108results about How to "Guaranteed constancy" patented technology

An ion mobility spectrometer is disclosed wherein the ionization element is a corona discharge source (300) consisting of a first chamber (308) provided with an inlet (309) for a gas to be analyzed and with at least one first opening (311) for communication between the internal space of the first chamber and the reaction zone of the spectrometer; a second chamber (303), contained in the first chamber, provided with an inlet (306) for an ultra-pu re gas or a mixture of ultra-pure gases, and with at least one second communication opening (310, 310') between the first and the second chamber; a pair of electrodes (304, 302'), at least one of which (304) is needle-shaped , arranged in the second chamber, with the pair of electrodes and the second opening arranged in such geometrical relationships that there is no optical path between the zone of the corona discharge and the ion detector of the IMS instrument. The instrument of the invention allows to reproduce the results of a spectrometer equipped with a 63Ni ionization source, while avoiding the problems connected to the transportation and use of radioactive material.

The invention discloses an automobile electromechanical brake, which comprises a front floating caliper and a floating caliper block. The front floating caliper is connected with a front friction disc, the floating caliper block is connected with a back friction disc through a nut-piston, a brake disc is arranged between the front friction disc and the back friction disc, and the nut-piston is connected with a motor through a boosting linkage and is connected with a gap regulating mechanism. The motor pushes the back friction disc and the front friction disc to attach onto the brake disc by the boosting linkage, thereby realizing braking. The automobile electromechanical brake has a gap regulating function, and gaps among the brake disc and the friction discs can be regulated freely, so that constancy of the brake response speed of automobiles is guaranteed and braking performance is guaranteed further. The automobile electromechanical brake is fine in braking performance, simple in structure, convenient in installation, easy to maintain and low in energy consumption.

The invention discloses a self-force-increasing type electronic-mechanic brake for an automobile. An upper friction plate and a lower friction plate are arranged at the two sides of a brake disc. The upper friction plate is fixedly mounted on a brake caliper body. The brake caliper body is mounted on a brake caliper bracket through guiding rods and can move axially on the guiding rods. A dust cover is arranged between the brake caliper body and each guiding rod. A first motor is fixed to a lower wedge block through first screws. The first motor is connected with a first threaded rod through a first coupling. The first threaded rod is in transmission connection with a push rod through a thread. In the braking process, the first motor drives the first threaded rod to rotate, the first threaded rod pushes the push rod to move in the horizontal direction, and furthermore, the push rod pushes an upper wedge block to move in the horizontal direction and the vertical direction; normal brake clearances are eliminated; and the lower friction plate is in contact with the brake disc, and braking is achieved. The self-force-increasing type electronic-mechanic brake for the automobile has the self-force-increasing function; the input torque of each motor can be greatly reduced; and meanwhile, the self-force-increasing type electronic-mechanic brake has the function that the clearance can be adjusted automatically, and wear of the friction plates is compensated.

The invention discloses a service quality adjustment method and a device for real-time services. The method includes the following steps: monitoring the quality of transferred media stream; driving at least one device in the transmission direction to reduce the transmission bandwidth of media stream if the media stream quality is lower than the reset QoS requirements; and / or driving at least one device in the transmission direction to increase the transmission bandwidth of media stream if the media stream quality is higher than the reset QoS requirements. The method guarantees the dynamic adjustment of the QoS and divides the clients into different levels; if the quality of the highest-level client cannot be guaranteed, the lowest-level client will be closed, thus ensuring that the clients of different levels can get corresponding service quality.

The invention discloses a polysilicon solar battery slice etching device which comprises a polysilicon solar battery slice etching part, a polysilicon solar battery slice acid-cleaning part and a microcomputer control system, wherein the polysilicon solar battery slice etching part and the polysilicon solar battery slice acid-cleaning part are both connected to the microcomputer control system, and the microcomputer control system carries out independent control or coordinated control on the polysilicon solar battery slice etching part and the polysilicon solar battery slice acid-cleaning part. The invention can reduce the secondary pollution, improves the working environment and the production efficiency, breaks down the monopoly of foreign technologies and provides conditions for the application of domestic equipment.

The invention relates to a testing device and a testing method for a forming limit diagram under a high-temperature constant-strain rate condition. The device comprises a sample deformation pressure device, a real-time strain measurement device and a controller; based on a testing method for the forming limit diagram under the high-temperature constant-strain rate condition built by the testing device, the constancy of the strain rate of a sample in a central point is realized under the condition of constant forming temperature, and a forming limit diagram under the obtained slab isothermal condition contains a forming limit curve under a constant-strain rate condition in a certain strain rate range. The testing device and the testing method have the advantages of high control accuracy and accuracy in measurement, and are significant in theoretical research and practical application of light alloys and high-strength steel warm-hot forming.

