101results about How to "Meet high precision requirements" patented technology

The present invention discloses an overall emotion recognition method and system combining an image and speech. The process of recognition comprises: after acquiring a corresponding speech and video signal from an input video, an information acquisition apparatus transmits the corresponding speech and video signal to corresponding emotion classification modules respectively, and after classification, an integrated learning trainer allocates weights, and after weighting, a recognition result is output to complete a recognition process. The system comprises an information acquisition apparatus, an emotion classifier and an integrated processor. The information acquisition apparatus comprises a video acquisition device and an audio acquisition device; the emotion classifier comprises an expression emotion classification module for performing emotion classification on acquired video information and a speech emotion classification module for performing emotion classification on acquired audio information; and the integrated processor comprises a weighting module and an integrated learning trainer. The method and system provided by the present invention have the advantages of higher emotion classification reliability, flexible adjustment on confidence parameters and high precision; and through bi-directional recognition of expression and speech, the human emotion recognition process is simulated to a large extent.

The invention discloses a contour symmetry constraint generative adversarial network-based multi-pose face recognition method. The method is characterized by comprising the following steps of 1) performing data preprocessing; 2) creating a contour constraint generative network; 3) creating a symmetry constraint adversarial network; 4) training and balancing the networks; and 5) performing reconstruction and recognition. According to the method, the pose angle deflection influence of a face image can be effectively eliminated; a characteristic that a face is robuster under multiple poses is extracted; especially global quality and local details are mutually constrained under large-angle pose reconstruction; contour characteristic information of the front face is kept; and the high-precisiondemand on the multi-pose face recognition in actual application can be met.

The invention provides a production technology of a high-precision deep groove ball bearing. The production technology includes the steps of (1) ferrule (inner ring and outer ring) machining, (2) rolling body machining, (3) cage machining and (4) assembling. The ferrule (inner ring and outer ring) machining procedure includes the steps of blanking, annealing treatment on blanks, turning, thermal treatment and grinding, wherein in the turning step, the blanks are basically machined and formed. The rolling body machining procedure includes the steps that forging forming is conducted on 9Cr18Mo stainless steel blanks; carburizing treatment is conducted; grinding is conducted; polishing and inspection are conducted. The cage machining procedure includes the steps of workpiece turning, drilling, lubrication hole machining, surface treatment, washing and rust prevention. The assembling procedure includes the steps that a heated bearing outer ring and a cage are placed on assembling equipment, and a rolling body is pressed into a pocket in the cage; a heated bearing inner ring is placed at the corresponding position of the assembly equipment, and the inner ring is pressed slightly to enable the rolling body to be pressed into a groove of the outer ring; the outer ring is taken down, and assembly of the whole bearing is completed. Through the production technology, the precision of the deep groove ball bearing is improved.

The present invention relates to a mnicar engine cylinder pressure casting aluminium alloy, and its chemical component composition includes (wt%) Cu 1.5-3.0%, Si 10.0-12.0%, Mg 0.15-0.35%, the rest is al and the other is impurity. Said alloy tensile strength Qb is greater than or equal to 300MP. Said alloy has enough strength and rigidity and good size stability. Said alloy can meet the requirements for minicar engine cylinder body high-pressure casting process and mechanical working process.

A high accuracy frame for an aircraft assembling tool comprises a benchmark base frame which is arranged at the bottom of the integral frame, a supporting frame and a top frame; the benchmark base frame is a rectangular frame which is formed by two long rods and two short rods; a plurality of vertical bearing rods are oppositely arranged on the two long rods; the supporting frame is provided with two supporting rods; the two supporting rods which are fixed at upper ends of the vertical bearing rods are parallel to the two long rods; the top frame is a rectangular frame; the length of two short rods of the rectangular frame is less than that of the two short rods of the benchmark base frame; the length of two long rods is identical to that of the two long rods of the benchmark base frame; a projection of the top frame is in the center of the benchmark base frame; the plurality of inclined bearing rods are arranged between the top frame and the supporting frame. The invention also provides a high accuracy frame machining method. According to the high accuracy frame for the aircraft assembling tool, the frame achieves a hard connection requirement, no filler is arranged between gaps, and stability and non-deformation is guaranteed.

