40results about How to "Short delivery path" patented technology

The invention discloses a method for preparing an efficient hydrolysis metal sulfide electrode material through a one-step method. The method includes the following steps that nickel foam obtained after ultrasonic treatment serves as a carrier and is soaked into a high pressure reactor containing metal sulfide and a precursor, a hydrothermal reaction is made at 140 DEG C-200 DEG C so that the metal sulfide can be loaded on the nickel foam, and reacting is carried out for 6 h. the method has the following beneficial effects that (1) the three-dimensional porous metal sulfide is directly synthesized without the help of a template, the hydrolysis hydrogen evolution and oxygen evolution catalytic activity site density is high, the electronic transferring path is short, and the catalytic performance is good; (2) the metal sulfide of a nano-structure is directly connected with the electrical conductive nickel foam carrier, the contact and the electrical conductivity are good, the specific conductance and the electron transferring efficiency are better improved, and overpotential needed by energy barriers is reduced to a large extent; and (3) electrolyte can enter the interior of the porous electrode material easily, the electric current density is high, the crystal structure is stable, and the circulated stability and durability of the material are greatly improved.

A return spring adjustment apparatus and method of a wave power system. The apparatus comprises return springs (5, 9), a stepper motor (6), transducers (7, 10, 27, 29), a single chip microcomputer control module (8) and a power source. The two ends of the return springs (5, 9), a chassis (12) of the stepper motor, a rotor (11), the two ends of the transducers (7, 10, 27, 29) can all be randomly arranged in series, and connected with a spindle (4) and a frame (22). When a single chip microcomputer detects that the transducers (7, 10, 27, 29) measure that the pulling force is too large or too small, it sends an instruction to the stepper motor (6) to perform adjustment. After the adjustment is completed, the stepper motor (6) stalls and brakes, so that the return springs (5, 9) can work in within a specified range.

The invention discloses a digital coal yard intelligent control scheme based on GPU computing. The digital coal yard intelligent control scheme comprises a master control system, a real-time inventorymonitoring system, a bucket intelligent operation system, an coal blending mix-burning expert decision-making system, a fuel input and consumption management system and an online detection and prevention system. The digital coal yard intelligent control scheme is characterized in that the master control system is located in a master control room, is composed of a parallel computer group and performs big data calculation by using a GPU; the real-time inventory monitoring system acquires 4D data of a coal pile through laser scanning and transmits the 4D data to the master control system for coal pile parameter identification and judgment, and then simulates to generate a dynamic and visible 4D model; the bucket intelligent operation system performs the collection and transmission of data such as mass, temperature, humidity, heat, impurity of the coal pile and the position of a bucket through an intelligent chip reading device; the coal blending mix-burning expert decision-making systemis used for calculating a blending scheme according to the current situation of coal storage in a coal yard to form a cost optimization ranking table; the fuel input and consumption management systemperforms storage and coding by a SQL Server database, and the calculation amount is output to the master control system for deployment; and the online detection and prevention system comprises an environmental online detection module, an explosion-proof module and an anti-spontaneous combustion module. The digital coal yard intelligent control scheme based on GPU computing uses the system integration and heterogeneous data fusion technology to realize the fusion and sharing of relational data, real-time data and spatial data.

The invention provides a multi-monomer directly equalizing device and method of a series battery pack, and relates to a monometer equalizing circuit of the series battery pack. The multi-monomer directly equalizing device and method of the series battery pack solve the problems that direct energy transfer between any two energy storage monomers can not be achieved, the energy equalizing path is long and the energy equalizing efficiency is low according to an existing energy equalizing device between the energy storage monomers. The series battery pack is formed by series connection of m+n monomer batteries. The multi-monomer directly equalizing device comprises a transformer and m+n bilateral switches, wherein the transformer is provided with m+n windings, the first m energy storage monomers in the series battery pack are used as the first group, and the last n energy storage monomers in the series battery pack are used as the second group; m coils in the m+n windings of the transformer are in one-to-one correspondence with the m energy storage monomers in the first group respectively, and the rest of the n coils are in one-to-one correspondence with the n energy storage monomers in the second group respectively; the m+n windings share one magnetic core, and the number of turns of the m+n windings is equal, so the energy direct transfer between any two energy storage monomers can be achieved. The multi-monomer directly equalizing device and method can be applied to the field of energy equilibrium of the series energy storage monomers.

