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78results about How to "Overcoming distortion" patented technology

Detection method and detection device for detecting foreign matters in bottled liquid based on reflected light path design

ActiveCN104359916AGood rotation (autorotation) stateDetection facilitates realizationOptically investigating flaws/contaminationForeign matterPrism
The invention relates to a detection method for detecting foreign matters in bottled liquid based on a reflected light path design and a detection device adopting the method. According to the method, a mechanical hand is used for clamping a detection bottle containing liquid from the upper part of the detection bottle to perform bottom light detection and backlight detection; a bottom light source is used for illuminating the detection bottle from the downside of the detection bottle to the upside; a first camera is used for shooting a transmittance image of front surface bottom light reflected by a first prism; a second camera is used for shooting a transmittance image of back surface bottom light which is reflected by a side back reflecting mirror and then reflected by a second prism; a backlight source is used for illuminating the detection bottle from the back surface of the detection bottle; a third camera is used for shooting a transmittance image of backlight reflected by a third prism; the images are analyzed to determine whether foreign matters exist in the liquid in the bottle; and the detection device consists of the light sources, the prisms, the reflecting mirrors, the cameras and matching devices. The detection device disclosed by the invention is small in volume and high in detection efficiency, and can be mainly used for detecting foreign matters in various bottled liquids especially medical bottled liquids including infusion bottles and the like.
Owner:德州深华光电科技有限公司

Quick mud stirring device for planting loquats

The invention relates to a mud stirring device for planting loquats, in particular to a quick mud stirring device for planting loquats. Mud can be uniformly stirred by the quick mud stirring device for planting the loquats, and the quick mud stirring device is novel in structure and high in stirring speed. The quick mud stirring device for planting the loquats comprises a left frame, a bottom plate, a right frame, a first slide rail, a stirring frame, first sliders, a push rod, a second slide rail, second sliders, a second rack, a large belt pulley, a tooth-missing gear and the like. The left frame, the first slide rail and the right frame are sequentially arranged on the top of the bottom plate from the left to the right, the first sliders are slidably connected onto the first slide rail, and the stirring frame is arranged on the tops of the first sliders. The quick mud stirring device has the advantages that the mud can be uniformly stirred by the quick mud stirring device, and the quick mud stirring device is novel in structure and high in stirring speed; the mud can cover saplings of the loquats, the root systems of the saplings can be protected, transpiration of water can be reduced, and accordingly the survival rate of the loquats can be increased.
Owner:屏边县昌源果蔬产销专业合作社

Fixing rack for supporting oil pipeline

The invention provides a fixing rack for supporting an oil pipeline. The fixing rack comprises L-shaped supports, a base arranged between the two L-shaped supports and a supporting device fixed on the base. The supporting device comprises an arc-shaped shell and horizontal plates which are connected to the two ends of the arc-shaped shell respectively, and a cuboid groove is formed in one side of each horizontal plate. The supporting device further comprises a hoop which comprises two semicircular shell bodies connected through a hinge, the hoop is placed in the arc-shaped shell, and the hinge is fixed at the bottom of the arc-shaped shell. The semicircular shell bodies which are connected through the hinge are arranged in the cuboid grooves of the horizontal plates in a sliding mode respectively. The supporting device further comprises a plurality of springs which are arranged on the two sides inside the arc-shaped shell, one end of each spring is connected to the inner wall of the arc-shaped shell, and the other end of the corresponding spring is connected to the outer wall of the corresponding semicircular shell body. According to the fixing rack for supporting the oil pipeline, the springs are connected between the arc-shaped shell and the semicircular shell bodies, and the compressed springs give supporting force to the arc-shaped shell, so that the oil pipeline can be stably placed in the hoop.
Owner:嘉兴力度五金科技股份有限公司

Color image quality evaluation method based on color descriptor

The invention discloses a color image quality evaluation method based on a color descriptor, which mainly solves the problem that the prior art can only give the sorting result between images, and cannot give the quality fraction which is more easily accepted by human beings. The implementation scheme is as follows: the preference image pair is constructed by selecting two images, and the color harmony descriptor, color contrast descriptor and color richness of each image are extracted; The difference between the two image features in the image pair is used as the feature difference of the image pair, and the preference class label of the image pair is estimated. The training data set is established by using the feature difference of each image pair and the corresponding preference class label; Mapping feature difference vectors of all image pairs to their corresponding preference class labels; The perceptual quality score is calculated according to the preference scale and the perceptual quality score. The invention improves the accuracy of the color layout, the hue and the quality evaluation of the harmonious color of the image, the quality fraction conforms to the human habit, and can be used in the compression, storage and transmission process of the color image.
Owner:XIDIAN UNIV