The invention provides a 3D printer provided with a gradient powder feeding system. The gradient powder feeding system is composed of two or more storage devices, a powder distributor and an accuratepowder feeder, wherein one or more partition plates are arranged in the powder distributor. According to the 3D printer provided with the gradient powder feeding system, it can be ensured that two ormore types of powder can always be quantitatively and accurately fed according to a required volume ratio, and it can also be ensured that the gradient change ratio of powder components of each powderspreading layer in a direction perpendicular to the powder spreading direction is always constant; materials with material components continuously changing can be rapidly obtained through subsequentprecise regional laser sintering, data about the tissue, physical performance and mechanical performance of materials with different components can be rapidly obtained, functional gradient material test samples or parts can be rapidly obtained, and a profound influence on research and development of functional materials and new materials is achieved.

The invention provides a fuzzy theory based low-light-level imaging method. An image color space is converted from an RGB space to an HSV space, color constancy is maintained, and a nonlinear function is used to improve the brightness of a low-light-level image; the image is transformed from a space domain into a fuzzy domain by utilizing a membership function, the image is enhanced in a fuzzy characteristic plane, and the contrast of the image is improved; and a double-side filter of the highest detail maintenance degree is used to carry out final filtering and denoising on the image to be processed, and a final low-light-level image is output. According to the method, the contract of the image is enhanced, more detail information of scenes in the image is reserved, and the low-light-level image enhancing method is highly efficient.

The invention relates to the field of compounding, and aims at providing a compound machine and a compound method. The compound machine comprises a machine top, a transitional guide roller set, a coating assembly, a compound assembly, a water-cooling assembly, a preheat roll assembly, a tension detection roller set, an electric control cabinet and first and second engine bases respectively arranged at two ends of the machine top, wherein the first engine base is provided with a coating mechanism and a first base material unreeling assembly, the second engine base is provided with a second base material unreeling assembly and a rolling-up assembly, the compound assembly is arranged on the first engine base; the preheat roll assembly comprises a first preheat roller and a second preheat roller used for preheating a first base material and a second base material respectively, and the first preheat roller is arranged on the path for transferring the first base material between the first base material unreeling assembly and the coating assembly. According to the technical scheme, by adjusting the arrangement of key assemblies, the reliability of the compound product is improved, and the production efficiency is improved, so that the compounding machine is suitable for the compounding requirement of modern base materials with flexible package.

The invention provides a function loading device suitable for an analog simulation experiment of a mine laneway. The function loading device comprises a rack, at least one oil cylinder, a counter-force frame and a plurality of downwards-pressing mechanisms. The oil cylinders are arranged on the rack and connected with the counter-force frame in a drive mode. The downwards-pressing mechanisms comprise moving rods, deviation prevention sleeves and pressing plates. The upper portions of the moving rods are movably arranged in the counter-force frame. The deviation prevention sleeves are arranged above the pressing plates and connected to the peripheries of the lower portions of the moving rods in a sleeving mode. The moving rods are evenly distributed in the horizontal direction. The every two adjacent pressing plates are movably connected. By means of the function loading device, the evolutionary process and the change law of the problems of the deformation and destroy of surrounding rock of the deep mine laneway under the actual mine ground pressure action can be simulated and tested more truly.

The invention discloses an expansion joint for a conductive rail. The expansion joint for the conductive rail comprises a left conductive rail, a middle rail and a right conductive rail, wherein the right end face of the left conductive rail, the two end faces of the middle rail and the left end face of the right conductive rail are mutually-parallel inclined planes; the expansion joint further comprises a conductive plate and wires; the conductive plate is provided with a boss part fixedly connected to the bottom surface of the middle rail; the left end and the right end of the conductive plate are suspended; the wires consist of a left wire and a right wire; one end of the left wire is connected to the bottom surface of the left conductive rail, and the other end is connected to the suspended left end of the conductive plate; one end of the right wire is connected to the bottom of the right conductive rail, and the other end is connected to the suspended right end of the conductive plate; the wires keep in a relax state after being connected; and the expansion joint further comprises a copper-aluminum transition plate. The expansion joint provided by the invention has a simple structure, is excellent in pickproof and shock-resistant performance, can effectively ensure requirements of follow current and current carrying on the expansion joint, and can ensure constant and reliable current capacity.

