horizontal section of the L-shaped fixing plate. And a multi-stage electric push rod is installed at the bottom of the adjusting mechanism, a sampling mechanism is arranged at the pushing end of the multi-stage electric push rod, and positioning mechanisms are symmetrically arranged on the two vertical plates front and back with the adjusting mechanism as the center. The adjusting mechanism is adopted to adjust the position of the sampling mechanism, so that the sampling mechanism can be located in different areas to sample milk products, the representativeness of samples is further improved, a separation component in the sampling mechanism can be matched with an extraction component to extract the milk products at different depths and temporarily store the milk products, and the sampling efficiency is improved. Therefore, the representativeness of the sample is further improved.

The present invention relates to the technical field of solar encapsulation films, and provides a heat-conductive composite encapsulation film and a photovoltaic module. The heat-conductive composite encapsulation film is a composite encapsulation film after pre-crosslinking treatment, comprising a phase-change heat storage adhesive layer in contact with a solar cell sheet, a nano silver wire layer, and a heat-conductive adhesive layer in contact with a photovoltaic back plate or a front plate; the phase-change heat storage adhesive layer comprises a first resin and a phase-change heat storage material, the phase-change heat storage material is a paraffin microcapsule, and the addition amount thereof is 20-30% of the mass of the first resin; the heat-conductive adhesive layer comprises a second resin and a heat-conductive material, and the addition amount of the heat-conductive material is 10%-30% of the mass of the second resin; the first resin and the second resin are both EVA resins. The heat-conductive composite encapsulation film can effectively avoid the problems of reduced insulation and wet leakage performance and delamination caused by existing adhesive films in photovoltaic modules, and the heat storage and rapid heat conduction performance are effectively improved, and efficient cooling can be achieved, thereby improving the power generation and reliability of photovoltaic modules.

An electric moving body (10) comprises: a vehicle body (14); a drive source (16) for driving the vehicle body; a body battery (100) attached to the vehicle body; and a connection terminal (118) to which an attachable / detachable mobile battery (102) is electrically connected. Power is supplied from the mobile battery through the connection terminal to the body battery according to the voltage of the body battery.

This disclosure provides a light-emitting diode and its fabrication method, belonging to the field of light-emitting devices. The light-emitting diode includes: an epitaxial layer; the epitaxial layer includes an N-type semiconductor layer, a multiple quantum well layer, an electron blocking layer, and a P-type semiconductor layer stacked sequentially; the multiple quantum well layer includes multiple stacked light-emitting units, each light-emitting unit including a stacked first quantum well sublayer, a quantum barrier layer, and a second quantum well sublayer; the thickness of the first quantum well sublayer is less than the thickness of the second quantum well sublayer, the thickness of the quantum barrier layer is less than the thickness of the first quantum well sublayer, and the In content in the first quantum well sublayer is greater than the In content in the second quantum well sublayer.

Provided is an ultra fine bubble production device wherein the number of components can be reduced and a liquid current can be made to flow in a helical manner without reducing the flow rate of the liquid current. An ultra fine bubble production device (1) comprises: a pipe (25) through which a liquid is made to flow; a compression device (22) for pressure-feeding a gas into the pipe (25); and a gas bubble production medium (23) that releases the gas, which was pressure-fed by the compression device (22), into the liquid in the pipe (25) as ultra fine bubbles. The gas bubble production medium (23) is formed from a carbon-based porous material. The pipe (25) has a cylindrical side surface (25a) and circular end surfaces (25b), and a liquid current inflow port (25c) is provided in the side surface (25a). A circular column-shaped guide member (30) is positioned such that the liquid current from the liquid current inflow port (25c) is guided, and the guide member (30) has a helical guide groove (30ba).

The invention provides a method for predicting coarse grain defects on the surface of a high-strength aluminum alloy extruded profile, and relates to the field of aluminum alloy image processing. The method for predicting the surface coarse grain defects of the high-strength aluminum alloy extruded profile comprises the following steps: carrying out a hot extrusion experiment and a hot compression experiment; representing an extruded profile and a thermal shrinkage pressure sample to obtain a recrystallization fraction and a recrystallization grain average size; simulating a profile extrusion process and obtaining basic physical quantities of the profile; determining a function relationship between the physical field quantity and the recrystallization fraction and between the physical field quantity and the recrystallization grain average size through data fitting and linear regression, and establishing a prediction mathematical model; establishing a recrystallization grain growth rate model; and realizing surface coarse grain defect prediction of the extruded profile through numerical simulation. According to the method, the distribution position of the coarse grain defects on the surface of the aluminum alloy profile can be accurately predicted, the recrystallization degree, the grain size and the recrystallization grain coarsening rate of each position of the profile are independently quantified, and the coarse grain defects on the surface of the high-strength aluminum alloy extruded profile are accurately evaluated.