The invention provides a loading device based on six-degree-of-freedom parallel mechanisms. The device is mounted on a base and comprises a front counter-force base, a six-degree-of-freedom parallel mechanism, a gravity balancing mechanism, a force measuring mechanism and a back counter-force base. The six-degree-of-freedom parallel mechanism comprises a lower hinge support connected with the front counter-force base, a hydraulic actuating mechanism connected with the lower hinge support and a moving platform connected with the hydraulic actuating mechanism; the gravity balancing mechanism comprises an air spring connected with the moving platform and a front end transition board connected with the air spring through a connecting support; the force measuring mechanism comprises a sensor on the moving platform; and the back counter-force base is in an adjustable connection with the base. The loading device has the advantages that parallel mechanism kinematic positive solution is used for measuring the output pose, investment for measurement equipment is simplified, measurement accuracy of the output pose is effectively improved; force measurement accuracy is effectively improved, and high-accuracy requirement for force measurement is met; and six-degree-of-freedom motion simulation and force loading test of parts can be performed.

The invention relates to a weighing system having high precision quantification process. The system includes a first feeding mechanism which controls feeding to an initially set weighing value, and a second feeding mechanism which controls feeding to an object set weighing value. The second feeding mechanism includes a spherical spool part which is arranged inside a second feeding channel and conducts radial self-rotation around the second feeding channel. The spherical spool part is provided with a recessed part for receiving a material on the spherical surface most distant from a self-rotating shaft. The weight of the material received in the recessed part is smaller than the error range of the set weighing value. According to the invention, the system realizes fine feeding by rotating the spherical spool part, and when the object set weighing value is arrived, the spherical spool part immediately stops the rotation, and the error of the set weighing value is smaller than the weight received by the recessed part, and the weighing value that is within the set error range is realized. The process weighing control system enables the precision of the weighing process to be easy to control and has a precision which reaches the requirement for high precision of national industries.

The invention provides a hydraulic control system of an extruder and a control method implemented by the hydraulic control system. The hydraulic control system comprises high-pressure air tanks, piston energy accumulators, an energy accumulator isolating valve, a proportional flow valve, an energy accumulator oil supply liquid inlet valve, a high-frequency-response proportional valve, a master cylinder liquid inlet valve, a side cylinder liquid inlet valve, a liquid replenishing variable pump and a plurality of parallel liquid inlet variable pumps; the high-pressure air tanks are communicated with air inlets of the piston energy accumulators via pipelines; oil outlets of the piston energy accumulators are communicated with a master cylinder of the extruder by pipelines via the energy accumulator oil supply liquid inlet valve, the proportional flow valve and the energy accumulator isolating valve sequentially; the liquid replenishing variable pump is communicated with the oil outlets of the piston energy accumulators via check valves by pipelines; one channel of a main oil outlet of the parallel liquid inlet variable pumps is communicated with a large cavity with the master cylinder of the extruder and side cylinders of the extruder via the high-frequency-response proportional valve, the master cylinder liquid inlet valve and the side cylinder liquid inlet valve respectively; and another channel of the main oil outlet of the parallel liquid inlet variable pumps is respectively communicated with the master cylinder of the extruder and the side cylinders of the extruder via another master cylinder liquid inlet valve and other side cylinder liquid inlet valves. The hydraulic control system has the advantages of large extrusion speed variation range, capability of meeting high precision requirements, and the like.

The invention discloses a ramp signal generating circuit and an image sensor, the ramp signal generating circuit comprises an operational amplifier, a first capacitor and at least one first switch capacitance unit, the first switch capacitance unit comprises a first switch, a second switch, a third switch, a fourth switch and a second capacitor; the first end of the first switch is connected to the negative phase input end and the output end of the operational amplifier, the first end of the second switch is connected to the positive phase input end of the operational amplifier and the first end of the first capacitor, the second end of the third switch is applied to input the first voltage, the second end of the fourth switch is applied to input the second voltage, which is unequal to the first voltage on voltage value; in the same first switch capacitance unit, the second end of the first switch is connected to the second end of the second switch and the first end of the second capacitor, the first end of the third switch is connected to the first end of the fourth switch and the second end of the second capacitor; the second end of the first capacitor is connected to the ground; the capacitance value of the first capacitor is greater than that of the second capacitor.