The invention relates to an automatic wire arrangement and balance device of a multi-wire cutting machine. The automatic wire arrangement and balance device is characterized by comprising a conducting wire pulley, a tension control pulley, a swinging conducting wire pulley and a wire coil used for coiling a cutting steel wire; the cutting steel wire is wound on the wire coil sequentially by the conducting wire pulley, the tension control pulley and the swinging conducting wire pulley; and the cutting steel wire is wound on the wire coil in the tangential direction of the peripheral surface of the wire coil. The swinging conducting wire pulley is provided with a balance hammer. The automatic wire arrangement and balance device of the multi-wire cutting machine has the beneficial effects that wires can be arranged automatically, the tension can be balanced automatically, the steel wire can be guaranteed to keep the tangential and vertical winding direction when wound on the wire coil, the uniformity of the arranged wires and the force bearing constancy are guaranteed, the probability of wire breaking is reduced, the phenomenon of fretsaw on a product is eliminated, the cutting effect is guaranteed, and the quality of the cut product is also greatly improved.

The invention discloses a vehicle electronic mechanical brake with a gap regulating function, which comprises a floating clamp body. The floating clamp body is provided with friction plates; an upper friction plate is fixedly arranged on the floating clamp body; a lower friction plate is connected with a force amplifier; a brake disc is arranged between the two friction plates; the force amplifier is connected with a motor; and the motor is used for pushing the friction plates by the force amplifier to ensure the friction plates adjacent to the brake disc so as to realize brake. According to the invention, under the action of a one-way clutch, a worm connected with a gear is driven by the gear to rotate and a worm gear is driven to rotate, so that a screw rotates relative to a nut fixed on the floating clamp body, and thus, the effect of regulating gaps is achieved and the gaps between the brake disc and the friction plates are freely regulated. Meanwhile, the self-locking property ofthe worm gear and the worm can also take a one-way moving effect. The vehicle electronic mechanical brake has both a force amplification effect and a gas regulating function, has simple structure, isconvenient to install and is easy to maintain.

This invention discloses a kind of method for accessing buffer store. Through arranging n buffer cells, write clock identification signal which cycle is n times write clock cycle and read clock identification signal which cycle is n times read clock cycle on the first-in first-out buffer, all the buffer cells are undertaken write operation successively during write clock signal cycle. When writing the first buffer cell, the write clock signal is high level, the others are low level; the write clock identification signals are sampled during the rising edge of each write clock cycle, which is in the write clock identification signal cycle. The rising edge position of the write clock identification signal is decided according to the sampled consequence; the buffer cells are began to undertaken read operation from at least the second read clock cycle after the write clock cycle corresponded to the rising edge of write clock identification signal. This method can ensure that the delay error does not exceed clock jittering range. The designing complexity of logical circuit is decreased.

The invention discloses a scanning dose modulation method. The scanning dose modulation method comprises the steps of obtaining attenuation information of a first XY scanning section under different projection positions of a first Z position in a planned scanning sequence according to scanned sequential data of a patient and modulating the scanning dose under a corresponding projection position according to the attenuation information, wherein the first Z position is a position in the Z direction, the Z direction is the direction from the head to the feet of a patient or the direction from the feet to the head of the patient, and the first XY scanning section is a patient section which is perpendicular to the Z direction at the first Z position. The invention also discloses a scanning dose modulation device.

The invention discloses a rapid repairing device for asphalt pavement cracks. The repairing device comprises a repairing handle, an annular joint filling base device is mounted on the repairing handle, and a controller is mounted at one end above the repairing handle. A repairing material extrusion device is mounted in the center above the repairing handle, and a heat insulation and heat preservation heating device is arranged at the lower portion in the repairing handle. A driving motor drives an extrusion screw to rotate, so that an extrusion baffle extrudes a storage barrel, and the repairing material flows in a heating spiral coil at a constant speed. If the repairing material needs to be heated, a heat-conducting medium can be heated through an electric heating pipe, so that the repairing material is heated. The temperature of the repairing material can be effectively ensured to be constant through the uniform-speed movement of the repairing material and the heat transfer of the heat-conducting medium, so that the temperature of the repairing material can be accurately controlled, the effect of the repairing material for repairing the pavement cracks is better, and the repairing device can be suitable for various repairing materials.