The utility model relates to the technical field of printing equipment, in particular to a multifunctional all-in-one machine which comprises a machine body, universal wheels and an assembling assembly, the universal wheels are installed on the lower surface of the machine body, a front cover plate is arranged in front of the machine body, the assembling assembly is arranged on the inner wall of the machine body, and a printing unit is arranged on the inner wall of the assembling assembly. A display screen is arranged in front of the machine body, the assembling assembly comprises a front mounting plate, the front mounting plate abuts against the inner wall of the machine body, the side surface of the front mounting plate is fixedly connected with a first guide plate, the side surface of the first guide plate is in bolted connection with a buckle plate, and the side surface of the front mounting plate is fixedly connected with a second guide plate. According to the utility model, through the arrangement of the assembling component, the maintenance and replacement operation of the equipment are more convenient, so that the problems that the disassembly efficiency is low and the maintenance operation efficiency of the equipment is easily interfered when screws are adopted for fixing are reduced, and the maintenance efficiency of the equipment is further improved.

A peripheral nerve stimulation system, comprising an percutaneous implanted lead (10), an adapter (20), a first cable (30), a stimulator (50) and a surface electrode, wherein the percutaneous implanted lead (10) can be inserted into the body of a patient through skin, and the percutaneous implanted lead (10) comprises a distal lead head (11) and a lead body (12) from a distal end to a proximal end, the distal lead head (11) comprising at least one electrode, the lead body (12) being formed by spirally winding at least one conductor wire (121), and the conductor wire (121) comprising a metal wire (122) and an insulating layer (123), which is arranged outside the metal wire (122) in a wrapping manner, such that the lead body (12) is of an open insulating spiral structure; the adapter (20) is electrically connected to the proximal end of the percutaneous implanted lead (10), the adapter (20) is electrically connected to the stimulator (50) by means of the first cable (30), and the stimulator (50) is used for sending an electrical stimulation pulse; and the surface electrode can be directly connected to the stimulator (50) or connected to the stimulator (50) by means of a second cable (72), and forms a stimulation loop together with the percutaneous implanted lead (10). By means of the peripheral nerve stimulation system, pain can be effectively suppressed, thereby improving the clinical treatment effect.

The invention relates to the technical field of ink, and discloses a preparation method of environment-friendly water-soluble engraved gravure ink, which comprises the following steps: placing porous short fibers in water, adding a surfactant, heating to 40-60 DEG C, and stirring to obtain a suspension; adding pigments into the turbid liquid in batches, fully stirring, standing, filtering, and drying the filtered material to obtain porous short fibers filled with the pigments; the preparation method comprises the following steps: selecting polyethylene glycol with a melting point of 35-60 DEG C, heating to melt, adding porous short fibers, slowly stirring, filtering, dispersing the porous short fibers, cooling at normal temperature, and slowly stirring and mixing with an anhydrous ink binder to prepare ink slurry; uniformly mixing water and an auxiliary agent to prepare a water-based diluent; before spraying, the ink slurry and the water-based diluent are mixed and are sprayed after being fully ground. According to the invention, the nano pigment is blocked in the porous short fiber, the pigment in the ink paste cannot diffuse out from surface micropores of the porous short fiber, and the porous short fiber is stably dispersed, so that the problem of pigment agglomeration and precipitation is avoided.

