148results about How to "Increase the safety distance" patented technology

The invention discloses an intelligent auxiliary parking method, which comprises the following steps of: planning parking paths in two parts, wherein in-space regulation paths are planned, and then storage paths are planned; and providing a human-computer interaction interface, receiving the intention of a driver, and displaying parking information. An intelligent auxiliary parking system for implementing the method comprises an environment sensing unit, a path planning unit, a driving control unit and a human-computer interface unit, which are in communication contact with one another. A vehicle can be guided into a parking space from any starting position, so that the number of times of pivot steering and changes in forward and backward movement of the vehicle in a parking process can be reduced; and under a parallel parking condition, a proper parking space can be selected according to the maximum permissible number of in-space regulation set by the driver, so that the requirements of the vehicle on the length of a parallel parking space are lowered.

The invention relates to a method for testing the electricity of an ultrahigh-voltage transmission line based on electric field measurement, which comprises the following steps: 1, establishing a measurement point; 2, measuring an electric field; 3, establishing a transmission line power frequency inverse problem equivalent model; and 4, computing the voltage of the transmission line according to the electric field at the measurement point to obtain the actual voltage of each phase of transmission line, if the voltage of the transmission line is below 30 V, determining the transmission line is electrically neutral, otherwise, determining the transmission line is electrified. The invention also relates to a system for implementing the method for testing the electricity of the ultrahigh-voltage transmission line based on the electric field measurement, which consists of an electricity testing terminal and a data processing centre. The method and the system realize the non-contact electricity testing of the ultrahigh-voltage transmission line and ensure the safety of workers. Because the voltage level of the ultrahigh-voltage transmission line is high and a safe distance is long, the safe, effective and new method for testing the electricity of the ultrahigh-voltage transmission line is provided.

The invention discloses a surface charge measuring system with an external motion control mechanism and a measuring method. The surface charge measuring system and the measuring method aim to solve the problem that under a high-voltage SF6 environment, the surface charge of a component such as an insulator in a complex shape is difficult to measure. The surface charge measuring system mainly comprises a main shell, a side shell, an upper parallel-plate electrode, a lower parallel-plate electrode, an electrostatic measuring probe and a high-speed high-voltage electrostatic potential meter. According to a surface charge measuring device provided in the surface charge measuring system and the measurement method, the operation that one of the electrostatic measuring probe and the insulator rotates and the other one of the electrostatic measuring probe and the insulator moves horizontally can be achieved simultaneously by using equipment such as a multifunctional motion controller and a stepping motor, and it is ensured that the electrostatic measuring probe can scan and measure all parts of the surface of the insulator to be measured step by step.

A thermally protected surge suppression device comprises a housing and a base seat with a mounting plate. The base seat is provided with a surge suppression component and a thermal protection device, and the thermal protection device further comprises a metal bulge electrically connecting to the electrode B of the surge suppression component, a compression spring, a slider provided with an arc extinguishing component movable on the guide-track groove. In normal working condition, the conductive metal member electrically connects to the metal bulge via a low temperature solder. When the surge suppression component fails, the low temperature solder is melt owing to being passed through the power frequency fault current, the conductive metal member is disconnected from the metal bulge, the compression spring pushes the arc extinguishing component to move to obstruct the disconnected gap, and form an airflow to extinguish the electric arc between the conductive metal member and the metal bulge. The present invention provides a safer, more timely and reliable circuit protection.

Programmable antifuse transistor, in particular n-channel MOS transistor, and a method for programming at least one such antifuse transistor, includes at least one gate with a gate terminal, source with a source terminal, drain with a drain terminal, and substrate with a substrate terminal, configured so that active circuits/circuit elements do not have to be located at a distance from the antifuse, minimizing area requirements, without additional process steps the level of the potential difference between source terminal and substrate terminal is less than about 0.5 volts, drain terminal and source terminal lie at different potentials. By adjusting drain-source voltage and/or the gate-source voltage a flow of charge carriers occurs between source and drain, causing semiconductor material between source and drain to be thermally heated and to locally melt, forming at least one permanently conducting channel between source and drain.

