80results about How to "Eliminate reliability" patented technology

The present invention provides a real estate evaluation method with multi-model integration, which includes the following steps: determining the real estate price influencing factor; constructing a real estate transaction case database according to the determined real estate price influencing factor; obtaining real estate transaction cases in relevant areas through the real estate to be evaluated; screening the real estate data to obtain comparable transaction cases; quantify the housing price impact factors and calculate the weights of housing price impact factors; use set pair analysis model, VIKOR model, fuzzy mathematical model, and neural network model to calculate relevant parameters respectively; correct the time of real estate transaction cases, and estimate Property prices to be appraised. The present invention adopts spatial information technology to establish a real estate database, and based on this, constructs a precise quantification method for real estate valuation factors and a batch evaluation mode for real estate prices fused with multiple mathematical models, which overcomes the subjective nature of price influencing factors in traditional single-model valuation methods The problem of uniqueness and the singleness of the valuation model.

The invention relates to a cable fixing device, which comprises an adjustable mounting rack capable of adjusting high, low, front and rear positions of cable fixing clamps and at least one cable fixing clamp which is fixedly arranged on the adjustable mounting rack, wherein each cable fixing clamp comprises a clamping seat used for clamping a cable through a locking device after the alignment of the cable and a clamping cover; clamping through slots for clamping the cable are formed in the clamping seats; hollow cavities are respectively formed in two side walls of the clamping through slots; clamping bulges which can be inserted into the corresponding hollow cavities when the clamping covers and the clamping seats are aligned are arranged on aligned end faces of the clamping covers; and cable clamping surfaces on the clamping bulges and the clamping through slots on the clamping seats form cable clamping space of which the size is changed along with change of the alignment depth of the clamping covers and the clamping seats. By the cable fixing device, the stress of mechanical fastening on the cable can be reduced, the cable mounting reliability is improved, faults of cable heads are reduced, and the same cable fixing clamp can be matched with cables of different wire diameters. The invention also relates to a cable fixing clamp.

A device for fastening permanently or temporarily implantable medical devices includes a main body (1) having a first end (1a) and a second end (1b), a flexible and extensible body section (2) therebetween, and a first inflexible and inextensible body support (3) which is fixedly attached to the body section (2) at the second end (1b) of the main body (1), whereby the extensible section (2) can be converted from an unextended state to an extended state in which it is lengthened in comparison with the unextended state. At least one first flexible finger-shaped anchor (4) protrudes away from the main body (1) and is attached to the first body support (3) at an anchor mount (4a). At least one first flexible retraction device (5) is provided for retraction of a respective first anchoring means (4), wherein the retraction device (5) is connected to the body section (2) and to the anchor (4). On conversion of the body section (2) from the unextended state to the extended state, the retraction device (5) does not expand, so that the respective anchors (4) are moved in the direction of the main body (1).

The invention discloses an electronic cigarette welding structure which comprises a tube body and a suction nozzle cover. An ultrasonic line is arranged, corresponding to the end portion of the tube body, on the suction nozzle. The ultrasonic line is a circular-ring-shaped protrusion. The suction nozzle cover is fixed at one end of the tube body through ultrasonic welding. The invention further discloses an ultrasonic welding die which comprises a bottom die and a middle die. The bottom die and the middle die correspond to each other. A plurality of position holes used for placing the tube body are correspondingly formed in the bottom die and the middle die. A tube body base, a spring and a bottom die spring fixing piece are sequentially arranged at the bottom of the position holes in the bottom die from top to bottom. The two ends of the spring are respectively connected to the tube body base and the bottom die fixing piece. The invention further discloses an ultrasonic welding method. Through the electronic cigarette welding structure, the suction nozzle cover and a glass fiber tube can be firmly connected with the tube body, so that the problem that tobacco tar pollution or infirmness caused by traditional adhesion or fitting connection is avoided, a user is prevented from being hurt, and the problems of not protecting the environment and being not sanitary and not reliable are eradicated.