Provided is a printhead comprising an internal microfluidic channel, comprising a print base and a printhead die. The print base comprises a liquid inflow channel (100), a liquid outflow channel (200) and a storage slot (300); the liquid inflow channel (100) and the liquid outflow channel (200) are communicated with the storage slot (300); the printhead die (500) is packaged on the surface of the print base, the printhead die (500) is communicated with the storage slot (300) to form an internal microfluidic channel, and the accommodating space of the internal microfluidic channel is equal to a one-time filling amount of print liquid of the printhead. By means of the internal microfluidic channel, the printhead enables the old print liquid to be pushed out at one time, such that the probability that the print liquid is polluted is greatly reduced, and the problem that it is difficult to discharge the print liquid is solved; the internal microfluidic channel having a small accommodation space is provided, such that use cost of the print liquid is greatly saved; a one-way flow path is formed between the liquid inflow channel having a small cross-sectional area and the liquid outflow channel, and due to large pressure in the one-way flow path, the flow speed is high, such that the liquid discharging rate can be increased.

The invention provides a germinated seed screening device and method based on machine vision, and the method comprises the steps: collecting a plurality of stage images of a seed disc, marking the position of a seed in each stage image, determining a plurality of key analysis positions in the seed disc, obtaining the image information of each key analysis position in different stage images, and obtaining the image information of each key analysis position; determining a seed growth trend corresponding to the key analysis position, further analyzing an estimated germination time period corresponding to each seed, obtaining seed state characteristics in the estimated germination time periods, and further determining a planting position corresponding to each germinated seed in the seed disc by using the seed state characteristics; the planting position is marked, a seed germination report is generated and transmitted to the designated terminal for display, the germinated seeds can be recognized from many seeds through the image recognition technology, the manual pressure is reduced, the manual workload is reduced, and the screening accuracy is improved.

The invention relates to an object classification method and device based on Raman surface enhanced spectroscopy, and a medium, so as to improve the classification accuracy of a detected object. The method comprises the following steps: acquiring sample data of a detected object, wherein the sample data of the detected object is a Raman surface enhanced spectrum obtained by performing Raman surface enhanced spectrum measurement on a mixture obtained by mixing serum of the detected object and colloidal gold nanoparticles; and processing the sample data of the tested object through a pre-trained support vector machine model to obtain a category corresponding to the tested object.

This application provides an electrochemical apparatus and an electronic apparatus. The electrochemical apparatus includes: a negative electrode, where the negative electrode includes a negative electrode current collector, and a negative electrode active substance layer is provided on a surface of the negative electrode current collector; a positive electrode, where the positive electrode includes a positive electrode current collector, a positive electrode active substance layer is disposed on a surface of the positive electrode current collector, and an insulating layer is disposed on a surface of the positive electrode current collector close to a tab portion; and a separator; where an outer edge of the negative electrode active substance layer is further outward than an outer edge of the positive electrode active substance layer at a facing position; and an inner edge of the insulating layer is in contact with or partially overlaps with the outer edge of the positive electrode active substance layer, and an outer edge of the insulating layer is flush with the outer edge of the negative electrode active substance layer or is further outward than the outer edge of the negative electrode active substance layer. This application is intended to reduce burrs and debris caused by cutting, effectively reduce the impedance in the edge region of the negative electrode, enhance the kinetics of the edge of the negative electrode, alleviate lithium precipitation at the edge of the negative electrode, and reduce the chance of fire or explosion in the electrochemical apparatus.

An apparatus for monitoring the usage of at least one maintainable part or component of a transfer valve or coupling comprises : data storage means for storing data representative of at least one attribute of the maintainable part or component of the valve or coupling; monitoring means for monitoring usage of the valve or coupling; and processing means for comparing the monitored usage of the valve or coupling against the at least one attribute of the maintainable part or component of the valve.

The present invention discloses a Bluetooth headset, a system and a method for gesture recognition thereof. The Bluetooth headset comprises a radar device and a headset processor, wherein the radar device is used to detect hand gestures and the position of the hand relative to the radar device; the headset processor is used to determine whether the first gesture detected by the radar device is a first preset gesture, whether the position of the hand is within the first preset position range, and whether the time the hand stays at its position and the time the hand maintains the first preset gesture are within the preset time range. If all are yes, then continue to determine whether the second gesture subsequently detected by the radar device is a second preset gesture. If it is a second preset gesture, then parse the second gesture into an instruction corresponding to the second preset gesture; wherein the first preset gesture is different from the second preset gesture. The present invention can reduce the probability of radar falsely triggering gesture operations and improve user experience.