The invention relates to a manufacturing method for a printed circuit board, wherein manufacturing of a multi-layer high-density interconnected printed circuit board can be realized by using the one-time compressing method. The method comprises the following steps that: first daughter boards and second daughter boards are manufactured; the plurality of first daughter boards and daughter boards are superposed together and heating and pressurizing are carried out, and thus the first daughter boards and the second daughter boards are bonded together to form a multi-layer and multi-stage printed circuit board; conventional processes like mechanical drilling, hole metallization, and electroplating and the like are carried out on the multi-layer printed circuit board so as to complete the manufacturing of the printed circuit board. According to the invention, expansion and shrinkage as well as deformation of materials during the manufacturing process can be effectively controlled, thereby effectively improving alignment precision between the holes and between the hole and the graph; and the safe distances between the holes and between the hole and the graph are reduced from 20 mil to 8mil, thereby effectively improving the wiring density of the printed circuit board. Moreover, under the circumstances that the investment of the PCB manufacturer equipment is not increased, the yield of the high-density interconnected printed circuit board can be substantially improved and the manufacturing period of the product can be shortened.

A safe operation rod for electric system outdoor operation is characterized in that the safe operation rod comprises a pair of pinchers, an insulation rod body, a steel brake cable, a brake cable pipe, a fixed seat, an operation handle and a connecting terminal. One handle of the pinchers is fixedly connected with the upper end of the insulation rod body, the operation handle is hinged to the fixed seat fixed on the lower portion of the insulation rod body, the upper end and the lower end of the brake cable pipe are arranged in the insulation rod body, the steel brake cable penetrates through the brake cable pipe, one end of the steel brake cable is connected with the tail of the other handle of the pinchers, the other end of the steel brake cable is connected with the operation handle, and the connecting terminal is fixedly arranged on the pinchers. The safe operation rod has the advantages that the safe distance in experiments can be increased, unsafe factors due to the fact that ladders and other tools are used in the experiments are reduced, and the probability of personal injuries due to the fact that failures of an arrester occur in the experiments is lowered.

The invention relates to a same-tower multi-loop power transmission line strain insulator string electrification replacing method and device. The method includes the following steps that: a distance between an operating cross arm and a jumper above the operating cross arm is extended, and an old insulator string is taken off; an insulating pull rope is tied on a buckling ring (9), and a buckling component (7) is installed at a side edge of a cross arm above an operating point, an insulating holding rod is rotatably connected with the buckling component (7), and a supporting rod (4) is perpendicular to the side edge of the cross arm, and the jumper is hung on a hanging hook (11); and an ground electrician pulls the insulating pull rope cooperatively, so that the supporting rod (4) rotates upwards, and the jumper rotates towards a position which is located above the outer side of a line until a worker on the operating cross arm can be separated from the jumper by an adequate safe distance assuredly, and then, the insulating pull rope is fixed. With the method and device of the invention adopted, an operation window can be expanded, and a technical problem that a worker cannot perform operation on an operating cross arm can be solved, and electrification maintenance work of cross arms at various layers of a 110kv-to-220kv same-tower multi-loop power transmission line can be realized.

The embodiment of the invention relates to the technical field of communication, and especially relates to a quantum communication method and device. The communication method and device are used for reducing the impact on a quantum optical signal from Raman noise during the mixed transmission of a classic optical signal and the quantum optical signal. In the embodiment of the invention, the method comprises the steps that a transmission apparatus generates a to-be-processed optical signal and a quantum optical signal, wherein the to-be-processed optical signal at least comprises the classic optical signal; the transmission device carries out the coupling of the to-be-processed optical signal and the quantum optical signal, and obtains and transmits the coupled optical signal. Because the wavelength of the classic optical signal is located at L band and/or C band and the wavelength of the quantum optical signal is located at S band, the wavelength of the band of the classic optical signal is greater than the wavelength of the band of the quantum optical signal, and the quantum optical signal can be located in an anti-Stokes scattering region, thereby effectively reducing the degree of impact on the quantum optical signal from the Raman noise.