The invention provides a method for detecting a bearing fault of a wind generating set. The method comprises the following steps of: at first, collecting instantaneous angular velocity signals of a rotor of the wind generating set; secondly, judging whether a rotor generates torsional vibration or not according to the fact of determining whether the instantaneous angular velocity signals of the rotor of the wind generating set are equal to a stable angular velocity or not when the rotor works in a stable state; if so, using an envelope demodulation method to analyze the collected instantaneous angular velocity signals of the rotor; if the collected instantaneous angular velocity signals comprise a bearing fault characteristic frequency, expressing that a bearing of the wind generating unit has a fault. According to the method provided by the invention, the torsional vibration signals can be directly measured on a shafting of the wind generating unit, so that the measured transmission path of the torsional vibration signals is short; the signal-to-noise ratio is high; and the fault information of the bearing can be clearly reflected.

The invention provides a series connected energy storage power tri-monomer direct equalizer and relates to a series connected energy storage power monomer equalization circuit. The invention solves the problems that two adjacent energy storage monomers can not directly equalize the energy and the work efficiency is low. The invention comprises a first winding, a second winding, a third winding, a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first diode, a second diode, a third diode and a fourth diode, wherein, the four diodes are respectively reversely connected in parallel with the four switching tubes, anodes of the diodes are connected with source electrodes of the switching tubes, cathodes of the diodes are connected with drain electrodes of the switching tubes, the source electrode of the first switching tube is connected with a corresponding terminal of the first winding and the drain electrode of the second switching tube, the source electrode of the second switching tube is connected with the drain electrode of the third switching tube and the drain electrode of the fourth switching tube, the source electrode of the third switching tube is connected with an unlike terminal of the second winding, the source electrode of the fourth switching tube is connected with a corresponding terminal of the third winding, a corresponding terminal of he second winding is connected with an unlike terminal of the third winding; three windings are wound on the same iron core and have the same number of turns.

The invention relates to an MEMS gas sensor chip and sensor and a preparation method of the sensor, belongs to the technical field of gas detection, and solves the problems of high technical cost, long response time and low environment stability in the prior art. The MEMS gas sensor chip comprises a gas sensitive unit, a temperature sensitive unit, a sensitive structure substrate and a temperaturecontrol unit. The MEMS gas sensor comprises the MEMS gas sensor chip and a control circuit, and the control circuit further comprises a microcontroller, an N type MOSFET, a P type MOSFET and a positive-negative power supply. The microcontroller compares a practical temperature collected by the temperature sensitive unit with a preset temperature, outputs a control signal according to a comparisonresult, controls ON / OFF of the N type MOSFET and the P type MOSFET, and further controls the direction and magnitude of a current through the temperature control unit and changes the surface temperature of the sensitive structure substrate. The MEMS gas sensor is simple in operation and high in versatility, can measure the concentration of different gases simultaneously, saves the cost, and is short in response time and high in environment stability.

The invention relates to a novel heating system which comprises a decorative surface layer, substrates and matted thermal insulating layers, wherein the decorative surface layer can be made of ceramic tiles, stones, wooden floors, plastic floors, carpets and other ground decorative materials suitable for ground paving; each substrate is formed by compounding a substrate body and a heat-conducting medium layer, a longitudinally-extended heating element containing cavity can be encircled between two adjacent substrates, the wall of the cavity is the heat-conducting medium layer, and a heating element can be contained in the cavity; each matted thermal insulating layer is paved below each substrate to play roles of thermal insulation and fixation; after the substrates and the matted thermal insulating layers are partially or integrally paved, the decorative surface layer is paved on the surface through appropriate adhesives; and the heat of the heating element in each containing cavity is quickly transferred onto the upper surface of each substrate through each heat-conducting medium layer, and then, the heat is transferred to the decorative surface layer to realize the purpose of heating.

