170results about How to "Quality change" patented technology

The steel structure beam-column node member is composed of steel upright column and H-beam. The H-beam includes transverse beam and longitudinal beam, on the side surface of steel upright column a screw bolt hole is cut, the upper and lower two sides of said screw bolt hole are quipped with spacing bracket respectively, on the bracket a screw holt hole is cut, on the upper and lower flanges of transverse beam and longitudinal beam and web plate of transverse beam the screw holes are cut, and on the end portion of the transverse beam an end plate is welded, on the end plate a screw hole is cut, on the end portion of the longitudinal beam an ''U'' - shaped clamping hoop plate is welded, and on the clamping hoop plate a screw bolt hole also is cut.

The invention provides a six-beam acceleration transducer and a preparation method thereof. The acceleration transducer comprises a mass block which is connected on a left-right bonding block by an elastic beam and provided with moving electrodes, and an upper fixed electrode and a lower fixed electrode which are connected with an up-down bonding block and positioned on the mass block; the elastic beam comprises a conduplicate beam and an anti-interference beam; the upper fixed electrode is independent from the lower fixed electrode, the moving electrodes are connected together by the mass block, a pair of differential capacitors are formed by the upper fixed electrode and the lower fixed electrode and the moving electrodes; the values of the two differential capacitors are inversely proportional to the change trend of an applied acceleration in operation; and the left-right bonding block and the up-down bonding block connected by the fixed electrodes are fixed on a glass substrate by electrostatic bonding. The acceleration transducer has the advantages of small size, great static capacitance, strong anti-interference capacity, no horizontal (non-sensitive) interference, high sensitivity, simple structure, flexible design, easy machining and the like.

A method for preparing a surface of a substrate such as a polymer, glass, and the like to receive one or more images applied thereto. The method may include selecting a substrate having a surface, abrading a portion of the surface, and printing an image comprising a graphic, text, or some combination thereof on the abraded surface. The substrate may be masked to protect selected areas from abrasion. Additionally, if necessary, the substrate may be cleaned after the abrasion to improve the adherence of the image to the abraded surface.

The invention discloses a stacked type intelligent air treatment system and belongs to the technical field of gas purification treatment systems. The stacked type intelligent air treatment system comprises a base and an outer shell. The bottom of the outer shell is provided with an air inlet port layer, and the top of the outer shell is provided with an air outlet port layer. A gas monitoring layer, an electrostatic precipitation layer, an activated carbon layer, a fan layer, a display control layer, a heat conductive plate layer, a light-catalyzed reaction layer and an odor source generation layer are sequentially arranged inside the outer shell in a stacked mode from bottom to top and are connected through heat conductive lines or power lines or data lines. Heat conductive plates of the heat conductive plate layer are made of graphite heat conduction materials, and the heat conductive plate layer is connected with a fan rotating shaft, the electrostatic precipitation layer, an LED catalyzed light source and a display control driver. The gas monitoring layer comprises a temperature and humidity sensor and a formaldehyde and TVOC sensor which are fixed through a support. By the adoption of the technology, the stacked type intelligent air treatment system intelligently integrates various devices and all functional components are relatively independent, so the stacked type intelligent air treatment system is convenient to disassemble and assemble, simple and attractive in appearance and capable of more quickly and effectively disinfecting, purifying and treating indoor air.

The invention discloses a piezoelectric power generation device. The piezoelectric power generation device comprises an outer frame, a main cantilever beam, a mass-adjustable main mass block, two second-level cantilever beams and two mass-adjustable second-level mass blocks; the main cantilever beam, the main mass block, the two second-level cantilever beams and the two mass-adjustable second-level mass blocks are respectively located at the inner side of the outer frame; one end of the main cantilever beam is connected with the outer frame; the other end of the main cantilever beam is connected with the main mass block; the main mass block is connected with one end of each of the second-level cantilever beams; the other end of each of the second-level cantilever beams is connected with one second-level mass block; and the main cantilever beam and the second-level cantilever beams are respectively a metal frame of which the upper surface and the lower surface are both provided with a piezoelectric unit. According to the piezoelectric power generation device of the invention, one main cantilever beam and two second-level cantilever beams are adopted to form a three-degrees-of-freedom piezoelectric beam structure, so that the work bandwidth of the piezoelectric generator can be broadened through the plurality of cantilever beams with different resonant frequencies; and the mass of the main mass block and the second-level mass blocks can be decreased or increased according to actual situations, and therefore, resonant frequencies can be adjusted flexibly. Thus, the piezoelectric power generation device of the invention can be applied to environments with different resonant frequencies.

