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758results about How to "Meet job requirements" patented technology

Parallel mechanism of four-degree-of-freedom dual acting platform

The invention relates to a parallel mechanism of a four-degree-of-freedom dual acting platform, belonging to the field of industrial robots. The parallel mechanism comprises a fixed platform, a movable platform, and four branches for connecting the fixed platform and the movable platform, wherein the movable platform comprises an upper movable platform and a lower movable platform, which are parallel, and further comprises a connecting mechanism for connecting the upper movable platform and the lower movable platform, a rotating mechanism, and an end effector; the connecting mechanism comprises three or four planar quadrilateral mechanisms, which are uniformly arranged and connected between the peripheries of the upper movable platform and the lower movable platform. According to the invention, by adopting the planar quadrilateral mechanisms, the upper movable platform and the lower movable platform are reasonably connected, and the mechanism has effective supporting and guiding actions; by utilizing the over-constrained characteristic and the high rigidity characteristic, when the upper platform and the lower platform move relatively, the directional stress is uniform and the rigidity is unchanged, and the rigidity and the stability of the parallel mechanism of the integrated machine are improved; furthermore, the motions of the quadrilateral mechanisms are in the respective plane, so that the structure is more compact.
Owner:TSINGHUA UNIV

Split type multi-roller multi-component high-gradient vibration magnetic separator in permanent magnetism

The invention relates to a permanent magnetic midsplit type multi-roller multivariate high gradient vibration magnetic selector, which comprises a stander (12), a magnetic selection box body arranged above the stander (12) through a vibration reduction spring set (18), a plurality of permanent magnetic rollers arranged inside the magnetic selection box body, a feed hopper (22) positioned on the top of the magnetic selection box body and a feed discharging passage (17) positioned on the bottom of the magnetic selection box body. The vibration magnetic selector is characterized in that the permanent magnetic rollers are made from magnetic materials with different magnetic strengths; according to a two-dimensional matrix form, the plurality of the permanent magnetic rollers are arranged to construct a multivariate sorting magnetic field; the permanent magnetic rollers made from the magnetic material of the same type are positioned on the same plane; according to the magnetic strengths, the permanent magnetic rollers with different magnetisms are in deltaic alternate arrangement sequentially from top to bottom along the flowing direction of the materials; magnetic concentrating medium grooves with the same specification are arranged between the adjacent permanent magnetic roller layers in different layers and above the upper layer of the permanent magnetic roller layers; and the inside of each groove is provided with magnetic concentrating media with different types.
Owner:HENAN POLYTECHNIC UNIV

Health service robot capable of achieving electroencephalogram detection

ActiveCN105078450AImprove mobile portabilityConvenient medical testingDiagnostic recording/measuringSensorsEnvironmental perceptionSimulation
The invention discloses a health service robot capable of achieving electroencephalogram detection. The health service robot comprises a robot body, a main control unit, a motion control unit, a binocular vision capture unit, a man-machine interaction unit, an environmental perception sensor unit, a power supplying unit and a medical treatment detection unit; the medical treatment detection unit comprises an electroencephalogram detection device independent of the robot body; the main control unit is connected with the motion control unit, the binocular vision capture unit, the man-machine interaction unit, the environmental perception sensor unit and the medical treatment detection unit through bus communication protocols and serial communication protocols; the power supplying unit is used for supplying power for the main control unit, the motion control unit, the binocular vision capture unit, the man-machine interaction unit and the environmental perception sensor unit. The health service robot is combined with the electroencephalogram detection device, a robot moving technology and a medical treatment detection technology, and therefore the movable and portable properties of the electroencephalogram detection device can be improved to a large extent.
Owner:广州迅合医疗科技有限公司