The invention discloses a comprehensive load series connection arc fault identification method. The method includes the steps of obtaining a main circuit current feature information through a current sensor or obtaining branch circuit loading end voltage feature information signals through voltage sensors, conducting A/D sampling at a fixed sampling frequency, then, filtering noise out of the sampled signals through a filtering algorithm, analyzing the main circuit current feature information signal and branch circuit loading end voltage and arc fault feature information and comparing the main circuit current feature signal and the branch circuit loading end voltage and arc fault feature information with preset threshold values, judging whether arc faults may occur to the voltages of the loading ends of the branches and the current of the main circuit or not, determining whether arc faults occur to a circuit by combining the arc fault judgment result of the branches and the main circuit with the arc fault judgment result of arc faults with relatively weak features after comprehensive parallel connection is achieved, and determining the specific branch circuit according to the voltages of the branch circuits. According to the method, the loading series connection arc faults with obvious fault features under the single loading or the comprehensive loading can be detected, and the load series connection arc faults with relatively weak fault features under the comprehensive loading can be detected.

A silicon mass flow sensor manufacture process that enables the backside contacts and eliminates the conventional front side wire binding process, and the assembly of such a mass flow sensor is disclosed in the present invention. The achieved assembly enhances the reliability by eliminating the binding wire exposure to the flow medium that may lead to detrimental failure due to the wire shortage or breakage while the miniature footprint could be maintained. The assembly further reduces flow instability from the flow sensor package including the bump of wire sealing. The invented mass flow sensor assembly can be a flow sensor module if the supporting sensor carrier is pre-designed with the control electronics. Without the control electronics, the said mass flow sensor assembly is easy to install into desired flow channels and connect to the external control electronics.

The invention aims to provide a method and a device used for data storage. The processing device determines one or a plurality of corresponding candidate storage scheme information according to data storage requests, and determines corresponding optimized storage scheme information according to performance index information corresponding to the candidate storage scheme information, so as to process data storage requests. Compared with the prior art, according to different hardware medium service qualities, data is distributed to proper storage mediums according to the degree of importance, so that the data corruption and loss probabilities can be reduced; meanwhile, the service quality of the medium is changed in real time according to a practical situation, and potential faults can be earlier found by using the device, so that the damage caused by imminent hardware trouble can be prevented; therefore, a data grading topology which senses the storage medium service qualities can be realized, the influence on storage performance and reliability of the storage system caused by the different storage medium service qualities can be eliminated, and a strategy for controlling the storage cost can be realized.

The present invention relates to an electrostatic protection circuit for protecting an internal circuit. The internal circuit is connected with a converter, and can be driven by first and second voltage source. The converter can convert first input signal which is received by input soldering lug and has first magnitude into second input signal with second magnitude and input it into internal circuit. Between the input soldering lug and first voltage source the mutually-reversed first and second diodes are connected. Said electrostatic protection circuit includes a transistor, an inverter, a resistor, a capacitor and a voltage clamper. The source of the transistor is connected between two diodes, its drain is connected with second voltage source, the outupt end of the inverter is connected with grid of transistor, the resistor is connected between the source of transis

Provided is a differential-pressure linear flowmeter. A filter is fixed at one end of a measurer. A filter screen in the filter is obliquely arranged between an inlet end and an outlet end of a filter pipe section. Two ends of a bypass pipe of the measurer communicate with a main pipe and enable the direction of fluid in the bypass pipe to be the same as that in the main pipe. Two ends of a pressure-drawing pipe communicate with the bypass pipe. A differential gage is installed in the middle of the pressure-drawing pipe. An inlet temperature gage and an outlet temperature gage are respectively located at a fluid inlet end and a fluid outlet end of the bypass pipe. A laminar flow component is fixed into the bypass pipe through a positioning clip and located between a fluid inlet end and a fluid outlet of the pressure-drawing pipe. The laminar flow component is internally provided with an outer rim micro channel, a clearance micro channel and an inter-pipe micro channel along an axial direction. The differential-pressure linear flowmeter has following beneficial effects: the application scope of a laminar flowmeter is broadened and reliability and Durability are improved; and defects such as large size, great flow resistance and obstruction of the laminar flowmeter are solved.

