47results about How to "Avoid affecting accuracy" patented technology

The embodiment of the invention discloses an outdoor face recognition system, belonging to the technical field of biological recognition. The outdoor face recognition system comprises a camera, a light supplying lamp panel and a face recognition module; the camera has a short-focus lens, and is used for acquiring an image in a predetermined area; a light supplying lamp is used for supplying light in the predetermined area; the light emission intensity of the light supplying lamp is greater than a predetermined threshold value; and the face recognition module is used for performing face recognition of the image. In the embodiment of the invention, on one hand, the signal-to-noise rate of the image is increased by increasing the light emission intensity of the light supplying lamp; on the other hand, a user can be guided to enable a face to be close to the light supplying lamp through the camera having the short-focus lens; therefore, the influence degree of the light supplying lamp on the face is increased, so that the signal-to-noise rate of the image is increased; even face recognition is carried out under outdoor strong light, influence of the light supplying lamp on the face is far higher than influence of sunlight on the face; therefore, the signal-to-noise rate of the image acquired by the camera is increased; and thus, the face recognition accuracy rate is increased.

The invention discloses an aerospace vehicle combined navigation robust filtering method based on a launching inertia coordinate system, belonging to the technical field of air vehicle combined navigation. The aerospace vehicle combined navigation robust filtering method comprises the following steps of performing inertial navigation algorithm arrangement by taking the launching inertia coordinate system as a reference coordinate system, and constructing a position, speed and posture calculation model of an air vehicle under the launching inertia coordinate system; on the basis of the position, speed and posture calculation model, constructing an equation of navigation system error states including a basic navigation parameter error and an inertia instrument error, and obtaining a posture linear measurement equation through a conversion module according to original star sensor measurement information; and finally estimating and correcting all state values in the constructed state equation by the robust filtering method. According to the aerospace vehicle combined navigation robust filtering method disclosed by the invention, the influence, caused by a geophysical field, on the navigation system of the air vehicle can be effectively reduced; furthermore, under a condition that the navigation system model of the air vehicle is inaccurate, a filter can work stably; therefore, the precision of a combined navigation system is improved.

The invention discloses an integrated nephrology urinary sediment microscopy device which mainly comprises a base body, a high-speed centrifugal device, a liquid taking telescopic device and a microscopy device body. The high-speed centrifugal device is embedded into the base body, the liquid taking telescopic device is connected on the upper portion of the base body through a vertical column and a horizontal supporting plate, the microscopy device body is connected on the upper portion of the horizontal supporting plate through a vertical supporting plate, a first liquid guide protection sleeve and a second liquid guide protection sleeve are longitudinally, bilaterally and parallelly arranged in the inner middle of the liquid taking telescopic device and sleeve a liquid supernatant guide pipe and a urinary sediment guide pipe in a penetrated manner, one end of the liquid supernatant guide pipe is connected with a waste liquid bottle, and the upper end of the urinary sediment guide pipe is communicated with a double-layer slide in the microscopy device body. The device is reasonable in design and convenient to operate, and working efficiency can be greatly improved.

The invention provides a pumping unit fault diagnosis method based on an improved unscented Kalman filter and an RBF neural network. Firstly, modeling is performed on decision parameters by using theRBF neural network; then, the weights, center and width of the hidden layer of a neural network model are updated by using an mproved unscented Kalman filter algorithm in real time to obtain optimal parameters of the neural network; and the pumping unit fault diagnosis method based on the combination of the improved unscented Kalman filter and the RBF neural network is established. The remarkableeffect of the invention lies in that: the accuracy rate of fault diagnosis is improved, and the purpose of real-time detection of the operation condition of a pumping unit is truly achieved.