Wide-dynamic-range high-temperature superconducting magnetometer

The invention relates to a wide-dynamic-range high-temperature superconducting magnetometer comprising a superconducting quantum probe, a liquid nitrogen Dewar flask, a readout circuit, a data collection system and a micro-processor, wherein the superconducting quantum probe is arranged in a Helmholtz coil, more particularly, the superconducting quantum probe is connected with the Helmholtz coil via the liquid nitrogen Dewar flask, the readout circuit, the data collection system, the micro-processor, a constant-current source gear-selecting circuit and an adjustable constant-current source; and the readout circuit is formed by connecting a signal processing circuit with the constant-current source gear-selecting circuit. By using the standard magnetic field generated by the Helmholtz coil, part of the external magnetic field to be measured can be neutralized, and the value of the residual magnetic field to be measured after neutralization can be always within the dynamic range of the high-temperature superconducting magnetometer, the actual value of the magnetic field to be measured can be obtained by adding the value of the neutralized magnetic field to the detection value of the high-temperature superconducting magnetometer, thus preventing the sensitivity and accuracy of the high-temperature superconducting magnetometer from being reduced, widening the dynamic range thereof and meeting the operation requirements thereof within various measurement environments. Above all, the high-temperature superconducting magnetometer is suitable for the geophysical exploration in field sections where the electromagnetic interference is high.
Owner:JILIN UNIV

Lightweight semantic segmentation method based on multi-scale visual feature extraction

PendingCN112634276ASatisfy Semantic Segmentation RequirementsMeet job requirementsImage enhancementImage analysisNetwork testingImage resolution
The invention discloses a lightweight semantic segmentation method based on multi-scale visual feature extraction, and the method comprises the following steps: network building: firstly building a lightweight convolutional neural network LitNet based on multi-scale feature extraction, extracting image features through a feature extractor, transmitting the features to a spatial pyramid module fused with hole convolution to extract multi-scale features of the image, and finally completing the feature integration through a simple up-sampling module to recover the image resolution; network training: employing a Tensorflow framework for building a network structure, employing a cross entropy function as a loss function, employing an Adam algorithm for optimizing training parameters, and adopting an early stop strategy in the training process to prevent network training overfitting so as to achieve the optimal training effect; network testing: inputting the test image into the network to obtain a semantic segmentation result, calculating mIoU and FPS, and evaluating the network performance. Through testing, the model size on the CamVid data set is 10M, the mIoU is 70.24%, the 34FPS can be reached, and the real-time segmentation requirement can be met.
Owner:XIAN UNIV OF TECH

System and method for high-speed railway subgrade settlement restoration

The invention discloses a system and method for high-speed railway subgrade settlement restoration. The system comprises at least eight lifting components, at least eight hydraulic lifting devices, a hydraulic distribution device, an automatic control system and a grouting device, wherein the at least eight lifting components are arranged at preset lifting points on a base plate, and every lifting component comprises a connecting part and a lifting part; every hydraulic lifting device is arranged between a high-speed railway subgrade and the lifting part of the lifting component; the hydraulic distribution device is connected with every hydraulic lifting device through hydraulic pipelines; the automatic control system controls the hydraulic distribution device to provide preset hydraulic pressure for every hydraulic lifting device so as to lift the base plate to a preset height of the high-speed railway subgrade; and the grouting device pours slurry in gaps formed between the base plate and the high-speed railway subgrade through slurry pipelines so as to support the base plate after the slurry is solidified. The invention further provides a method for track plate and base plate integrated lifting type high-speed railway subgrade settlement restoration.
Owner:北京中铁瑞威基础工程有限公司

Secondary adjustable boosting control system and control method thereof

The invention discloses a secondary adjustable boosting control system. The secondary adjustable boosting control system comprises a high-pressure booster with a variable-section spray nozzle, and a low-pressure booster, which are connected in series, wherein the low-pressure booster comprises a low-pressure air compressor and a low-pressure turbine; a low-pressure intake by-pass valve and a low-pressure exhaust regulating valve are respectively arranged on by-pass pipelines of the low-pressure air compressor and the high-pressure turbine; the high-pressure booster comprises a high-pressure air compressor and a high-pressure turbine; and the high-pressure turbine is equipped with the variable-section nozzle and a high-pressure exhaust regulating valve is arranged on a by-pass pipeline connected in parallel with the high-pressure turbine. The invention further discloses a control method of the control system, and can realize supercharge pressure adjustment of a diesel engine at different altitudes and under different working conditions through controlling the opening and closing, as well as the opening degree, of all valves and utilizing the MAP value to achieve adjustment in a negative feedback mode so as to achieve the goal that the power of the engine at the altitude of 5,500 calibration point restores to 90 percent of the calibration point under the plain condition.
Owner:MILITARY TRANSPORTATION UNIV PLA