The invention discloses a rapid batch ball picking-up device applied to a table tennis training base. The device comprises a moving mechanism, a ball scraping mechanism, a transfer mechanism and a collection bag, wherein the moving mechanism comprises a collection tank, two front wheels, two rear wheels and a push frame; the collection tank is of a box-shaped structure of which the front end is open; two bearings are arranged at the front end of the collection tank; a connecting shaft penetrates through the two bearings; the two front wheels are respectively fixed at two ends of the connecting shaft; the two rear wheels are fixed on the rear lower side of the collection tank; the push frame is fixed above the collection tank; the transfer mechanism comprises a sleeve, and a ball inlet and a ball outlet which are respectively formed in the lower part and the upper part of the sleeve; the collection bag is arranged at the ball outlet; and a lifting structure used for lifting table tennis balls from bottom to top is arranged in the sleeve. With the adoption of the above structure, the ball picking-up operation can be efficient, the table tennis balls can be collected into the collection bag from the ground without bending down, and the balls can be uninterruptedly picked up basically.

The invention relates to an optical element (2) intended for installing in a laser material machining tool and having first surface that is optically unused and / or not captured by the laser beam during operation of the laser machining tool, wherein a transponder (7) is arranged in the region of the surface and comprises readable information with respect to the optical element (2).

The invention relates to a device for strengthening a laser cladding layer through high-frequency vibration rolling and a using method thereof, and belongs to the field of metal material surface strengthening. The device comprises a laser cladding system and an ultrasonic rolling system; the laser cladding system comprises a robot arm and a laser cladding head; and the ultrasonic rolling system comprises an ultrasonic rolling system support, an ultrasonic vibration device, a pressing roller and the like. Ultrasonic rolling is carried out while the laser cladding layer is formed, and the pressing roller acts on the edge of a molten pool. Ultrasonic vibration applied to the pressing roller can refine cladding layer grains and optimize the mobility of metal in the molten pool, so that tissue distribution is uniform, bubbles are easy to escape, and microdefects are reduced. The rolling of the pressing roller in an action area not only can realize surface grain refinement on a semi-solidified or just solidified cladding layer, convert residual tensile stress into residual compressive stress and improve the comprehensive performance of the cladding layer, but also can enable the surface of the cladding layer to be smooth and tidy, and can meet the surface quality and size requirements of most parts.

The invention provides a lithium ion power battery liquid cooling module. A battery module is formed through assembly of a plurality of battery module units, wherein clamping grooves where liquid cooling flat pipes are stored are formed in the upper surfaces of the lower surfaces of the battery module units; the clamping grooves are parallel to the length direction of the battery module; the liquid cooling flat pipes which are arranged back and forth are arranged in the lithium ion power battery liquid cooling module, the liquid cooling flat pipes extend in the length direction of the batterymodule, and bend at the end part of the battery module, and the liquid cooling flat pipes penetrate through the positions between adjacent battery module units. The integrated liquid cooling pipelinesare designed in the battery module, rapid cooling and heating of the module can be achieved under the premise that the temperature uniformity of the module is maintained, and the lithium ion power battery liquid cooling module has an excellent heat management property; parameter adjustment and matching design can be conducted according to the heat management requirements, and the lithium ion power battery liquid cooling module has an extremely high temperature adaptive capacity, and the gravimetric specific energy density and the volumetric specific energy density of the battery module can beeffectively improved; and the modularized design is adopted, the lithium ion power battery liquid cooling module is convenient, rapid and efficient to assemble.