The invention provides a differential pressure linear flow meter. A main pipe is connected with an external pipeline to be subjected to flow detection; a pipe bundle type rectifier is arranged in a fluid inlet end of the main pipe; a convergence-divergence spraying pipe is fixed in the main pipe at the downstream of the pipe bundle type rectifier; a laminar flow element is arranged in a bypass pipe, and the laminar flow element is located between the two flow guide holes of a pressure guide pipe; a differential pressure meter is mounted in the middle of the pressure guide pipe; an inlet temperature pressure meter and an outlet temperature pressure meter are mounted on the bypass pipe. According to the differential pressure linear flow meter, the laminar flow element is arranged in the parallel bypass pipe and an anti-blocking filter screen is arranged at an inlet of the parallel bypass pipe; and flowing is accelerated through the convergence-divergence spraying pipe, impurities in fluid are brought away forcedly, and the surface of the filter screen is washed. With the adoption of the differential pressure linear flow meter, the technical disadvantages of a laminar-flow flow meter of large size, large flowing resistance and suitableness of measuring small flow are eliminated, and the practical reliability and the durability are improved; and the differential pressure linear flow meter has the characteristics of high measurement precision, very wide measurement range and linear association between flow and differential pressure.

The invention relates to the technical field of LED lamp tubes, in particular to an LED fluorescent lamp. The LED fluorescent lamp comprises a lamp shade, LEDs, reflecting films, a printed circuit board and a lamp holder, wherein a plurality of LEDs are arranged on the printed circuit board. The LED fluorescent lamp is characterized in that high reflecting films are fully distributed on the light-emitting surfaces except LED light-emitting points of the LEDs, or high reflecting materials are sprayed and printed on the surfaces of the LEDs. An insulating layer and a circuit layer in an aluminum substrate are directly attached to the aluminum heat radiating lamp holder to enable the printed circuit board and the lamp holder to from an integrated structure. According to the LED fluorescent lamp, the problems that the light transmittance of a PC (Poly Carbonate) lamp shade of the LED lamp tube is low and the LED lamp tube is non-uniform in brightness and is poor in heat radiation are better solved.

The invention relates to an impulse generator for measuring combustion instability of a solid rocket engine, and belongs to the technical field of solid rocket engines. According to the impulse generator for measuring the combustion instability of the solid rocket engine, a design mode of adjusting pulse size by dose, timing sequence controlled by a propulsive agent and impulse sources integratedwith the propulsive agent to be placed in a T-shaped combustor is adopted, when the impulse generator charges, the impulse sources are integrated with the propulsive agent, the timing sequence of pulsed excitation can be controlled through the dose of the propulsive agent, lighting is carried out directly through the propulsive agent when the excitation needs to be applied, and an extra ignition timing sequence control device is not required. The impulse sources with different amounts and different positions can be added by the impulse generator, the pulsed excitation with different requirements is realized, and simpler, safer and more reliable are achieved. The pulser for measuring the combustion instability of the solid rocket engine is easy to operate, has the low cost, and has a good effect.

The invention discloses a multi-wavelength external cavity laser for a non-fluorescence raman spectrometer. More than two laser diodes with equal central wavelengths in an array are driven to be independently opened and closed through a power supply switching circuit; output light beams are calibrated into parallel collimated laser beams through a collimating laser calibration optical element; a special design is adopted by a grating; different grating periods are set for incident point regions, corresponding to the collimated laser beams, of the grating; the collimated laser beams form zero-order reflected beams and first-order diffracted beams after being diffracted by the grating; the zero-order reflected beams are output in the same direction and have a wavelength difference; the first-order diffracted beams return to the inside of the corresponding laser diodes along the original path to participate in internal mode competition of a resonant cavity; and the zero-order reflected beams are converged into an optical fiber combiner through an optical fiber coupling lens for wavelength output. The wavelength output is switched by the circuit, so that the unreliability and the possible error of conventional mechanical adjustment are eliminated; a tuning structure is relatively simple and stable; high stability of output wavelengths is ensured; the wavelength output repeatability in actual operation is high; and the tuning accuracy is relatively high.