High speed DAC current source switch driving circuit

InactiveCN102355246AAvoid glitch spikesLower cross pointElectronic switchingDriver circuitControl signal
The invention relates to a high speed DAC current source switch driving circuit. A power supply voltage of the driving circuit is lower than a power supply voltage. The power supply of the driving circuit is an amplitude limit power supply. The driving circuit comprises a signal synchronization unit which is used for guaranteeing synchronization of current switch control signals. The signal synchronization unit gates the switch control signals through a global clock (CLK) and performs synchronization latch through a latch unit so that the synchronization of all the current switch control signals can be guaranteed. The signal synchronization unit generates a group of complementary first control signals and a group of complementary second control signals. A reduction control voltage cross point unit outputs two channels of control voltages and is used to reduce cross points of the two channels of control voltages so that the two complementary current switches can not be turned off simultaneously. An output terminal can avoid to output burr and peak. Smooth transition of the output current can be realized. By using the circuit of the invention, the burr and the peak introduced by the current switch can be overcome; influence of the current source switch control signals on DAC performance can be avoided.
Owner:SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP

Switching system for electrical impedance tomography

The invention discloses a switching system for electrical impedance tomography (EIT). The switching system comprises a flexible flat cable pin-shaped socket, a D-SUB connector, four shape memory alloy (SMA) connectors, four groups of decoding circuits, four groups of electric control switch circuits and a shielding driving circuit, wherein the shielding driving circuit is connected with the D-SUB connector through a shielding signal connecting wire; the input ends of the four groups of electric control switch circuits are connected with the D-SUB connector through an internal connecting bus respectively; the input end of each group of decoding circuit is connected with the output end of a group of electric control switch circuit respectively; the output ends of the four groups of decoding circuits are connected to the same flexible flat cable pin-shaped socket; and each SMA connector is connected to a group of electric control switch circuit. The switching system is ingenious in concept; the switching system of the conventional EIT system forms a subsystem independent from a data acquisition system, so that an electrode distribution parameter is reduced; and due to the adoption of novel switches and a shielding driving technology, the whole EIT system has the advantages of high imaging accuracy, high imaging speed, long service life, wide working frequency range and the like.
Owner:SEALAND TECH CHENGDU

Fire-resistant cable for bus and silicon rubber mixture of cable extrusion silicon rubber layer

The invention discloses a fire-resistant cable for a bus, comprising a conductor and a fire-resistant layer which is a fire-resistant layer of extrusion silicon rubber mixture, and the thickness of the fire-resistant layer of the extrusion silicon rubber layer is less than or equal to 0.20mm. The invention also discloses a silicon rubber mixture for cables, which is prepared by mixing single-component room temperature vulcanized silicone rubber and silicone oil by volume ratio of 9:1. In the fire-resistant layer of extrusion silicon rubber layer of the invention, the thickness of the fire-resistant layer of traditional silicon rubber is significantly reduced; and the characteristic of low dielectric constant is satisfied. Meanwhile, the invention also overcomes the problem of the attenuation and distortion of transmission signals caused by over-large thickness of the fire-resistant layer and uneven extrusion surface of cables for traditional buses, reduces attenuation, crosstalk and structural return loss, and ensures that the working range of a bus system can not be diminished; and the fire-resistant cable can still keep compact integral structure size by taking account of both fire-resistant property and high-frequency transmission property.
Owner:SHANGHAI ELECTRIC CABLE RES INST +1

Method and apparatus for reactive optical correction of galvano motor scanning heads

This invention relates to a method of optical correction of field position distortions created by galvano motor scanning heads. In addition, the invention relates to the apparatus and method to achieve a calibration of said field positions to overcome said distortions generated by the delivery optics within a galvano motor scanning head using a pre-calibrated target that may be positioned into a registration or ‘lay’ system for ease of identifying and measuring said series of marks by removal and replacing said pre-calibrated target into said registration or ‘lay’ system, pre-determined logic means to generate a series of marks on said pre-calibrated target using said galvano motor scanning head and said galvano motor scanning head control apparatus and operator input so that said logic means may calculate from a minimum number of operator entries corresponding to said series of marks on said pre-calibrated target that may be positioned into said registration or ‘lay’ system for ease of identifying and measuring said series of marks by removal and replacing said pre-calibrated target into said registration or ‘lay’ system a full field correction of the field position distortions taking into account all beam or laser beam, mounting, alignment and parallelity intolerances to generate corrected galvano motor position control optical correction data reactive to the exact parameters of an individual laser, delivery optic/s, galvano motor scanning head and target plane set-up.
Owner:ABARISCAN

Hedge trimming device assembly

The invention discloses a hedge trimming device assembly, and relates to the technical field of hedge trimmer tools. The hedge trimming device assembly comprises a transverse movement mechanism, a steering mechanism and a trimming mechanism; the transverse movement mechanism comprises a transverse movement guide rail and a transverse movement sliding base, a driving chain is fixedly connected to the transverse movement guide rail, and a driving wheel rolling along the surface of the driving chain is installed on the transverse movement sliding base in a reciprocating sliding manner. The hedgetrimming device assembly solves the problems that in a traditional technology, a steering assembly in a trimming device is under the visual field limitation of hedges during steering, and the phenomenon of tooth cracking of a steering wheel is caused; in the movement process of a transverse movement assembly, when the transverse spacings between the hedges and a road surface are different, the operation requirements for drivers are high; a trimming assembly cannot achieve combined trimming since multiple cutters are in single contact with the hedges for cutting, so that the throwing directionof branches is not fixed, and partial power is wasted; the branches are thrown on the high-speed road surface under the rotary cutting function of the cutters, and vehicles driven at high speed are influenced.
Owner:广州交投绿化建设有限公司 +2
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