The invention provides a coiled material tension control system which comprises a fixed plate, fixed rollers and movable rollers. The coiled material tension control system is characterized in that the fixed rollers and the movable rollers are respectively located on the two sides of the fixed plate in sets, one end of each movable roller is mounted on a sliding plate, a rodless air cylinder and a linear displacement sensor which are in parallel are further mounted on the fixed plate, and the sliding plate is connected with an air cylinder sliding table of the rodless air cylinder and a sliding block of the linear displacement sensor. The rodless air cylinder applies pushing force which pushes the sliding plate to be away from the fixed roller set to the sliding plate all the time, the pushing force is in balance with the preset tension of coiled materials, when the balance between the pushing force and the preset tension is broken, the sliding block moves and sends out signals to a control unit, and when the displacement of the sliding block exceeds a preset range, the control unit gives instructions to adjust the rotating speed of an unreeling motor. The coiled material tension control system is simple in structure and convenient to mount and debug, the adjusting travel is large and can be set with numerical values, the response speed is high, equipment is compact in structure and small in size, and mounting space is saved.

The invention discloses a sensor integrated sliding type bearing structure capable of obtaining angular domain vibration signals. The sensor integrated sliding type bearing structure comprises a bearing. The bearing comprises a rotor and a stator. An acceleration sensor is fixed to the end face of one end of the rotor. The end, close to the acceleration sensor, of the outer circumferential face of the rotor is fixedly sleeved with an insulation base body ring. The outer circumferential face of the insulation base body ring is provided with at least three annular grooves coaxial with the rotor. Each annular groove is internally provided with a contact ring. Each contact ring is electrically connected with the acceleration sensor through a wire. The end, close to the insulation base body ring, of the bearing is provided with a sealing ring located between the stator and the rotor. The sealing ring is provided with contact brushes at least in one-to-one correspondence with the contact rings. Brush heads of the contact brushes are arranged on the corresponding contact rings in an overlapped mode. Each contact brush is connected with a wire. In this way, the vibration and rotating speed information of the rotor of the bearing is monitored through the acceleration sensor, bearing fault information is obtained more accurately, arrangement is more compact, and the number of adopted sensors is smaller.

The invention discloses a plate positioning device, a material containing mechanism, a plate machining center and a machining method. The plate positioning device comprises a plate positioning devicebody used for vertically positioning plates and a material groove of the plate machining center, the machining center comprises a rotating mechanism, a first driving mechanism used for bearing the rotating mechanism to move in the Y-axis direction and the Z-axis direction relative to a machine tool, a machining head and a workbench, and a second driving mechanism used for driving the machining head to move; and the rotating mechanism comprises a mechanical arm, the first driving mechanism drives a mechanical arm of the rotating mechanism to position the to-be-machined plates perpendicular to the machine tool and then place the to-be-machined plates into the workbench. The plate positioning device body is vertically arranged, so that the plates are positioned in the vertical direction, thearea occupied by the positioning device in the machining center is effectively reduced, and the production efficiency of the whole machine is improved.

A die bonding method for flip LED chips comprises the following steps: (1) designing a flip circuit board, wherein the periphery of the flip circuit board except a die bonding area is coated with highly-reflective ink, the die bonding area has a positive pad and a negative pad, and a block clearance is formed between the positive pad and the negative pad; (2) dropping longitudinal conductive adhesive on the die bonding area to cover the positive pad and the negative pad, and placing a flip LED chip in the die bonding area; (3) placing the flip LED chip at 100-130 DEG C for 4-6 minutes to cure the longitudinal conductive adhesive; (4) hot pressing the flip LED chip in a hot press, wherein the pressure is 80-120kpa, the heating temperature is 130-170 DEG C, and the time lasts 50-70 seconds; and (5) completing die bonding of the flip LED chip. The phenomenon that the chip electrodes may be short-circuited in the traditional die bonding process is avoided.

A haptic feedback device includes: a shell, an elastic substrate, a mass block and laminated piezoelectric ceramic, the laminate piezoelectric ceramic is fixedly connected to the bottom surface of theshell, the mass block is secured to one end of the elastic substrate and move between an initial position and an impact position, and the other end of the elastic substrate is fixedly connected in the shell. At the initial position, the mass block abuts against the top surface of the laminate piezoelectric ceramic; after receiving the driving signal, the laminated piezoelectric ceramic can be longitudinally telescoped to drive the mass to move from the initial position to the impact position. When the mass block moves to the impact position, the mass block drives the elastic substrate to impact the shell, and the mass block moves from the impact position to the initial position under the elastic action of the elastic substrate to impact the laminated piezoelectric ceramic. The mechanicalenergy transmission path of the haptic feedback device is short, and the energy loss is small, so that the vibration amplitude is large, the response is quick, and the human can feel the strong vibration effect from the shell.

