9results about How to "Reduce chance" patented technology

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.

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).

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.

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.

This invention relates to a method, device, and medium for detecting hardware Trojans in RTL (Real-Time Linked Volume) based on one-dimensional byte streams. It belongs to the field of integrated circuit hardware security detection technology and addresses the problems of linear displacement sensitivity and hyperparameter dependence in RTL hardware Trojan detection. First, multiple RTL files are concatenated into a single file in a deterministic order, and a traceable boundary table is generated accordingly. Then, the RTL to be tested and the Golden reference are read into unsigned 8-bit integer sequences. Global sliding matching is performed on the test sequence over the entire reference sequence using a fixed-length window. The minimum absolute difference (SAD) is used as the similarity metric to find the best correspondence of each window in the reference sequence. Finally, the minimum SAD of all windows is concatenated into a one-dimensional difference curve. The Trojan's disturbance to the structure will appear as a high signal-to-noise ratio spike, fundamentally avoiding the problem of long step jumps that are difficult to locate in two-dimensional methods when encountering linear displacements caused by insertion / deletion.

The application discloses a kind of underwater concrete crack detection and grouting repair equipment, it is related to concrete structure repair technical field.The specific bottom bracket, shell, propeller, crack detection component, multiple Mcleod wheels, electric push rod and push plate are included, one side of shell is connected with telescopic pipe, the bottom of push plate is provided with the nozzle that the telescopic end of telescopic pipe is communicated, the bottom of push plate is provided with anti-shielding mechanism;Anti-shielding mechanism includes fixed plate, electric telescopic rod, moving plate and multiple cutting blocks, moving plate and push plate sliding fit.The anti-shielding mechanism of the application, by electric telescopic rod, moving plate, cutting block are cooperated, waterweeds and flexible garbage in front of nozzle are cut, broken, reduce the probability that waterweeds and flexible garbage cover to the surface of nozzle, so as to reduce the probability that waterweeds and flexible garbage are taken into crack together by nozzle in grouting process.

The application discloses a basalt fiber drawing adjusting method, system, device and medium, relates to the basalt fiber drawing control technical field, and comprises the following steps: obtaining the melt viscosity in the casting furnace; judging whether the melt viscosity is within the range of the preset viscosity threshold value, if yes, returning to obtaining the melt viscosity in the casting furnace, if not, continuously obtaining multiple drawing state images of the basalt fiber in unit time; according to the multiple drawing state images, identifying whether there is a drawing abnormal feature, if not, returning to obtaining the melt viscosity in the casting furnace, if yes, obtaining a first temperature adjusting parameter; wherein the first temperature adjusting parameter is used for adjusting the melt temperature in the casting furnace; the first temperature adjusting parameter is input into a viscosity-temperature initial curve of a drawing process to obtain a viscosity-temperature target curve, and the application has the advantages of self-adaptive adjustment and improved adjusting efficiency.

This invention discloses an automatic planning method, apparatus, and equipment for indoor point cloud data acquisition sites in buildings. The method includes: acquiring a BIM model of the building to be inspected; extracting geometric information and topological relationships of target components from the BIM model, where the target components include rooms and doors; determining the ordinate of the scanning site and the concavity / convexity of the room boundaries of the building to be inspected based on the geometric information and topological relationships; determining the abscissa of the scanning site based on the ordinate and the concavity / convexity of the room boundaries; and determining the location of the scanning site based on the ordinate and abscissa. This achieves automatic planning of scanning sites, greatly improving scanning efficiency, reducing labor costs, and also reducing the difficulty of interpreting drawings in engineering projects. The scanning site plan is more easily accepted by personnel from different fields or professions, and it solves the drawbacks of traditional manual scanning that relies solely on human experience for judgment, reducing randomness and errors.

The application relates to the technical field of data processing, in particular to an underwater robot fault identification method and system, which comprises the following steps: acquiring a plurality of operation data sequences; obtaining a plurality of data combinations according to the operation times, values and positions in the operation data sequences of each operation data; obtaining the correlation dimension of each dimension, the correlation relationship between each dimension and the correlation dimension and the power relationship between the value of the operation data of each dimension and the value of the operation data of the correlation dimension according to the value and time of the operation data of each dimension in each data combination; obtaining the abnormal data of each dimension according to the value of each operation data, obtaining the fault data according to the power relationship between the value of each operation data of each dimension and the value of the operation data of the correlation dimension, and completing the anomaly detection. The application aims to solve the problem that the values obtained through sensors cannot distinguish robot faults from sensor faults.