The invention provides a current amplification circuit, a fingerprint detection device and a control method of the current amplification circuit. The current amplification circuit comprises a voltage control unit, a current amplifier and current amplification units arranged in an array, each current amplification unit comprises a current mirror, each current mirror is separately and electrically connected with a voltage input end, the voltage control unit and a reverse-phase input end of the current amplifier, a positive-phase input end of the current amplifier and the voltage input end are electrically connected, and the voltage control unit outputs voltage control signals to the current mirrors respectively controlling the current mirrors to amplify currents input from the voltage input end. Primary amplification processing is performed on the currents flowing from the voltage input end by using the current mirrors, so a current amplification times needed when secondary amplification processing for the currents is performed by the current amplifier is effectively reduced; and, the current amplification circuit provided in the invention can effectively reduce a resistance value of a resistor for amplifying a current in a current amplifier on an integrated circuit chip on the basis that the current amplifier is usually integrated onto the integrated circuit chip.

The invention provides a welding device and method for assembling an optical fiber gyro. The deice comprises an optical fiber gyro welding assembly (1), chucks (2), a laser assembly (3) and a platform (4). When the device is adopted for welding an optical fiber gyro, an optical fiber gyro assembly (5) is assembled firstly, an assembled gyro upper cover (9) needs to be welded to the upper side and the lower side of a gyro base (10), and the optical fiber gyro welding assembly (1) is used for pressing the connected gyro upper cover (9) and the gyro base (10). An industrial camera (13) of the laser assembly (3) is used for obtaining weld joint position and images in real time, and a laser (12) is used for completing welding. By means of the welding device and method for assembling the optical fiber gyro, the work efficiency and welding accuracy for structure sealing are improved.

This invention discloses a kind of electronic sphygmomanometer and its displaying technique: a sensor senses gasbag pressure signal and educe pressure value after operation process, and outputs the value to a displaying unit to display it by means of a simulated quicksilver column scale. Wherein, the scale is divvied into sections according to designed program, and the scale mark is set by pressure comparison and judgment. In this way, pressure values can be displayed by a subsection manner instead of a full and consistent long column shape. So liquid crystalline display screen of the sphygmomanometer can be smaller and cheaper, at the same time, the resolution ratio of this invention is enough to meet high accuracy need of the scale mark.

The invention discloses a lathing device for an iron core of an efficient motor without an end plate at two ends and a machining method thereof. The lathing device comprises a lathe, two thimbles and a clamping fixture, wherein the thimbles clamp the iron core of the motor through the clamping fixture; correspondingly, the iron core of the motor is provided with a knife rest; the knife rest is provided with a lathe tool which includes a first cutting edge and a second cutting edge; the included angle between the two cutting edges is 100-115 degrees; and the machining steps are as follows: step A, machining by using the first cutting edge, and when the knife is moved from an A end face to have a distance of 1-2 cm to a B end face, retracting the knife to a B end; step B, machining by using the second cutting edge, and when the knife is moved from the B end to have a distance of 1-2 cm to the A end face, retracting the knife to an A end; and carrying out the Step A and the Step B alternately until a set qualified size is obtained. The machining process improves production efficiency, increases product quality, avoids machining risk, realizes requirements on aesthetic sense and high precision of products, saves production cost and increases production benefits as repeated manual subsequent arrangement is unnecessary and the lathe tool is not easy to damage.

The invention relates to an online robot rolloff device for side body wheel covers. The device comprises a base, three clamping mechanisms, two locating pin mechanisms, two sucking disks, an upper bottom die and a lower bottom die, wherein the clamping mechanisms are mounted on the base; the locating pin mechanisms are arranged at the corresponding location holes corresponding to the a body in white; the arc upper bottom die is mounted at the upper part of the base; the sucking disks are mounted adjacent to the arc upper bottom die; the arc lower bottom die is mounted at the lower part of the base; all mounting mechanisms are mounted through pins and screws in a cooperating manner; and meet meanwhile, the rolloff accuracy requirement is metat the same time. The device provided by the invention can realize the fixation of positional relation between tire membranes and wheel covers under the condition that no other external mechanism is required; through the cooperation with the robot and a rolloff head, the device can complete the rolloff work of rear wheel covers on the general assembly welding line of the body in white; the device adopts the car body as a locating basis, and directly fixes the wheel cover rolloff mechanism to the car body; as no extra fixture is required to locate the side body, the device occupies smaller space, is easy to arrange, more accurate in locating and shorter in debugging time.

