1566 results about "Contact line" patented technology

A microfluidic device having durable ultraphobic fluid contact surfaces in the fluid flow channels of the device. The ultraphobic surface generally includes a substrate portion with a multiplicity of projecting regularly shaped microscale or nanoscale asperities disposed in a regular array so that the surface has a predetermined contact line density equal to or greater than a critical contact line density, and so that the ratio of the cross-sectional dimension of the asperities to the spacing dimension of the asperities is less than or equal to 0.1.

Method and apparatus for depositing multiple lines on an object, specifically contact and busbar metallization lines on a solar cell. The contact lines are preferably less than 100 microns wide, and all contact lines are preferably deposited in a single pass of the deposition head. There can be multiple rows of nozzles on the deposition head. Multiple materials can be deposited, on top of one another, forming layered structures on the object. Each layer can be less than five microns thick. Alignment of such layers is preferably accomplished without having to deposit oversized alignment features. Multiple atomizers can be used to deposit the multiple materials. The busbar apparatus preferably has multiple nozzles, each of which is sufficiently wide to deposit a busbar in a single pass.

The present invention discloses a bump for a semiconductor package, a semiconductor package applying the bump, and a method for fabricating the semiconductor package. As a second bump unit contacting an electrode terminal of a PCB has a smaller width than a first bump unit contacting an electrode pad of a semiconductor chip through a metal adhering layer, even if a pitch between the electrode pads of the semiconductor chip does not correspond to the pitch between the electrode terminals of the PCB, contact reliability is improved by the bump. In addition, the bump does not contact lines adjacent to the electrode terminal of the PCB, thereby preventing a mis-operation of the semiconductor package. Accordingly, the pitch between the electrode pads of the semiconductor chip and the pitch between the bumps can be minimized.

The invention discloses a non-contact contact line geometrical parameter detecting method. The method includes a first step of collecting high-definition images at equal time intervals by means of collection of control signals and finishing image preprocessing by means of the median filtering technique, the image graying technique and the like, a second step of locating a laser spot center point and extracting a coordinate of the center point by means of the iterative thresholding algorithm and a method of removing isolated noise in mathematical morphology, a third step of extracting a matched target region and detecting a transverse gray singular value of the target region, a fourth step of giving the wire height and a stagger value of a contact line by means of conversion from an image coordinate system to a camera coordinate system and from the camera coordinate system to a detection vehicle coordinate system, and compensating vibration of a vehicle body, and a fifth step of giving precise detection values of the wire height and the stagger value and displaying information of a plurality of parameters in a developed graphic monitoring interface. The method effectively improves detection efficiency of geometrical parameters of a contact net, simplifies the algorithm, improves precision of fault detection, and specifically improves safe reliability of the contact net of a high-speed train.

An electrical connector is provided that includes a housing having a mating interface. Contacts provided in the housing are organized in differential pairs with the contacts in each of the differential pairs being located along an associated differential pair contact line. The differential pairs are aligned wherein the differential pair contact lines of adjacent differential pairs are non-parallel to one another.

The invention discloses a safety monitoring analysis system for contact net running state. The safety monitoring analysis system for contact net running state comprises a first camera, a second camera, an image rectification unit, a pantograph recognition unit, a contact line recognition unit, a model database, a geometrical parameter calculation unit and a defect recognition unit, wherein the defect recognition unit comprises a pantograph deformation defect recognition unit, a component fall-off defect recognition unit, a pantograph pull-out overrun defect recognition unit, an arcing defect recognition unit, a high temperature interference recognition unit and an accident pantograph falling-down defect recognition unit. The safety monitoring analysis system for contact net running state can detect and recognize defects, comprising contact net defect, pantograph defect and pantograph-net relationship defect, existing in the contact net in real time according to pantograph recognized by the pantograph recognition unit, a contact line recognized by the contact line recognition unit and/or geometrical parameters output by the geometrical parameter calculation unit. The safety monitoring analysis system for contact net running state can carry out online monitoring on the pantograph-net relationship without interfering transportation order of operating vehicles and timely find out abnormal defects existing in the pantograph and contact net.

A method for forming contacts in a semiconductor device includes forming a plurality of substantially parallel semiconductor fins on a dielectric layer of a substrate having a gate structure formed transversely to a longitudinal axis of the fins. The fins are merged by epitaxially growing a crystalline material between the fins. A field dielectric layer is deposited over the fins and the crystalline material. Trenches that run transversely to the longitudinal axis of the fins are formed to expose the fins in the trenches. An interface layer is formed over portions of the fins exposed in the trenches. Contact lines are formed in the trenches that contact a top surface of the interface layer on the fins and at least a portion of side surfaces of the interface layer on the fins.

The invention relates to an ice melting method for overhead contact system of an electrified railway and an ice melting system thereof. Major hazards of ice coating of the overhead contact system include accidents that pantograph of electric locomotives can not contact with a contact line to obtain current, contact system brandishes, even falls of piles and collapses, and the like. In the ice melting method and the ice melting system thereof, an upper overhead contact system and a lower overhead contact system are connected in series to form a circuit by a section post, AC or DC ice melting current is input at the head end of the circuit, ice coating thickness and safe ice melting current value are obtained by analyzing meteorological and overhead contact system parameters with an ice coating data processing and control module, and then the ice melting system is controlled to output the ice melting current at the end of the circuit, thus ice is molten by Joule heat generated by the current. In the ice melting method and the ice melting system thereof, ice attached to the contact line is molten by joule heat, and compared with the deicing modes of artificial knock and the like of operation departments, the ice melting method and the ice melting system thereof greatly improve deicing efficiency, thus reducing the effect on railway transport, and eliminating damages of external force on the contact line.