An elevator system (2, 102) comprises an elevator car (4, 104), a tag detection device (16, 116) arranged to detect the presence of tags (18, 20; 118, 120) in the elevator car (4, 104) and a control system (13). The control system (13) is arranged to determine if the tag detection device (16, 116) detects at least one of a set of associated tags (18, 20; 118, 120) present in the elevator car (4, 104) and, if at least one of the set of associated tags (18, 20; 118, 120) is detected in the elevator car (4, 104), to prevent at least one travel operation of the elevator car (4, 104) until all or none of the set of associated tags (18, 20; 118, 120) is detected to be present in the elevator car (4, 104).

A detection method and apparatus may be applied to the fields such as automated driving and intelligent driving, and in particular, to detection of a laser sensor. The method includes: controlling a transmitter to transmit a plurality of laser pulses in each subframe of a first frame, where each subframe is corresponding to a group of distance subintervals, and the first frame includes a plurality of subframes; controlling a detector to receive a plurality of signal pulses, where the plurality of signal pulses includes reflected signals for the plurality of laser pulses, and each of the plurality of signal pulses is corresponding to one distance subinterval in the group of distance subintervals; and determining information about a target object in a same distance subinterval based on signal pulses that are in the plurality of signal pulses and that are corresponding to the same distance subinterval. This method effectively improves detection performance of a LiDAR.

The invention provides a straight comb structure, which is a tool for combing hair and disassembling hair knots and hair knots, is integrally made of sheet metal, and comprises a handle part which is a semi-open frame body with a groove and is provided with a holding part which is twisted on a handle part body and is in a sheet shape; the comb part is provided with a plurality of comb needles which are arranged in the groove of the handle part; by means of the structure and the attributes of the adopted materials, the rigidity of the thin straight-row comb structure can be enhanced, the operability of combing hair is improved, the thin straight-row comb structure can be disinfected and sterilized to improve sanitation and safety, and diseases are not prone to being infected.

The utility model discloses a cable protection sleeve extrusion test tool, which comprises a test board and a moving assembly, the top surface of the test board is fixedly provided with a bearing plate, the side surface of the bearing plate is fixedly provided with an electric cylinder, the telescopic end of the electric cylinder is provided with an extrusion block, and a clamp is arranged above the test board. According to the utility model, the plurality of extrusion test stations are arranged, so that extrusion tests can be carried out on a plurality of cable protection sleeves at the same time, the extrusion test efficiency of the cable protection sleeves is improved, the contingency of test results is reduced, and the extrusion test results of the cable protection sleeves are more accurate. According to the cable protection sleeve extrusion test tool, the moving assembly is arranged, so that the whole cable protection sleeve extrusion test tool can be conveniently moved, after the cable protection sleeve extrusion test tool is moved to a proper position, the plurality of moving wheels are separated from the ground and stored in the supporting frame, and the supporting frame is in contact with the ground, so that the moving wheels are prevented from rolling; the stability of the whole cable protection sleeve extrusion test tool in the using process can be improved.

A latching assembly for latching the moving conductor assembly of a circuit interrupter after an opening stroke includes a streamlined latch that omits components commonly prone to damage during latching operations in existing latching assemblies. The disclosed latching assembly comprises a fixed latch block, a driven latch rotatably coupled to the latch block, and a pivoting hammer with a square pin positioned to always be engaged with the driven latch. The latching assembly is structured to be engaged by a switch shaft once an opening stroke is initiated. When the latching assembly engages, the hammer square pin pushes the driven latch into engagement with a shelf formed in the switch shaft, which prevents the switch shaft from rebounding after the opening stroke. Rebounding is further prevented due to the hammer being structured to be biased toward the open state once the driven latch has engaged the switch shaft shelf.

The invention relates to a method for constructing a portal coin public chain simulation system, and the method comprises the steps: modifying and reconstructing a monero 0.18. 2.2 version open source code of a portal coin client, and making a portal coin node mirror image; the method comprises the following steps: establishing a Kubernetes main node and working node cluster on the basis of a Kubernetes container arrangement platform, deploying a portal node container to a Kubernetes working node by using a portal node mirror image, automatically distributing a node IP address by using an IPPool provided by a Calico plug-in, and establishing mapping between the node IP address and a geographic position; persistently storing node data by using a PV persistent volume; simulating all nodes, light nodes and seed nodes of the Momena, and automatically establishing a network topology; cPU resource generation blocks are distributed in a user-defined mode; automatically generating a gate coin account based on the exponential distribution; the invention relates to automatically creating portal coin transactions based on exponential distributions. According to the method, large-scale container arrangement is carried out based on a Kubernetes platform, simulation of nodes, accounts, transactions and block generation of the portal-roundcoin is supported, and the scale and authenticity of portal-roundcoin public chain simulation are improved.