Long bone resetting robot in series-parallel connection

The invention discloses a long bone resetting robot in series-parallel connection, which comprises a serial connection part and a parallel connection part, wherein the serial connection part comprises a near-end fixing mechanism and a far-end fixing mechanism which are connected or disconnected through a positioning rod; each of the near-end fixing mechanism and the far-end fixing mechanism comprises a fixing plate, a locking bolt, a connecting rod, a connecting rod mounting base, a bracket rod and a latch clamping mechanism; the latch clamping mechanism comprises a connecting bolt and a latch; the parallel connection part comprises a far-end platform panel, a far-end platform connecting plate, a far-end platform pressing plate, a near-end platform panel, a near-end platform connecting plate, a near-end platform pressing plate and a stretching rod mechanism; and the stretching rod mechanism comprises a connecting hinge, a sleeve and a connecting rod. The long bone resetting robot in series-parallel connection is mainly used for realizing a function of assisting the resetting of long bone fracture by the robot under a closed condition. The long bone resetting robot in series-parallel connection has the characteristics of flexible mechanism, large work space, convenience in operation, and the like, and has an excellent application prospect.
Owner:GENERAL HOSPITAL OF PLA +1

Magnetorheological torsion damper and automotive seat with same

The invention discloses a magnetorheological torsion damper and an automotive seat with the same. The magnetorheological torsion damper comprises a cylinder body and a rotary shaft, wherein a containing cavity is arranged in the cylinder body, the rotary shaft stretches out of the containing cavity and is in running fit and sealing with the cylinder body, and the longitudinal section of the containing cavity is round. The magnetorheological torsion damper further comprises an internal cavity frame, an arc-shaped piston and an least one group of electromagnetic coils, wherein the internal cavity frame, the arc-shaped piston and the electromagnetic coils are all arranged in the containing cavity, the internal cavity frame is in the shape of an arc which is concentric with the inner wall of the cylinder body, one end of the internal cavity frame extends outwards in the radial direction to form a connecting part fixedly connected to the cylinder body, one end of the arc-shaped piston is connected with the rotary shaft and can rotate along with the rotary shaft, the other end of the arc-shaped piston is arranged between the internal cavity frame and the inner wall of the cylinder body in the mode that the end can rotate in the circumferential direction along with the rotary shaft, a sub-cavity I and a sub-cavity II are formed by the arc-shaped piston, the internal cavity frame and the cylinder body, radial gaps which can be communicated with the sub-cavity I and the sub-cavity II are arranged between the two sides, in the radial direction, of the arc-shaped piston and the internal cavity frame and between the two sides, in the radial direction, of the arc-shaped piston and the inner wall of the cylinder body in the circumferential direction, and the electromagnetic coils are wound on the arc-shaped piston in the radial direction. The magnetorheological torsion damper is compact in structure, large toque which can be used for restraining vibration can be output under the condition that the vibration torsion angle is limited, and the magnetorheological torsion damper is suitable for the occasions, such as the automotive seat, a suspension and a clutch, with small torsion angles.
Owner:SUZHOU BIAOTU SENIOR SEAT CO LTD

Consumable chip and its data resetting method, consumable container

The invention provides a consumable chip and its data resetting method, as well as a consumable container. The chip comprises an electronic module and a light-emitting diode. The electronic module is provided with a control unit and a memory, which includes a first storage area and a second storage area. Consumable margin data are stored in the first storage area, and consumable margin predetermined value data are stored in the second storage area. At least one pin of the light-emitting diode is in connection with the electronic module, wherein, the electronic module is also provided with a data resetting unit. The method comprises that: the data resetting unit receives the on-off signal of the light-emitting diode, and judges whether the frequency of the on-off signal is higher or lower than a set value, if so, the resetting unit sends a data resetting signal to the control unit, which, after receiving the data resetting signal, writes the consumable margin predetermined value data stored in the second storage area into the first storage area to cover the consumable margin data. The consumable chip of the invention can ensure that the consumable margin predetermined value data can be written into the first storage area timely and guarantee stable working of the consumable container.
Owner:ZHUHAI TIANWEI TECH DEV CO LTD
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