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146results about How to "Avoid permanent damage" patented technology

Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable

An electric cable includes a strain sensor longitudinally extending along the cable and including a strain optical fibre arranged within a bending neutral region surrounding and including a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core including an electrical conductor, wherein the strain sensor is embedded in a strain-transferring filler mechanically coupling at least one of the at least two longitudinal structural elements with the strain sensor. With the disclosed cable construction, the strain experienced by the at least one of the at least two longitudinal structural elements is transferred to the strain sensor at least in a strained condition. In the preferred embodiments, the electric cable is a heavy-duty cable.
Owner:PRYSMIAN SPA

Array substrate, display device and method for driving array substrate

The invention discloses an array substrate, a display device and a method for driving the array substrate, relates to the display field, can realize polarity inversion, and also can effectively reduce driving voltage of a pixel electrode and a public electrode so as to realize a purpose of reducing consumption of electric quality. The array substrate comprises a plurality pixel units, a plurality of grid lines, a plurality of data lines, a plurality of first public electrode lines and a plurality of second public electrode lines, wherein the plurality of grid lines are used for providing grid scanning signals for the pixel units; the plurality of data lines are used for providing data signals for the pixel units; each first public electrode line is connected with an odd-column of pixel units, each second public electrode line is connected with an even-column of pixel units, public voltages with inverse polarities are respectively provided for the odd-column of pixel units and the even-column of pixel units, and the polarity of driving voltage difference loaded to any one pixel unit by using the data lines and the first / second public electrode lines is opposite to the polarity of the public voltage loaded to the pixel unit.
Owner:BOE TECH GRP CO LTD

Brushless dc drive

In a brushless direct-current drive with a synchronous motor (10), which has a stator (12) that supports a multi-phase stator winding (15) and a rotor (13) equipped with permanent magnet poles (20), and with a switch unit (11), which precedes the stator winding (15), for commutating the stator winding (15), in order to produce a fail-silent behavior, a field excitation winding (21) is disposed in the rotor (13), which winding can be supplied with current in the event of a malfunction so that it generates a magnetic flux oriented in the opposite direction from the magnetic flux of the permanent magnet poles (20) (FIG. 2).
Owner:ROBERT BOSCH GMBH

Method for manufacturing three-dimensional nano grid structure based on one-dimensional soft template nanoimprinting

The invention belongs to the technical field of micro-nano manufacturing, and in particular relates to a method for manufacturing a large-area three-dimensional nano grid structure based on a one-dimensional soft template nanoimprinting technology. The method comprises the following steps of: performing first-time nanoimprinting by using a soft template; removing a imprinting glue residual layer by oxygen reactive ion etching (RIE); degumming by using a manufactured imprinting glue pattern as a masking film etching substrate material to obtain a one-dimensional nano grating structure; performing a second-time imprinting and etching process by using parameters the same as those of the previous imprinting and etching process; and adjusting the included angle formed between the direction of the template during the second-time imprinting and the direction of the template during the first-time imprinting to be between 0 and 90 degrees so as to obtain the three-dimensional nano grid structure with a 25nm nano-point. Due to the adoption of the soft template, permanent damages caused by contacting a hard template with a hard substrate can be effectively avoided, and the usage of a three-dimensional template is avoided simultaneously. The size and the shape of the manufactured nano structure are controllable. The method is low in cost and high in efficiency, controllability and resolution.
Owner:DALIAN UNIV OF TECH

Tunnel slag tapping, sand and gravel processing and concrete processing and conveying integrated equipment and process

PendingCN110130920ASolve the transportation problemReduce in quantityTunnelsMixing operation plantSlagMaterial resources
The invention discloses a tunnel slag tapping, sand and gravel processing and concrete processing and conveying integrated equipment and process. The tunnel slag tapping, sand and gravel processing and concrete processing and conveying integrated equipment comprises mobile crushing equipment, wherein a discharging port of the mobile crushing equipment is sequentially connected with a material pre-sorting system, an aggregate processing system and a concrete processing system through a telescopic conveying belt group, and a discharging port of the concrete processing system is connected with aconcrete belt conveying system; after materials in a tunnel blasting area B are preliminarily crushed by the moving crushing equipment, the materials are transported into the pre-sorting system and the aggregate processing system to prepare fine aggregates and fine sand with different gradations, finally transported into the concrete processing system to prepare concrete, and transported to a tunnel construction area through the concrete belt conveying system for concrete construction after penetrating through a lining trolley. The manpower and material resources are reasonably utilized and distributed, the automatic construction of a tunnel is achieved, high flexibility and good safety performance are achieved, and the construction efficiency and quality of the tunnel are greatly improved.
Owner:GUIZHOU CHENGZHI HEAVY IND SCI TECH