The invention discloses a high-precision special-shaped profile laser measuring instrument which comprises a bottom plate and a moving device. A front side and a rear side of an upper surface of the bottom plate are fixedly connected with a lower end of a U-shaped mounting seat. Two mounting plates are arranged in the middle of a lower surface of the bottom plate. The moving device comprises a motor, a gear, a fixed plate, a sliding table, two sliding rods and a U-shaped rack. The rack is arranged on a side surface of a mounting base, lower ends of the two sliding rods are fixedly connected with the front and rear sides of the upper surface of the bottom plate, and ends of the two sliding rods penetrate through two sliding holes in a side face of the sliding table correspondingly. An uppersurface of the sliding table is fixedly connected with the middle of a lower surface of the fixed plate, and a motor is arranged in the middle of an upper surface of the fixed plate. According to thehigh-precision special-shaped profile laser measuring instrument, a laser measuring head can rotate around a profile by 180 degrees for measurement, and laser emitted by the laser measuring head irradiates various hollow places on a surface of the profile.

The invention relates to a method for automatically identifying price tags. The method comprises the following steps: S1, acquiring a picture containing the price tags; S2, detecting and interceptinga price tag image in the picture; s3, detecting and intercepting a character image in the price tag image, and performing posture correction and size alignment on the character image; and S4, extracting character structure features in the character image to perform character recognition so as to obtain commodity information, thereby realizing automatic detection of commodity names, prices and price fluctuations. The invention also provides a computer readable medium. The invention further provides a system.

The invention provides an automatic double-releasing device for a pulsator washing machine. The automatic double-releasing device comprises a computer board and a water inlet box and further comprises two storage boxes, wherein the two storage boxes are arranged on the left side and the right side of the water inlet box respectively; a water pump is arranged at the bottom of each storage box, an inlet of each water pump is connected with an outlet of the corresponding storage box, a water outlet of each water pump is connected with an inlet of the water inlet box through a one-way valve, and a signal input end of each water pump is connected with a signal output end of the computer board. The automatic double-releasing device is compact in structure, good in overall strength after assembly and convenient and reliable to mount; with the adoption of the integrated storage boxes, the leakage risk of split type storage boxes adopting hose connection is avoided; by means of two sets of independent automatic releasing apparatuses, liquid detergent can be automatically released in the washing process, liquid softener can be automatically released in the rinsing process, and the automatic double-releasing device is more convenient to use.

The invention discloses marble building material cutting and grinding integrated equipment with a dustproof function, and relates to the field of marble building material machining equipment. The marble building material cutting and grinding integrated equipment comprises a machining table, wherein a cutting and grinding part, a dust collection part and a conveying assembly are installed on the machining table, and the conveying assembly comprises a sliding groove formed in the top of the machining table; and a sliding block is installed in the sliding groove in a sliding manner. According to the marble building material cutting and grinding device, when a servo motor is started, a placing plate can be driven to move, so that marble building materials are sequentially subjected to cutting treatment through a cutting machine and grinding treatment through a grinding machine, cutting and grinding of the marble building materials can be completed at a time, workers do not need to carry the marble building materials any more, time and labor are saved, and the machining efficiency is improved; and when a suction fan is started, dust generated by cutting and grinding can be sucked into a dust suction pipe, so that it is guaranteed that air in the field working environment is clean, and the situation that because the workers suck the dust for a long time, the health of workers is affected can be effectively avoided.

The invention relates to the field of steel plate cutting, in particular to a steel plate laser cutting machine. The steel plate laser cutting machine comprises a workbench, a feeding mechanism, a pushing mechanism, a feeding assembly, a stabilizing assembly, a cutting assembly and a collecting assembly. The feeding assembly comprises two conveying mechanisms. The stabilizing assembly comprises two stabilizing mechanisms. The cutting assembly comprises a laser cutting mechanism and a first translation mechanism. The collecting assembly comprises a collecting and cleaning mechanism and a second translation mechanism. Through tight combination of the feeding mechanism, the pushing mechanism and the feeding assembly, steel plate cutting is completed through automatic operation, the labor input is reduced, and the enterprise benefits are increased. A signal transmitting machine of the laser cutting structure and a signal sensor of the collecting and cleaning mechanism enable the laser cutting mechanism and the collecting and cleaning mechanism to operate synchronously through signal transmitting and receiving, cut waste is transferred into the collecting and cleaning mechanism, the circumstance that the waste is discarded at will is eradicated, and the environmental protection benefits are increased.

