9results about How to "Realize dynamic detection" patented technology

The application provides a material dust detection method and device based on a friction nanogenerator, and belongs to the technical field of dust detection. The method comprises the following steps: respectively dropping material particle samples with different dust contents from a hopper, measuring the electric signal strength or variation generated by the friction between the material particle samples and the friction nanogenerator when the material particle samples fall in the hopper, determining the corresponding relationship between the dust content value of the material particle samples and the electric signal strength or variation, and taking a curve representing the corresponding relationship as a dust content and electric signal contrast relationship curve; dropping a material particle to be detected from the hopper, and measuring the electric signal strength or variation generated by the friction between the material particle to be detected and the friction nanogenerator when the material particle to be detected falls in the hopper; and determining the dust content value of the material particle to be detected according to the electric signal strength or variation generated by the friction of the material particle to be detected and the contrast relationship curve. The application can realize dynamic monitoring and real-time detection of the dust content in material production.

The invention relates to the technical field of high-elasticity wear-resistant cotton elastic fabric, in particular to elasticity detection equipment for high-elasticity wear-resistant cotton elastic fabric and a detection method thereof.The elasticity detection equipment comprises a fabric conveying seat, an elasticity detection mechanism is arranged in the middle of the top of the fabric conveying seat, and the fabric conveying seat comprises a bottom plate; according to the high-elasticity wear-resistant cotton elastic fabric elasticity detection device, by arranging the fabric conveying base and the elasticity detection mechanism, dynamic detection of the elasticity of the high-elasticity wear-resistant cotton elastic fabric is achieved. A double-roller linkage structure is adopted, a tension gradient is formed through synchronous reverse movement of a pull-down roller and a pushing roller, and a high-precision optical scanning technology of a scanning inclined plate is matched, so that stress-strain curves of cloth in different deformation stages can be obtained in real time. In the detection process, a built-in control system of the equipment can automatically adjust the rotating speed of the motor according to preset parameters, and the stability and repeatability of the tension applying process are ensured. Compared with a traditional detection method, the equipment improves the detection efficiency.

The invention discloses a construction method and device for a mobile robot map and a storage medium, and belongs to the technical field of positioning and mapping. The construction method comprises the following steps: acquiring a current measurement point cloud and a current prediction pose of the mobile robot at a current moment; performing normal distribution transformation matching on the current measurement point cloud and a point cloud corresponding to the current prediction pose on a pre-constructed global voxel map to obtain a point cloud global matching residual error; performing iterative nearest point matching on the current measurement point cloud and a point cloud corresponding to a current prediction pose on a pre-constructed local dense map to obtain a current observation pose and a point cloud local matching residual error; determining a current actual pose according to the current observation pose, the current prediction pose and the point cloud local matching residual error, and obtaining a current actual point cloud matched with the current actual pose; and constructing a mobile robot map according to the current actual pose and the current actual point cloud. The method is used for improving the construction precision of the mobile robot map.

The utility model provides efficient mold capacity detection equipment, and belongs to the technical field of beer bottle production. Comprising a bottom plate, a vertical frame is fixedly connected to the top of the bottom plate, an air cylinder is fixedly connected to the top end of the vertical frame, a fixing column is fixedly connected to the bottom of the air cylinder, edge grooves are formed in the two sides of the fixing column, and rotating arms rotationally connected to the bottom ends of the edge grooves can be stored in the edge grooves; through mechanical linkage of the rotating arm, the spring, the abutting blocks and the sliding rod, dynamic detection of the diameter of the inner cavity of the die is achieved, the device can make contact with the two ends of the inner cavity of the die through the abutting blocks on the two sides, the inner cavity extrudes the abutting blocks, the abutting blocks can be allowed to move through the spring, the sliding rod is driven to move, and the displacement amount of the sliding rod is detected through the displacement sensor. By means of the structure, the problem of errors caused by reflection or transparency of glass in traditional optical detection is avoided, and the practicability of equipment is improved.