The invention discloses a novel band limiting-adjustable ultra-wideband bandpass filter. The filter uses the inherent zero point of a multimode resonator to form band limiting in the ultra-wideband bandpass filter, a step impedance resonant structure and a branch-loaded resonant structure are combined, a novel T-type multimode resonator is formed, a capacitor is parallelly connected onto impedanceconversion of the step impedance resonant structure, the number of resonant modes is increased, a varactor is loaded to the terminal of the resonator, and the varactor is used to adjust the zero point position in the band to form adjustable band limiting characteristics. The novel band limiting-adjustable ultra-wideband bandpass filter mainly comprises an upper-layer microstrip structure, a middle-layer dielectric plate and lower-layer grounding metal, has the characteristics of simple structure, miniaturization, good features and the like, can overcome the shortcoming of insufficient filterselectivity based on the multimode resonator design, realizes good selectivity and harmonic suppression effects, and is easy to realize circuit integration and system packaging.

The invention discloses a method for capturing tumour cells by utilizing a microflow chip. The method for capturing the tumour cells by utilizing the microflow chip comprises the following steps of: preparing cell sap, namely preparing a sample containing tumour cells into a phosphate buffer solution; preflushing, namely preflushing an injection pipeline by adopting a phosphate solution containing no tumour cell; capturing the tumour cells, namely causing the prepared cell sap to flow to the microflow chip through the injection pipeline at a flow rate of 90-110 micron litre per hour, and capturing the tumour cells into the microflow chip. According to the method for capturing the tumour cells by utilizing the microflow chip, the tumour cells can be effectively captured and sorted, the captured tumour cells have good activity, and the tumour cells can be directly analyzed after being captured.

The invention discloses an explosion-proof high and low temperature damp and heat test device, relating to the technical field of high concentration combustible gas sensor online climate testing. Thedevice mainly comprises four parts: an explosion-proof box body, an indirect heating refrigerating system, an air exchange system and a control circuit, wherein the explosion-proof box body is an inside-outside dual-layer shell, a box door is provided with an observation window and a security lock, the observation window is sealed for many layers, an LED lamp is installed in the box body, an explosion-proof methane gas sensor and a temperature sensor are installed in the LED lamp, the indirect heating refrigerating system comprises an evaporator, a humidifying water tray and a refrigerating unit, a heating unit, a humidifying unit, and a silicon oil tank, the air exchange system comprises an air supply system supplying air for the interior of the explosion-proof box body and an exhaust fanat the top of the box body, and the control circuit is arranged at the back of the box body and is a circuit safe in nature. The explosion-proof high and low temperature damp and heat test device protects operators in test, makes online environment measurement test more reliable, and controls methane gas concentration so as not to cause explosion.

The invention belongs to the weighing and packing technical field and relates to a sensor weighing module for an automated production line. The sensor weighing module of the invention comprises a base, a beam type sensor and a bearing plate; the module also comprises supporting columns for supporting the bearing plate, wherein at least two supporting columns which are symmetrically distributed at two ends of the bearing plate along the central line of the bearing plate exist; one of opposite surfaces of each supporting column and the bearing plate is provided with a spherical matching part, and the other surface of the opposite surfaces is provided with a hemisphere-shaped spherical groove which is shaped to match a position which is matched with the hemisphere-shaped spherical groove; and along a vertical direction, a distance left between the spherical groove and the spherical matching part is equal to the set pressed sinking height of the bearing plate. The sensor weighing module of the invention can satisfy weighing accuracy requirements. The sensor weighing module has the advantages of work flexibility, high fault tolerance rate, low installation precision requirement, reliable operation and further prolonged service life.

The invention relates to a ceramic dielectric filter and a method for conducting and fixing the ceramic dielectric filter and an antenna coupling plate. The filter adopts a spring pin assembly, wherein the spring pin assembly comprises a pin tube, a spring and a contact pin, the spring and the contact pin are arranged in the pin tube, the spring can buffer stress to prevent the contact pin from being damaged, and the stability of signal transmission between the contact pin and the antenna coupling can also be ensured. The ceramic dielectric filter is assembled and fixed by means of crimping ashielding fixing cover, so that the defects of easy damage or unstable contact of the ceramic dielectric filter in the prior art due to the adoption of electrode or contact pin welding for signal transmission and inconvenient disassembly caused by welding and fixing the filter are overcome, the signal transmission performance of the ceramic dielectric filter is improved, the signal transmission isstable, and the disassembly is convenient.