The invention discloses a device for welding and fixing hydraulic-engineering pipes. The device is directly arranged on the hydraulic-engineering pipes in a sleeving manner, and an oil cylinder is provided for compression and pressure maintaining, so that the welded two pipes are fixed. The device is characterized in that two main U-shaped brackets are parallel with each other; the two ends of thetwo main U-shaped brackets are connected with two fixing base plates through fixing blocks correspondingly; the two fixing base plates are parallel with each other; sliding grooves are formed in thefixing base plates; two subsidiary U-shaped brackets are parallel with each other; the two ends of the subsidiary U-shaped brackets are each provided with a sliding block, and the sliding blocks are arranged in the sliding grooves correspondingly; the subsidiary U-shaped brackets are parallel with the main U-shaped brackets; the inner sides of the main U-shaped brackets and the inner sides of thesubsidiary U-shaped brackets are each provided with two grooves in a symmetrical manner; two threaded holes are symmetrically formed in each main U-shaped bracket and communicate with the grooves in the corresponding main U-shaped bracket correspondingly; and two threaded holes are symmetrically formed in each subsidiary U-shaped bracket and communicate with the two grooves in the corresponding subsidiary U-shaped bracket correspondingly.

The invention provides a multihole machining tool of an end face of an air cylinder sleeve. The machining tool comprises a drill plate (1), wherein the drill plate (1) is an circular column; one or more die holes (2) are uniformly formed in the drill plate (1) along the same circumference; drill bushings (3) are connected into the die holes (2) in a sleeving manner; the machining tool further comprises locating blocks (4); the locating blocks (4) are fixedly connected with the drill plate (1); the shapes of the locating blocks (4) are matched with those of circular arc notches (5) of the air cylinder sleeve; the drill bushings (3) are internally provided with cylindrical through holes; external walls of the drill bushings (3) are conical; hole walls of the die holes (2) are conical; and the drill bushings (3) are matched and connected with the die holes (2). The machining tool is convenient and accurate in location, simple to operate, low in machining cost, good in drilling machining effect and high in machining efficiency and is particularly applicable to multihole machining of the end face of the air cylinder sleeve of a locomotive.

The invention relates to the technical field of sensors, and discloses sensor tin soldering equipment capable of automatically and accurately positioning an optical filter. The sensor tin soldering equipment comprises a main body and a metal frame, a tin soldering pipe is movably connected to the right end of the metal frame, and a supporting rod is movably installed at the center of a pulling piece. According to the sensor tin soldering equipment capable of automatically and accurately positioning the optical filter, center rods can be pushed to synchronously move when a fastening seat moves towards the middle, the center rods gradually move towards the middle along matched notches in acting rods, the acting rods extrude buffer springs to generate certain deformation, the front side and the rear side are limited and blocked to a certain extent, and the situation that the equipment waggles to influence the accuracy is prevented; and through cooperative use of mounting frames, sliding blocks, bases, rubber blocks and stabilizing pieces, insertion strips interact with teeth on receiving seats, so that the equipment has an automatic positioning function, the optimal position is found, and the use number of sensors is reduced.

The invention discloses a pressure switch detection device and method. The detection device comprises a frame and a pressure detection mechanism, wherein the frame is provided with a sealed accommodation chamber used for accommodating a to-be-detected pressure switch, the pressure detection mechanism comprises a first solenoid valve and a second solenoid valve, the sealed accommodation chamber is provided with an input port used for inputting air pressure, the first solenoid valve is connected with the input port through a first conduit, the second solenoid valve is connected with the input port through a second conduit, the firs conduit is provided with a first switch used for controlling on and off of the first conduit, the second conduit is provided with a second switch used for controlling on and off of the second conduit, the sealed accommodation chamber is further connected with a pressure release valve, the frame is internally provided with an air source case, the first solenoid valve and the second solenoid valve are connected with the air source case through connection pipes, and the pressure switch is detected through setting a pressure interval. The detection device is advantaged in that the structure is simple, detection efficiency is higher, and detection accuracy is further guaranteed.