A magnetic core includes an ellipse-shaped central post and two side posts. The ellipse-shaped central post includes a long axis and a short axis. The length of the long axis is greater than the length of the short axis. The two side posts are disposed on two sides of the ellipse-shaped central post and opposite to each other. The two side posts are connected with the ellipse-shaped central post through two connecting portions respectively for defining at least one winding space with the ellipse-shaped central post. By utilizing the ellipse-shaped central post, the volume of the winding space is increased, the diameter of the wire of the winding coil can be increased, the temperature of the winding encapsulation is easy to be lowered, the over-volume issue of the winding encapsulation is avoided, and the safe distance between the bobbin and the winding encapsulation is increased, so that the present disclosure meets the safety regulation.

The invention relates to a coiled type battery cell which is characterized by comprising an anode piece, a cathode piece and a diaphragm, wherein the diaphragm is used for partitioning the anode piecefrom the cathode piece; both the anode piece and the cathode piece are coated with coating layers; the diaphragm is arranged between the anode piece and the cathode piece; an anode lug is arranged atone end of the anode piece; a cathode lug is arranged at one end of the cathode piece; one end, far away from the anode lug, of the anode piece, and one end, far away from the cathode lug, of the cathode piece are first coiling ends; the anode piece, the cathode piece and the diaphragm are coiled from the first coiling ends layer by layer in the same direction; the anode piece is wrapped by the cathode piece at the tail coiling end; and a safe distance is formed between the anode lug and a cathode lug. According to the coiled type battery cell provided by the invention, the distance between the anode lug and the cathode lug is increased by changing the coiling direction, the risk of short circuit can be reduced, heat radiation of a battery can be facilitated, and the performance of the battery can be improved.

The invention relates to an overhead line live working method, in particular to a method for expanding the live working safety distance of ground potential of the cross arm of a strain tower. An insulation distance required must be kept between a jumper wire and the cross arm, the jumper wire is opened by a distance expanding bar to increase the distance between the jumper wire and the cross arm at the lower part; a distance limiting bar and the distance expanding bar guarantee the jumper wire to be fixed at a certain position so as to ensure that the operators have sufficient space to operate. Compared with the prior art, the method of the invention has the advantages that: the safety distance is expanded by using the overhead characteristic of the jumper wire to ensure that the operators have sufficient activity space on the cross arm of the strain tower; the expanding method is simple and practical and the operation is convenient so that wiremen can master the method on the basis of skill and no special learning is needed.

The invention provides an initiation safety device which comprises a perforation initiation safety device body, an explosion-transferring channel, an anti-explosion piston and an elastic device, wherein the explosion-transferring channel is arranged in the perforation initiation safety device body; the anti-explosion piston is arranged in the perforation initiation safety device body in a movable mode and switches connection and disconnection of the explosion-transferring channel; the elastic device is arranged in the perforation initiation safety device body and is connected with the anti-explosion piston; the moving direction of the anti-explosion piston is not the same as the direction of the explosion-transferring channel. The initiation safety device replaces a safety interlayer gun used in a traditional oil pipe perforation process, construction is simple, perforation cost is saved, the security coefficient is high, and the on-site construction effective rate is high.

The invention relates to a lighting device, in particular to a high-safety LED (Light Emitting Diode) lamp in the lighting device and provides the high-safety LED lamp, which comprises an optical diffusion cover and a radiating shell which are looped, wherein the radiating shell is provided with a light source circuit board; the light source circuit board is electrically connected with a light emitting diode; a forked clamping arm and a forked pressing foot are arranged on both sides of the optical diffusion cover respectively; a first clamping groove is arranged on two sides of the radiating shell respectively; the forked clamping arms are connected with the first clamping grooves in a buckling manner; and the light source circuit board is clamped between the forked pressing feet and the radiating shell. The high-safety LED lamp has the beneficial effects that the light source circuit board can be fixedly arranged through the forked pressing feet, so that the safety distance between the radiating shell and the light emitting diode on the light source circuit board is prolonged to improve the safety.

This invention provides transformer structure, it includes basal seat, cylinder body with hollow inner part, first and second shield slides are set on both sides of the two ends, and the first slide is at out side of the second, symmetrical and open outer V style board are both set on the board. The two foot connecting parts are set at edge part of the second slide, and extend out the V style open out side; many electro-linking feet are set on it. Several coils electro-linked are connected to electro feet position. Two iron cores, they are one end open circle cover style, two symmetrical stables are set to form two circle wall that outer edge open out, one column that open through outer is set at center of the same side of the same circle wall, two open outer V style slot open are set at the stable center. This invention can save material cost, and its installation is easy and fast, it is transformer structure that saves man hour cost.