The invention discloses a novel method and a novel device for phase separation control of ground surface over-current. The method comprises the followings steps of: determining A and B phase voltage phases of a contact line according to locomotive position sensors CG1, CG2, CG3 and CG4 arranged on a rail and contact line voltage phase detection modules M1 and M2 used for detecting the voltage phases of the contact line; and using a controller to control the connection and the disconnection of switching devices K1 and K2 consisting of full-control type power electronic devices so as to realize ground surface bumpless transfer over-current phase separation of an electric locomotive. The method and the device realize the bumpless transfer of the electric locomotive (a motor train unit) during the ground surface over-current phase separation so as to avoid the generation of a cut-off current over-voltage and a switch-on surge over-current, and reduce requirements on the switching devices. The method and the device have a high switching speed and can short the power-cut time for a train to pass through a phase separation area.

A leaf seal for sealing a shaft rotating about an axis, in particular in a gas turbine, includes a multiplicity of spaced-apart leaves (26) which are arranged in a concentric circle around the axis and are fixed in their position by welded connections produced by electron beam welding, the leaves (26), with their surfaces, being oriented essentially parallel to the axis. The welded connections of the leaves are improved by the leaves (26) being designed in such a way and being arranged in the leaf seal in such a way that they abut against one another at the side edges directly or via intermediate spacers (27) along at least one contact line (36) extending over a plurality of leaves (26), and by the welded connections being designed as welds directed along the at least one contact line (36) and oriented in axial direction.

A solar battery cell of a serial stacked structure, increasing scattering of light, exhibiting good power-generating efficiency per unit area, and ensuring high reliability and a large yield in the manufacturing process, is provided. The solar battery cell includes a plurality of power-generating regions connected in series, each having insulative transparent semiconductor, front electrode, intermediate transparent conductive film, photoelectric conversion layer formed of stacked semiconductor films, and back electrode, and a contact line electrically connecting the front electrode and the back electrode of the neighboring respective power-generating regions. One power-generating region has at least two photoelectric conversion layers with the intermediate transparent conductive films sandwiched therebetween. At least one member of nonconductor and/or semiconductor is provided between the intermediate transparent conductive film and the contact line to prevent direct contact thereof.

This invention relates to a tool intended for chip removing machining together with a cutting insert therefor. The cutting insert is formed having a connecting surface or serrations that comrises ridges (11) and intermediate grooves. The flanks (18) which delimit the ridge (11) have a convexly curved surface (28), the contact point of which to a co-operating flank (25) of a co-operating ridge consists of a line (G), which extends axially along the length extension of the flank and is situated in an area approximately halfway between on teh one hand an outer transition (19) between the flank (18) and an apex (17) and on the other hand an inner transition (23) between the flank and a groove bottom. The convexley curved surface extends inwards as well as outwards from said contact line (G), in order to guarantee that practical contact between the flanks of the co-operating ridges is attained via surface contact at an indifferent place between the outer and inner limiting edges (29, 30) of the curved surface.

A connection between a shaft and a coupling that preferably involves involute shaped splines is designed to reduce stress from torque applied to the shaft by a drive motor. To avoid stress concentration at the mouth of the coupling on startup, the shaft splines are made to taper from the shaft end down to the spline end. As a result, the initial contact with the coupling splines occurs within the coupling and removed from it mouth. The shaft is allowed to elastically twist in response to the applied torque as the contact area increases with shaft twisting and the contact line moves toward the mouth of the coupling. Stress concentration that formerly occurred at the coupling mouth is alleviated as some shaft elastic twist occurs without adding stress to the shaft splines until coupling contact is made.

The invention relates to a contact network key position dynamic offset detection method and a device thereof. A detection identification is arranged on objects at the key position of the contact network to be detected such as contact line of the section, carrier cable, dropper and upright of the detected contact network, an online CCD detection device is arranged on the upright of the contact network, a CCD camera acquires video image of the contact network, the detected displacement and quantity of motion are stored and amplitude, angle of twist and corresponding time course curve are drawn, and the online CCD detection device transmits the data to an upper machine room data center by virtue of a wireless communication module. The method and device of the invention are non contact and self-calibration, practicability is strong, and synchronous monitoring is carried out, so as to obtain data and image; amplitude, frequency, angle of twist and corresponding time course curve are recorded in real time and are used for analyzing influence of the stability of the contact network in high wind environment or under the action of other factors, and travelling is guided according to the real-time deviation state of the contact network.

The invention provides a contact network geometrical parameter detection method and device. The contact network geometrical parameter detection method comprises the steps of obtaining one-dimensional contact network images shot by at least two line-scan cameras fixed on the top of a vehicle, carrying out grey processing on the one-dimensional contact network images to generate a grey value and pixel coordinate relation diagram, determining the imaging position of contact lines of a contact network in the images according to the grey value and pixel coordinate relation diagram, determining the imaging angle of each contact line in the corresponding camera according to the imaging position of the contact line, and determining the geometrical parameters of the contact network according to the imaging angles and the position data of the line-scan cameras relative to the top of the vehicle. Geometrical parameter detection is carried out by utilization of the images collected by the line-scan cameras, the line-scan speed is high, a detection result is accurate, detection efficiency is high, the time for maintaining a skylight is not occupied, a reliable technical means is provided for measurement and evaluation of dynamic and static geometrical parameters of the contact network, and the working efficiency for checking and maintaining a power supply unit is improved.