A mixed-voltage input/output buffer having low-voltage design comprises a pre-driver, a tracking unit, a driving unit, and input/output pad, a floating-well unit and a transporting unit. The pre-driver receives first data signal and enable signal and outputs first and second data voltages. The tracking unit provides Gate-Tracking function. The driving unit couples the pre-driver and the tracking unit for production of a first buffer voltage corresponding to the first data voltage. The input/output pad couples the driving unit to output a first buffer voltage and to receive a second data signal. The output unit is used for outputting a second buffer voltage corresponding to the second data signal. The floating-well unit couples to the driving unit and the input/output pad in order to output first buffer voltage and receive second data signal. The floating-well unit is used for preventing leakage current.

A first preferred method for increasing the solderability of a substrate comprising: preparing the substrate for nickel plating by cleaning and removal of surface contaminants; plating a first nickel film of the desired thickness directly onto the substrate; preparing the nickel film comprising thoroughly cleaning the surface; depositing a substantially pure nickel film directly on the first nickel film using a suitable PVD technique; and applying solder to the substantially pure nickel film. Another preferred method for increasing the solderability of a substrate comprising plating a first nickel layer directly onto the substrate by using an electrolytic or electroless nickel plating process; depositing a substantially pure nickel film directly on the first nickel film using physical vapor deposition; and applying solder to the substantially pure nickel film.

The invention discloses a portal crane for assembling a motor with weight being above 100T. The portal crane comprises a gantry, four pulley blocks, four hoisters, a Chinese character zhong shaped bearing beam and a spreader, wherein the gantry is provided with two running mechanisms and two double rails and double channels, and frequency conversion and speed regulation of the motor are synchronously carried out; four fixed pulley blocks of the pulley blocks and the hoisters are fixed on a bearing main girder, and four movable pulley blocks are fixed on the Chinese character zhong shaped bearing beam; the four hoisters are installed at the middle parts of two bottom beams of the gantry, corresponding to the fixed pulley blocks respectively and lift up and down synchronously; the Chinese character zhong shaped bearing beam is customized according to the stator and rotor hoisting gravity and the geometric shape of the motor; and then, the specially-made steel spreader is used for connection so as to reach the hoisting stability and the assembly accuracy. The portal crane solves the problems of the prior art of swinging, waggling, rotation and vibration in the hoisting and transportation process and has the advantages of simple structure and convenience in operation of equipment, low cost, reliability in assembling the motor, no accident due to quality, high efficacy and the like.

The invention discloses a line-type temperature-sensitive fire detector with an electronic switch component, and the detector comprises a line-type temperature sensing element, a converting box connected with one end of the line-type temperature sensing element and used for real-time detecting temperature of the line-type temperature sensing element or the alarm electric parameters (or sampling values) and an electronic switch component connected with the other end of the line-type temperature sensing element. The line-type temperature-sensitive fire detector with the electronic switch component can detect whether open circuit occurs in the line-type temperature sensing element through using the electronic switch component, and determines whether to give out a fire alarm signal through identifying whether the electric parameter (or sampling value) detected by the converting box exceeds the alarm threshold when the electric switch component is open. Such design not only enables detecting and determining status of the line-type temperature sensing element at any time, but also eliminates the problems of low alarm reliability and low sensitivity in case of open circuit.