The utility model relates to the technical field of mines, in particular to a mine dust detection device, which adopts the technical scheme that the mine dust detection device comprises a bottom plate, a screw block and a retainer, a screw sleeve is movably mounted at the top of the bottom plate, a stud is fixedly mounted at the bottom of the retainer and is in meshed connection with the screw sleeve, and a screw rod is movably mounted on the retainer and is in meshed connection with the screw sleeve. The screw block is in meshed connection with the screw rod, a servo motor is installed on the side face of the retainer, a bearing plate is installed on the top of the screw block, fixing plates are welded to the two sides of the top of the bearing plate, screw holes are formed in the two fixing plates, and screw rods are in threaded connection with the inner walls of the two screw holes; the opposite ends of the two screw rods are movably provided with clamping plates, and the opposite sides of the two clamping plates are fixedly provided with a detection device body in a clamping manner. The detection device has the advantages that the height of the detection device body can be adjusted, the detection device body is driven to transversely move back and forth for maintenance, dynamic detection is further realized, the detection range is expanded, and the operation difficulty is reduced.

The utility model discloses a portable contact net dynamic inspection device, including the walking mechanism of direct erection on the rail, and the rack of walking mechanism still includes binocular detection module, binocular detection laser, pendant imaging module, suspension imaging module and limit detection module, binocular detection module symmetry sets up on the upper surface of both sides of rack, and binocular detection laser sets up in the upper surface middle part of rack, and pendant imaging module symmetry sets up on the upper surface of both sides of rack and forms the opposite direction of imaging, and limit detection module sets up in the upper surface middle part of rack close to binocular detection laser, and suspension imaging module sets up between pendant imaging module and limit detection module. The utility model can realize dynamic detection to contact net geometric state, suspension state and limit state simultaneously, and the structure is reasonable, compact, and the function integration degree is high, and the installation and use are convenient and flexible, and the whole operation of installation, use and recovery can be completed only by less manual operation on the spot.

The utility model discloses a kind of rock wool board size monitoring devices, relate to rock wool board production detection technical field.The device includes laser displacement sensor group, positioning device, pneumatic execution device and control system.Laser displacement sensor group is by symmetrically arranged width sensor, top thickness sensor and rear length sensor composition, realize long, wide, thick three-dimensional synchronous non-contact measurement.Positioning device is fixed rock wool board by baffle and clamping pneumatic cylinder, and pneumatic execution device includes lifting mechanism and sorting push rod.Control system uses PLC real-time analysis sensor data, triggers acousto-optic alarm when out-of-tolerance and eliminates unqualified product.The device uses modular design, adapts to different specifications rock wool board, solves the problem of traditional detection efficiency, single dimension and complex mechanical structure, significantly improves detection precision and production adaptability.

The invention discloses a dynamic detection method for the mechanical property of an in-service pavement, and belongs to the technical field of pavement mechanical property detection, and the method comprises the following steps: based on vehicle-road coupling dynamics, determining the interference quantity of vehicle and road vibration in vehicle-mounted sensor test data on a walking device, and further improving the test precision of road response quantity; on the basis of impact dynamics, a load applying excitation assembly for the road surface is designed, and quantitative excitation of the road surface is achieved; based on vehicle dynamics and in combination with a modulus inversion method, the mechanical properties of the in-service pavement layered system are calculated. According to the invention, dynamic detection of the mechanical properties of the pavement can be realized, the detection interval can be adjusted according to different requirements, the dynamic stability of the walking device under multiple working conditions is analyzed, a stable test platform is provided for dynamic detection of the mechanical properties of the in-service pavement, and the detection efficiency and precision are both considered.

The utility model belongs to detection circuit technical field relates to a kind of nonlinear temperature drift dynamic bias detection circuit of vehicle-mounted audio power amplifier, including PTAT circuit, NTC circuit, A2B bus, difference operational amplifier circuit, voltage divider network, audio signal amplification circuit and its connection relationship.The utility model carries out mixed temperature detection by integration PTAT circuit and NTC circuit, then carry out difference design to eliminate non-linear error, generate compensation voltage V comp , temperature sampling of multiple temperature nodes is triggered by A2B bus protocol synchronization signal, temperature sampling and audio data time domain alignment are realized, and compensation voltage V comp It is injected into the voltage divider network of MP7722DF power amplifier chip REF pin, and bias voltage dynamic detection is realized.