The invention provides a rapid heat exchange device based on heat conduction and medium phase change, and the device comprises at least one heat exchange assembly which comprises a hydrogen heat exchange part, an air heat exchange part and an integrated device shell; the hydrogen heat exchange part is arranged in the integration device shell in the first direction, the air heat exchange part is arranged in the integration device shell in the second direction, and the first direction intersects with the second direction. The hydrogen heat exchange part is located above the air heat exchange part, high-temperature gas subjected to heat exchange by the air heat exchange part ascends to exchange heat with low-temperature hydrogen of the hydrogen heat exchange part above, low-temperature gas subjected to heat exchange by the hydrogen heat exchange part descends based on gravity and then exchanges heat with the air heat exchange part below again, and the high-temperature air is cooled through reciprocating circulation; and the low-temperature hydrogen is heated to realize rapid heat exchange. The integration level of the whole machine is effectively improved; the cooling liquid capacity in the thermal management system is reduced, the response speed of system temperature control is increased, and the robustness of the thermal management system is improved.

The invention relates to an MEMS gas sensor chip and sensor and a preparation method of the sensor, belongs to the technical field of gas detection, and solves the problems of high technical cost, long response time and low environment stability in the prior art. The MEMS gas sensor chip comprises a gas sensitive unit, a temperature sensitive unit, a sensitive structure substrate and a temperaturecontrol unit. The MEMS gas sensor comprises the MEMS gas sensor chip and a control circuit, and the control circuit further comprises a microcontroller, an N type MOSFET, a P type MOSFET and a positive-negative power supply. The microcontroller compares a practical temperature collected by the temperature sensitive unit with a preset temperature, outputs a control signal according to a comparisonresult, controls ON / OFF of the N type MOSFET and the P type MOSFET, and further controls the direction and magnitude of a current through the temperature control unit and changes the surface temperature of the sensitive structure substrate. The MEMS gas sensor is simple in operation and high in versatility, can measure the concentration of different gases simultaneously, saves the cost, and is short in response time and high in environment stability.

The invention relates to a wireless bone conduction sound receiving and transmitting ring, which comprises: a body having a ring-shaped structure and used for being worn on the finger of a user; a wireless transceiver positioned on the body and used for receiving and transmitting the sound signal of an external wireless communication device; a bone conduction horn positioned on the body, connected to the wireless transceiver, and used for receiving the sound signal transmitted by the wireless transceiver and generating mechanical vibrations having different corresponding frequencies according to the received sound signal, wherein the mechanical vibration can be outwardly transmitted to the head bone of the user through the finger of the user when the finger of the user contacts the skin close to an ear so as to be further transmitted to the hearing system of the user, such that the user can generate the hearing so as to hear the sound signal; a microphone positioned on the body, connected to the wireless transceiver and used for collecting the sound of the user; and a battery arranged on the body, connected to the wireless transceiver and used for providing power.

The invention discloses an electrical connector assembly, comprising a first gasket and a second gasket, wherein the first gasket is provided with a first area and is far from an electrical lead relative to a contact area, the second gasket is provided with a second area and is close to the electrical lead relative to the contact area, the first area has a first border, the projection of the firstborder in the longitudinal direction falls into the projection range of the second area in the longitudinal direction, the first area is shortened, and the invalid branch formed on the first gasket and used for electrical signal transmission becomes short, so that the electrical lead is good in transmission and the loss of electrical signals is reduced. The second area has a second border, the projection of the second border in the longitudinal direction falls into the projection range of the first area in the longitudinal direction, the second area is shortened, and the transmission path ofelectrical signals on the second gasket becomes short, so that the transmission efficiency of the electrical signals is improved and the loss of the electrical signals is reduced.