This utility model relates to the field of experimental instruments for insect chemical ecology, and particularly to a device for studying visual behavior selection experiments in small and medium-sized insects. The device includes a lower base plate, an upper base plate, and an insect light source activity chamber. Preferably, the lower and upper base plates are rectangular transparent acrylic plates. The advantages of this utility model are: it breaks through the limitations of traditional visual behavior selection experiment devices, enabling the screening of insect preferences for different wavelengths of light sources and for different colors. Furthermore, individual light source activity chambers can be flexibly combined according to actual experimental designs, and their positions can be randomly changed during repeated experiments, reducing the randomness of the experiment. Data can be collected by rotating the base plate for observation and counting. The device has a novel design, low cost, and simple operation.

A bending section and insertion tube connecting structure (100), and an endoscope. The bending section and insertion tube connecting structure (100) comprises: a bending section (110), provided with first clamping portions (111) in the circumferential direction; a connecting tube (120), connected to the bending section (110) in a sleeving way and provided with second clamping portions (121) in the circumferential direction, the first clamping portions (111) being snap-fitted with the second clamping portions (121), such that the bending section (110) is connected to the connecting tube (120); and an insertion tube (130), bonded with the connecting tube (120). In the bending section and insertion tube connecting structure (100) and the endoscope, the connecting tube (120) and the bending section (110) are connected in a sleeving way and also connected by means of snap fit, thereby reducing the probability that the first clamping portions (111) and the second clamping portions (121) are broken by an external force, and ensuring the overall structural stability of the bending section and insertion tube connecting structure (100). Meanwhile, the connecting tube (120) is bonded with the insertion tube (130), such that the bending section (110) and the insertion tube (130) are connected in an indirect contact way, thereby avoiding the risk of fall of the bending section (110) due to low stability of direct bonding.

The application discloses a sampling device for water pollution detection and belongs to the technical field of sampling devices, which comprises a support frame, a first lifting plate is slidably arranged on the support frame, a support plate is fixedly connected to the first lifting plate, a reciprocating screw rod is rotatably connected to the support plate, a first sliding rod is threadedly connected to the reciprocating screw rod, a first fixed plate is fixedly connected to the first sliding rod, one end of the first fixed plate is fixedly connected to a first guide rod, the other end of the first fixed plate is fixedly connected to the outer side wall of a fixed ring, a sampling cylinder is fixedly installed in the fixed ring, and multiple groups of sampling cylinders can simultaneously perform sampling work at the same depth through cooperation of the first guide rod and the second guide rod, and multiple groups of sampling cylinders can simultaneously perform integral movement through cooperation of the reciprocating screw rod, so that the sampling cylinders can perform multiple-point sampling work in a sewage pool, and sampling efficiency and detection representativeness are improved.

The utility model relates to the technical field of powder apparent density, and discloses a device capable of measuring the powder apparent density for multiple times, which comprises a funnel arranged at the top of a rack, a measuring cup component arranged in the rack and a weighing component positioned at the bottom of the rack, the upper end of a transmission shaft of the measuring cup assembly is rotationally connected to the top of the rack, and a discharging opening of the funnel is located above a feeding opening of the measuring cup assembly; the measuring cup assembly comprises an upper measuring cup, a middle measuring cup and a lower measuring cup, cavities in the upper measuring cup and the middle measuring cup are through cavities, a group of diagonal cavities in the lower measuring cup are provided with bottom plates, and the other group of diagonal cavities in the lower measuring cup are through cavities; and the lower end of the transmission shaft is in transmission connection with the upper measuring cup, the middle measuring cup or the lower measuring cup through a connector. The powder apparent density measuring device overcomes the defects of an existing powder apparent density measuring device, multiple times of measurement can be achieved after one-time filling, measurement contingency is reduced, and the powder apparent density can be accurately obtained.