The invention discloses a linear temperature sensing fire detector with an electronic switch assembly and an alarming method thereof. The linear temperature sensing fire detector and the alarm methodthereof can detect whether a linear temperature sensing element has a broken circuit or not by turning off the electronic switch assembly. Meanwhile, whether a fire alarming signal is sent or not is determined according to a condition whether an electrical parameter (or a sampling value) detected by a switching box exceeds an alarming threshold value or not when the electronic switch assembly is in an on state, thus the state of the linear temperature sensing element can be detected and judged at any time, and the problem of lower alarming reliability and sensitivity under the condition of anopen circuit can also be eliminated.

A power generating bearing assembly comprising a power generating subassembly integrated into a bearing. The power generating subassembly utilizes the relative motion between a bearing inner ring and a bearing outer ring of the bearing to generate electrical power. A sealing system is attached to one of the bearings. The power generating subassembly includes an electrical generator in operational engagement with a magnetically polarized material. The electrical generator is attached to the non-sealing carrying bearing. The magnetically polarized material can be attached directly to the sealing system or carried by a magnetically polarized material mount ring. The relative motion between the rings engages the electrical generator and the magnetically polarized material causing a generator core of the electrical generator to create an electrical current.

The invention provides an LED mounting base, an adjusting mechanism containing the LED mounting base and an inner red dot sighting telescope containing the adjusting mechanism. The LED mounting base comprises a sliding block base and a base with an LED chip on the center of the front end face, a sliding groove parallel to the length direction of the base is formed in the front end face of the sliding block base, a blind end is arranged at one end of the sliding groove, the other end of the sliding groove is opened, the base is arranged behind the sliding groove, the front end face of the baseand the front end face of the sliding block base are flush, due to modular design of the LED mounting base, compactness is achieved, and gap effects are reduced. Closing force generated during adjusting in the up and down and left and right two-dimensional direction is decomposed into the single direction. The phenomena that the closing force formed by spring elastic force in the different directions increases friction force, due to tolerance transmission between parts, a part gap is caused, the precision of the adjusting mechanism is poor, and interference is caused are avoided. Deflection and clamping caused by adjusting in two directions do not exist, machining difficulty of parts can be reduced, and the production efficiency is improved.

An embodiment of the invention provides a circuit unit packaging structure. The circuit unit packaging structure comprises a circuit substrate, an insulator and an electromagnetic shielding layer, wherein circuit units are arranged on the circuit substrate; each circuit unit comprises a silicon dioxide layer and an electronic device arranged on the silicon dioxide layer; the insulators are arranged around the circuit units; the electromagnetic shielding layer is arranged on the circuit units and the insulators in a covering mode. The circuit unit packaging structure has a good electromagnetic shielding effect and is efficient in heat dissipation.

The invention discloses a slave plate structure for a railway good train coupler buffering device, which comprises a slave plate body and an abrasion plate, wherein the slave plate body is arranged in a coupler tail frame of the coupler buffering device; and the abrasion plate is arranged on one side of the slave plate body, and a main abrasion surface of the abrasion plate is contacted with the coupler tail frame. Because the abrasion coefficient of the abrasion plate is lower, abrasion is only generated on the abrasion plate, and the coupler tail frame has no abrasion basically. Therefore, the condition that the coupler tail frame needs to be welded due to transfinite abrasion cannot occur, and the problem of cracks due to improper welding of the couple tail frame is solved. When the abrasion of the abrasion plate exceeds the limit, only the abrasion plate needs to be replaced, and both the slave plate body and the coupler tail frame can be continuously used so as to save overhaul cost.

The invention provides a high-voltage electro-static discharge (ESD) protection circuit. The high-voltage ESD protection circuit comprises a bias circuit, an ESD trigger circuit and an ESD release circuit which are arranged between a high-voltage power line and a ground line and are sequentially coupled, wherein a plurality of voltage division nodes are arranged on the bias circuit, the ESD trigger circuit mainly comprises a RC delay network in which at least one resistor and a plurality of capacitors are connected, each capacitor is correspondingly coupled to the voltage division node of the bias circuit, and the ESD release circuit is mainly formed by coupling a grid to the RC delay network. The high-voltage ESD protection circuit is simple in structure and high in reliability and can be compatible with a BCD process.