The invention provides a series connected energy storage power tri-monomer direct equalizer and relates to a series connected energy storage power monomer equalization circuit. The invention solves the problems that two adjacent energy storage monomers can not directly equalize the energy and the work efficiency is low. The invention comprises a first winding, a second winding, a third winding, afirst switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first diode, a second diode, a third diode and a fourth diode, wherein, the four diodes are respectively reversely connected in parallel with the four switching tubes, anodes of the diodes are connected with source electrodes of the switching tubes, cathodes of the diodes are connected with drain electrodes of the switching tubes, the source electrode of the first switching tube is connected with a corresponding terminal of the first winding and the drain electrode of the second switching tube, the source electrode of the second switching tube is connected with the drain electrode of the third switching tube and the drain electrode of the fourth switching tube, the source electrode of the third switching tube is connected with an unlike terminal of the second winding, the source electrode of the fourth switching tube is connected with a corresponding terminal of the third winding, a corresponding terminal of he second winding is connected with an unlike terminal of the third winding; three windings are wound on the same iron core and have the same number of turns.

The invention discloses an eccentric shaft lifting sliding table feeding mechanism used for fully-automatic balance correction equipment. Two translational guiding rails of a base part are fixedly mounted on a sliding table bottom plate; each translational guiding rail is provided with two sliding blocks; a translational cantilever part and a lifting driving part are positioned on the two sides of the sliding table bottom plate and fixed on the respective sliding blocks; a horizontal driving part is fixed on the sliding table bottom plate; the horizontal driving part is connected with the translational cantilever part for driving a main shaft head lifting part, which horizontally moves along the translational guiding rails, of the translational cantilever part, to form a hinge connection relation with the translational cantilever part and the lifting driving part separately; and the lifting driving part drives the rotation of the main shaft head lifting part to form linkage with the translational cantilever part. By adoption of the eccentric shaft lifting sliding table feeding mechanism, the feeding speed, the feeding direction and feeding distance of the mechanism can be effectively controlled, and relatively high feeding rigidity and positioning precision, relatively compact structure and reduced space are realized.

The invention discloses an air valve lift device and a vehicle with the same. The air valve lift device comprises an air valve assembly, a middle rocker assembly, a camshaft, a driving rocker and an actuating mechanism. The middle rocker assembly comprises a middle swing arm. The driving rocker is provided with a first profile face and a second profile face. The first profile face is matched withthe middle swing arm. The camshaft drives the driving rocker to act through the middle swing arm. The second profile face is matched with the air valve assembly so as to drive an air valve of the airvalve assembly to move. The actuating mechanism is used for driving the driving rocker to act round an adjusting axis so as to change the lift quantity of the air valve assembly. According to the airvalve lift device, the middle swing arm, the driving rocker and the actuating mechanism are arranged, and thus the lift of the air valve can be changed. In addition, the structure is simple, manufacturing cost is low, the power transmitting path from the camshaft to the air valve lift device is short, and thus driving force transmitting efficiency of the air valve lift device is high.

The invention provides a multi-monomer directly equalizing device and method of a series battery pack, and relates to a monometer equalizing circuit of the series battery pack. The multi-monomer directly equalizing device and method of the series battery pack solve the problems that direct energy transfer between any two energy storage monomers can not be achieved, the energy equalizing path is long and the energy equalizing efficiency is low according to an existing energy equalizing device between the energy storage monomers. The series battery pack is formed by series connection of m+n monomer batteries. The multi-monomer directly equalizing device comprises a transformer and m+n bilateral switches, wherein the transformer is provided with m+n windings, the first m energy storage monomers in the series battery pack are used as the first group, and the last n energy storage monomers in the series battery pack are used as the second group; m coils in the m+n windings of the transformer are in one-to-one correspondence with the m energy storage monomers in the first group respectively, and the rest of the n coils are in one-to-one correspondence with the n energy storage monomers in the second group respectively; the m+n windings share one magnetic core, and the number of turns of the m+n windings is equal, so the energy direct transfer between any two energy storage monomers can be achieved. The multi-monomer directly equalizing device and method can be applied to the field of energy equilibrium of the series energy storage monomers.