The present invention provides a pressure testing oil cylinder mechanism of a powder shaping machine consisting of a driving screw matching with a ball seat in the sliding block, an oil cylinder fixed on the sliding block and the soleplate, an air cylinder body with a piston is fixed on the oil cylinder, an air cylinder piston matching with a guider actively and that is fixed on a connection board. Said oil cylinder is a cylinder for measuring that is fixed on the sliding block and the soleplate, and a measuring piston is provided in the inner chamber, and also the oil cylinder matches with the air cylinder piston and the air cylinder body. The pressure of the powder shaping machine can be measured accurately by the oil pressure sensor of the pressure controller positioned on the soleplate, even though moving direction of the measuring piston is converted from the upper to the lower comparing the original moving direction and all the air in the measuring oil cylinder is discharged in the moving state. As a result, the pressure of the pressed objects is controlled by a pressure controller for adjusting, controlling and inputting the pressure of the measuring oil cylinder.

The invention belongs to the technical field of orthopaedic surgical equipment, and discloses a pen-type hand-pressed fine bone drill for orthopaedic surgery, wherein the pen-type hand-pressed fine bone drill for orthopaedic surgery is provided with a shell. A transmission rod, a miniature gearbox, a motor and a storage battery are sequentially arranged from the front end to the rear end inside the shell; A drill bit is arranged in front of the shell; A transmission rod is arranged behind the drill bit, and the front end of the transmission rod is connected with the drill bit through a coupling; The transmission rod is connected with a micro transmission through a coupling; The micro-gearbox is connected with an electric motor through a coupling; A motor switch and a speed regulating button are arranged on the outside of the housing, and a fixing bracket is fixed on the front screw. The bone drill realizes the speed regulating function of the fine bone drill when in use. A switch of that motor is arranged at the position of the index finger, which is convenient to operate; meanwhile, the invention has the advantage of simple structure, strong structure and convenient operation.

A photographing module with multiple camera lenses focusing respectively comprises a shell, elastic pieces, at least two lens seats, a plurality of magnetic stones or magnets, a plurality of coils and a plurality of leads. Each lens seat is provided with a lens assembling hole, and each elastic piece is positioned between the inner side of the shell and the corresponding lens seat in an abutted manner. Four coils are fixedly arranged on the outer sides of the four horizontal directions of each lens seat respectively, the magnetic stones or the magnets are fixedly arranged in the shell, and one magnetic stone or magnet is arranged on the outer side of each coil correspondingly. When being electrified, the coils generate magnetism mutually repelling with that of the magnetic stones or magnets. The leads are electrically connected with the coils to enable the coils to be electrified and generate magnetism. The photographing module with the multiple camera lenses focusing respectively has the advantages that except for a traditional focusing function in a Z-axis direction, each lens seat has a fine adjustment function in two angles of theta x and theta y, so that high-precision requirements on focusing during photographing is met, production efficiency and yield are increased because of structural simplification, and cost is lowered.

The invention relates to a pre-assembled box culvert for high-speed road and bridge construction, which comprises a top formwork and a side wall board supporting the top formwork, the side wall boardcomprises a base and a support platform on the base, the base and the support platform is formed into an inverted T-shape, and the inner side of the base is provided with cast steel bars, the upper end of the support platform is provided with a V-shaped groove or a U-shaped groove, and the outer side of the support platform is provided with a lower hanging steel bar hook, and the lower hanging steel bar hook and the cast steel bars are arranged in parallel; the lower end of the top formwork is provided with an engaging portion conforming to the groove type of the V-shaped groove or the U-shaped grooved, and the upper plate surface of the top formwork is provided with an upper hanging steel bar hook, which is provided with a connection hole along the long direction of the top formwork platefor the connection and fixation of the bend bolts .

The invention relates to a C-axis device of a numerical control vertical lathe. The device is characterized in that: the C-axis device is arranged beside a first gear which drives a worktable to rotate and is fixedly connected with a spindle and mainly comprises a servo motor, a transmission mechanism, a slide rail, a slide seat and a linear driving mechanism. The C-axis device can finish turning, drilling and milling actions through one-time clamping, is multipurpose, comprehensively improves processing efficiency, and particularly has superior processing performance for thin-wall parts withhigh requirements.