Self-healing waterproof electric aerial optical cable connector box

The invention discloses a self-healing waterproof electric aerial optical cable connector box which comprises a connector box body, a connector box body fixing rack and a self-healing repairing device, wherein the connector box body comprises a base plate, a cap cylinder and an inner core arranged inside the cap cylinder, the inner core is fixed on the base plate through an installation bottom plate, the cap cylinder is buckled on the base plate, and the cap cylinder is connected with the base plate through threads; the self-healing repairing device comprises a small power supply device, repairing gas cylinders and a humidity detection device, the small power supply device comprises a solar panel and a storage battery, the number of the repairing gas cylinders is two, an atomizing nozzle is arranged on the opening of each repairing gas cylinder, an electromagnetic switch valve is arranged on the opening side of each repairing gas cylinder, and the humidity detection device is arranged on the installation bottom plate. According to the self-healing waterproof electric aerial optical cable connector box, self-healing repairing of the optical cable connector box is achieved, sealing between the cap cylinder and the base plate is ensured, and permanent damage to optical fibers caused after water enters the optical cable connector box is avoided.
Owner:STATE GRID CORP OF CHINA +1

Test construction for transistor

The invention provides a test structure for transistors. The structure comprises an electric-charge storage element and a discharge element which are in parallel connection between a grid of a tested transistor and a substrate, wherein the area of the electric-charge storage element is larger than that of the transistor. The electric-charge storage element and the discharge element are taken as protective elements, can prevent instantaneous high current produced by electrostatic discharge from destroying a thin-grid oxide layer of a semiconductor transistor and even breaking down a grid of the semiconductor transistor so as to cause permanent damage.
Owner:SEMICON MFG INT (SHANGHAI) CORP

Vault deflection control method in catenary arch springing increased cross-section reinforcement construction

The invention discloses a vault deflection control method in catenary arch springing increased cross-section reinforcement construction. Basic parameter values of a structure are obtained according toa design drawing; a cable is adopted to approximately replace a catenary; the deflection of the section of a vault when a unit force acts upon any section of a catenary arch is calculated; the deflection of the vault at the moment is calculated by using a reinforcement section length, which is determined by a construction scheme, and the cubic amount of desired concrete; and the deflection of thevault which is actually measured on site is compared with the calculated deflection. The vault deflection control method in the catenary arch springing increased cross-section reinforcement construction is used for constant section catenary hingeless arches. Compared with the existing most common finite element method, the vault deflection control method in the catenary arch springing increased cross-section reinforcement construction has the advantages that real-time control can be performed on the construction site under the coordination of a scientific calculator; the operation is simple;the realization is easy; and defects that the calculation time is long, parameters cannot be directly obtained to affect rules and so on due to the adoption of the existing commonly used finite element method are overcome. And meanwhile, according to the vault deflection control method in the catenary arch springing increased cross-section reinforcement construction, an analytic expression directly reflects the mechanical relation between the vault deflection value and each parameter of the structure to be beneficial for engineers to master the reinforcement design and the construction scheme.
Owner:GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD

Method and device for performing online monitoring to fatigue damage of KTP crystals

ActiveCN104568988ARapid online monitoring of fatigue damagePrecise determination of fatigue damageMaterial analysis by optical meansFatigue damageComputer control system
The invention discloses a method and device for performing online monitoring to fatigue damage of KTP crystals. According to the method, the He-Ne laser transmission rate of a laser radiation area can be reduced by utilizing the fatigue damage generated under the mutual action of the KTP crystals and high-strength laser, so that the fatigue damage of KTP crystals can be monitored in an online manner by utilizing He-Ne laser; the device comprises a high-energy laser device, a lens, KTP crystals, a light absorbing pool, a spectroscope, a He-Ne laser device, a first energy meter, a second energy meter, a synchronous controller, a router and a computer control system. the transmission rate of He-Ne laser can be calculated in real time through the computer control system through utilizing the KTP crystals to absorb light, and the fatigue damage status of the KTP crystals can be judged, the on and off of the high-energy laser device can be accurately controlled, and the permanent damage of the KTP crystals can be avoided, the control precision is high, the operation is convenient and simple, and reliable guarantee is provided for accurately determining the fatigue damage of the KTP crystals.
Owner:HEFEI WISDOM DRAGON MACHINERY DESIGN CO LTD
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