The invention relates to a curved glass screen size measuring method. The method comprises the following steps: 1) attaching one end of a to-be-measured product to an interception block; 2) descendinga length measurement lifting block which has a specific distance with the interception block, judging whether a length is qualified or not through whether a length measurement contact induction screen in an inner side of the length measurement lifting block generates an induction signal, and judging whether a thickness is qualified or not according to an induction signal generation area; 3) for aqualified product detected in the step (2), descending an outer arc measurement lifting block and sleeving an outer arc of the product, and determining whether the outer arc is completely qualified through the area, where an outer arc measurement contact induction screen, consistent with a theoretical shape of the outer arc of the product, of the inner side of the outer arc measurement lifting block generates the induction signal; and 4) placing the qualified product detected in the step (3) on an inner arc measuring arc block, and judging whether the inner arc of the product is completely qualified or not through the area, where an inner arc measuring contact induction screen arranged on the outer side of the inner arc measuring arc block generates the induction signal.

The invention discloses a high-strength solid silica gel processing device and a preparation method thereof.The high-strength solid silica gel processing device comprises a processing box, supporting legs are fixedly connected to the bottom of the processing box, a set of supporting columns are fixedly connected to the bottom of the inner side of the processing box, a mounting base is fixedly connected to the tops of the supporting columns, and a solid silica gel body is placed on the tops of two bearing plates; then, a handle rod is rotated to be matched with a circular plate to drive an adjusting screw rod to rotate on the inner side of a threaded sleeve, a clamping plate is moved through a connecting assembly to clamp and fix the solid silica gel body, and an electric telescopic rod is controlled to stretch out and draw back, so that a fixing plate drives a positioning assembly to descend; a pressing plate in the positioning assembly is connected with the solid silica gel body in an attached mode, so that the solid silica gel body is more stably fixed, an electric telescopic rod is controlled to drive a mounting plate to continue to descend, a cutting blade conducts cutting operation on the solid silica gel body, manual cutting is not needed, the cutting efficiency is higher, and safety is better.

The invention relates to the technical field of potassium feldspar machining, and discloses a potassium feldspar tailing purifying device and a purifying process based on the potassium feldspar tailing purifying device. The potassium feldspar tailing purifying device comprises a sorting machine body, and a distributor is arranged in the sorting machine body. A feeding device is arranged on the upper portion of the distributor. The feeding device comprises a feeding tank and a feeding pipe, and a plurality of guide plates are arranged in the feeding pipe. A plurality of gears capable of rotating are arranged at the ends of the guide plates side by side. A feeding plate corresponding to the distributor is arranged on the inner wall of the sorting machine body, a clearance is arranged betweenthe lowest guide plate and the upper surface of the distributor, and the height of the clearance ranges from 10 mm to 20 mm. According to the potassium feldspar tailing purifying device, raw materials can be divided and arranged on the distributor side by side, and therefore the problem that the raw materials are uneven in distribution and are even stacked together is avoided, and the detection accuracy can be improved. When the lower portions of the gears are clamped, the raw materials are in contact with the upper portions or sides of the gears, the gears can be driven to rotate, and therefore the raw materials clamped on the lower portions of the gears are moved, and the problem of material clamping is solved. According to the potassium feldspar tailing purifying device and the purifying process based on the potassium feldspar tailing purifying device, the detection efficiency is improved, and the detection accuracy is improved.

An automatic cell inoculation instrument comprises a base; a support is welded to the top of the base; the centre of the top of the base is connected with one end of a weighing device; the other end of the weighing device is connected with one end of a spring; the other end of the spring is connected with one end of a placing plate; a sliding way is arranged at the top of the placing plate; the sliding way is in sliding connection with one end of an electric sliding block; the other end of the electric sliding block is fixedly connected with one end of a culture dish; an air pump is arranged on one side of the top of the support; one end of the air pump is connected with one end of an air path; a first electric telescopic rod is arranged on one side of the bottom of the support and connected with one end of the air pump; and a second electric telescopic rod is arranged on the other side of the bottom of the support and connected with the other end of the air pump. According to the automatic cell inoculation instrument in the invention, the problems that existing equipment is not provided with a weighing device or a damping device, and operation is complex are solved.