A ladder includes a standing frame comprising two parallel standing side legs, a plurality of step platforms transversely extended between the standing side legs of the standing frame, and a side support enhancement including two side ground supports each having a ground end and a pivot end pivotally connected to the respective standing side leg, two reinforcing arms pivotally connected to the side ground supports respectively; and two sliding joints for slidably connecting the reinforcing arms with bottom ends of the standing side legs respectively. Therefore, the reinforcing arms are slid inwardly to pivotally pull the side ground supports to align with the standing side legs respectively to form a compact unit and are slid outwardly to pivotally push the side ground supports away from the standing side legs respectively so that the side ground supports are inclindedly and outwardly extended from the standing side legs respectively.

The invention discloses an electric goods taking trolley. The electric goods taking trolley comprises a supporting chassis. A walking mechanism is arranged at the bottom of the supporting chassis and connected with a drive device driving the walking mechanism to move. The drive device is further connected with a goods carrying platform lifting mechanism arranged on the supporting chassis and driving a goods carrying platform to rise and fall, and a human carrying platform lifting mechanism arranged on the supporting chassis and driving a human carrying platform to rise and fall. A control console synchronously rising and falling together with the human carrying platform and partitioning the space of the goods carrying platform and the personnel operation space of the human carrying platform is arranged on the human carrying platform. The control console is connected with the drive device. The electric goods taking trolley can walk with the help of power under control of operating personnel and is convenient to operate; by means of the goods carrying platform and the human carrying platform which are independent and can rise and fall, separation of the goods containing space and the operating personnel operation space can be effectively achieved, and the problem that interference exits between the two spaces in one platform in the prior art is effectively saved; and by arranging the control console to partition the spaces, operating personnel can have a larger operation space, and meanwhile the operating personnel are protected to a certain extent.

The invention relates to a power distribution device of a power system, in particular to a lightning protection support column insulator. The insulator is provided with a core rod, and two ends of thecore rod are respectively provided with an electrode and a wiring device. The insulator comprises a positioning device cooperating with the core rod, and the positioning device can rotate relative tothe core rod. The positioning device is connected with an arc starting rod. The insulator can adjust the angle between an arc starting body and an installation conductor, can guarantee that the safety distance between a spherical head of the arc starting rod and other metals or conductors is greater than a discharge interval distance of an insulating arc starting body.

The invention discloses a suction-sweeping device for a live power distribution cabinet. The device comprises a rotating brush head, an operating hollow rod and a dirt suction unit; the section size of the rotating brush head is smaller than a preset size, and the rotating brush head comprises a brush head end and a coupling end; the coupling end of the rotating brush head is hollow, and communicates with the lower part of the brush head end; the coupling end of the rotating brush head is connected to the operating hollow rod; the brush head end of the rotating brush head is used for making contact with a to-be-suction-swept surface, and dirt on the surface is swept and sucked into the brush head through rotation of the brush head; the dirt is conveyed into the operating hollow rod throughthe coupling end of the brush head; the other end of the operating hollow rod is connected to the input end of the dirt suction unit; the operating hollow rod is made of insulating materials, and held by an operator; the dirt suction unit is used for providing suction, so that the dirt is sucked into a dirt collecting bag of the dirt suction unit through the rotating brush head and the operatinghollow rod; and the device is high in cleaning efficiency for the live power distribution cabinet, flexible in operation, and safe and convenient.

The present invention discloses a relay improvement structure. The structure comprises a housing, an upper cover, a control system, a sliding block, terminals, steel balls, a gap and screws. The control system is located in the inner cavity of the housing, the upper cover is buckled on the housing, the terminals are extended out of the terminal extension holes of the housing and are arranged at the external portion of the housing after bending once, the control system comprises normally closed contacts, normally open contacts, a moving contact, an armature, a reset spring, an iron core, coils and springs, and the normally open contacts can be move up and down. The normally closed contacts and the normally open contacts are mutually moved to generate touch to indirectly increase the safety distance between the normally closed contacts and the normally open contacts and ensure the absolute contact of the moving contact and the normally closed contacts in a reset state so as to ensure the safe and reliable operation of the relay improvement structure.