The invention discloses a high-protein dog snack and cat snack and a preparation method thereof, and relates to the technical field of pet foods. The key point of the technical scheme is that the high-protein dog snack and cat snack is prepared from the following raw materials in parts by weight: vegetable protein artificial meat, laver, sunflower seed oil, yolk, a phagostimulant, rosemary oil, salt and complex vitamins, wherein the vegetable protein artificial meat consists of dried pleurotus eryngii, vegetable protein powder and soybean drawing protein in the weight ratio of the dried pleurotus eryngii to the vegetable protein powder to the soybean drawing protein being 1: (4-6): (1-2). The high-protein dog snack and cat snack disclosed by the invention has the advantages of being high in protein content, comprehensive in nutrients, good in palatability, low in cost and environmentally-friendly, and can also present the characteristics of flavor, mouth feel, texture and the like similar to corresponding animal meat.

The invention provides a vacuum gas collection system for core gas of a natural gas hydrate drilling field. The vacuum gas collection system comprises a vacuum pumping unit (A), a gas collector (B) and an extraction unit (C), wherein the vacuum pumping unit (A) comprises a vacuum manufacturing glass tube (16) and a vacuum pump (19); the gas collector (B) comprises a tank body (1) and a tank body cover (4) which are detachable and are in seal connection, and the tank body cover (4) is provided with a main hole and a subsidiary hole which is provided with a subsidiary hole tube (5); and the main hole of the tank cover (4) is provided with the extraction unit (C), and is communicated with an extraction chamber of the extraction unit (C). The vacuum gas collection system provided by the invention utilizes vacuum negative pressure in the gas collector and the gas collection and extraction chamber with a specific structure to extract release gas from a core sample, and thus the collecting efficiency of gas is improved; multiple sealing structures are utilized to eliminate air influence, and thus the quality of collected gas samples is guaranteed; and a water bath thermostat is utilized to deaerate, so that the influence of environment temperature change is removed, and the comparability of a core collecting capacity is improved.

The invention relates to a system and a method for accurately controlling gas pressure of PVT method crystal growth, belongs to the technical field of PVT method crystal growth, aims to solve the problem that gas pressure cannot be accurately controlled in crystal growth through an existing PVT method, and provides a system for accurately controlling the gas pressure of PVT method crystal growth.The system comprises a nitrogen gas source branch, an argon gas source branch and an exhaust branch which are communicated with a crystal growth furnace, wherein a precise proportional valve, a fifthelectric stop valve and a vacuum pump are arranged on the exhaust branch, a gas pressure sensor is further arranged on the crystal growth furnace and connected with a monitoring host, and the monitoring host is connected with the precise proportional valve, all the electric stop valves, a gas flow meter and a proportional valve. According to the invention, under the condition of continuous gas supply, gas pressure in a furnace and gas components in the furnace are kept constant, so that the stability of crystal growth is guaranteed.

The invention relates to a spring needle module, a filter and a conducting and fixing method of the filter and an antenna coupling plate. The spring needle module comprises a needle tube, a medium, asilica gel spring, a lantern reed and a contact needle; a sufficient safety gap is reserved between the needle tube and the contact pin to prevent mutual conduction of the needle tube and the contactpin, the needle tube and the contact pin are connected by the lantern reed when a signal or current is conducted, the silica gel spring is further adopted, the silica gel has physiological inertia andbetter elasticity and extensibility, is not conducted to current and radio frequency signals thereby better ensuring the stability of the signal or a resistance value, and the problem that the filteris inconvenient to disassemble and assemble under the condition of poor contact or damage is solved; and the new spring needle module can effectively improve the transmission performance between thefilter and the antenna , thereby ensuring the stability of antenna signal transmission.

The invention relates to a device for filling oil in an optical fiber secondary coating tube. The device comprises a support bottom plate parallel to the horizontal plane, a machine head fixing plate fixedly mounted at one end of the support bottom plate and used for connecting a plastic squeezing machine head, an ointment pin fixing frame which is mounted on the support bottom plate in a horizontally sliding way and used for fixing an ointment pin, and an optical fiber gathering plate mounted on the support bottom plate and arranged at the rear end of the fixing frame. The invention ensures the constancy of the position of the ointment pin entering the plastic squeezing machine head and ensures the quality of the finished fiber by fixing the ointment pin in the horizontal direction all the time. Meanwhile, the ointment pin is arranged on the fixing frame which can slide, and the ointment pin can slide to the rear end of the installing bottom plate when the oil filling is not necessary, so that the work is not influenced and the use of the device is flexible.