The invention discloses an assembled two-tower cable-stayed bridge damage identification test model system, which consists of a two-tower cable-stayed bridge test model, a moving load system and a data acquiring system, wherein the two-tower cable-stayed bridge test model consists of a girder, cable bent towers, stay cables, a support seat and bases, and the girder is formed by splicing sections with different lengths; the moving load system is a vehicle model controlled by a wireless remote control device, and weights are fixed on the moving load system; and the data acquiring system comprises a cable force testing system, a displacement testing system and an acceleration testing system. According to the system disclosed by the invention, the model experiments of dynamic and static performances of a cable-stayed bridge structure can be completed, and at the same time various damage states of the cable-stayed bridge structure under an actual situation can be conveniently simulated; the arrangement of counter weights can be adjusted according to the test requirement; an unsmooth driving situation of a vehicle on a bridge surface can be simulated; the loading of moving load is realized; and the data acquiring system is comprehensive, simple, convenient, economical, real-time and reliable in precision.

The invention relates to a rotating shaft position-limiting device with a sensor and a position-limiting method thereof. The rotating shaft position-limiting device with the sensor comprises a position-limiting flag post, a position-limiting sensor and a logic circuit connected with the position-limiting sensor; the position-limiting flag post is tightly fixed at a rotating shaft; the position-limiting sensor is fixed around the rotating shaft, and the position-limiting flag post can sufficiently shade the sensing point of the position-limiting sensor when rotating to the corresponding position of the position-limiting sensor; and the logic circuit is connected with a motion controller controlling the rotating shaft. The invention has compact design of rotating parts and light weight, canbe easily carried on other motion parts, and has low cost.

The invention provides a generation method for a self-adaptive sliding mode controller of an uncertainty plane inverted pendulum system. The generation method comprises the steps that step 1, the sliding mode control law is generated for a linear time-invariant system with uncertainty items; and step 2, fuzzy system h<^> approximation switching control epsilonsgn(s) is adopted for the uncertainty items. The beneficial effects of the generation method are listed as follows: the self-adaptive fuzzy sliding mode controller is designed for the inverted pendulum system with the uncertainty items, the uncertainty inverted pendulum system is theoretically proved to be stable, and the designed control system is verified to be great in rapidity and robustness through simulation experiment.

The present invention relates to a scheme for improving efficiency of a flapping-wing aircraft, which acquires progressing force through swing in a fluid medium (air or water). In the field, bionic flapping wing aircraft is provided, but fails to catch the essence of energy efficiency of swing flying of insects, fish and birds. Therefore, the energy utilization efficiency of the flapping-wing aircraft in the prior art is not higher than that of fixed wing airplane. In order to greatly improve the energy efficiency of high flapping-wing aircrafts, the invention provides a scheme for high efficiency wing-flapping aircraft. The flapping-wing aircraft provided by the invention is characterized in that wing roots are connected to other parts of the aircraft by springs, so that the flapping wings have an intrinsic flutter frequency, and the system only needs to supplement energy dissipated by the flapping wings for power consumption in each flutter cycle to maintain flutter of wings. Thus, the scheme greatly reduces energy consumption and improves the energy efficiency of flapping-wing navigation. According to the invention, by means of flapping-wing aircraft, human being can realize high efficiency navigation like insects and birds.

The present invention relates to a projection system. The projection system comprises a light source, a color wheel and a spatial light modulator. The light source is configured to emit light of the light source; the color wheel is located on a light path where the light of the light source is located, the color wheel comprises at least two sectional areas which receive the light of the light source and correspondingly emit at least light with two colors, the period of light spots formed by radiating the light of the light source on the color wheel from starting spanning of the two sectional areas to finishing spanning of the two sectional areas is one spoke period, and areas radiated by the light spots in one spoke period form one spoke area; areas except the spoke area included in one sectional area form one non-spoke area, and the period of experience of the light spots radiated on one non-spoke area is one non-spoke period; and the spatial light modulator is configured to modulatelight with at least two colors to generate projection light required by a projection image, and the spatial light modulator is closed in a spoke period corresponding to the spoke area.

The invention relates to a bandwidth adjustable n*3 lattice type vibration energy collector based on a modal separation technology, and belongs to environment energy collection devices in the technical field of micro energy. The bandwidth adjustable n*3 lattice type vibration energy collector comprises a flexible frame main beam structure, piezoelectric cantilever beams and mass blocks, the flexible frame main beam structure is rectangular, n-1 hollow rectangular holes of the same size and interval are formed successively in the rectangle along the axial direction, n rows of flexible main beams are formed, and n >=2; the piezoelectric cantilever beams of the same quantity are pasted and fixed to each flexible main beam; and the mass blocks are adhered to the hanging ends of all the piezoelectric cantilever beams respectively. According to the collector, the row number n of the piezoelectric cantilever beams is increased or decreased and the sizes of the piezoelectric cantilever beams and the mass blocks are changed, so that the effective bandwidth of a system is adjusted timely, the output continuity and stability of the energy collector are improved, and the environment adaptability of the vibration energy collector is enhanced.

The invention discloses a device and control method for improving balance and walking speed of a biped robot. Most biped robots are controlled by using a ZMP(such as ASIMO in Japan). However, the biped robots controlled by the ZMP have the disadvantages that soles are large in size and the walking speed is slow. The device and control method for improving the balance and the walking speed of the biped robot fully utilizes the advantages of the ZMP and overcomes the disadvantages as much as possible. The device for improving the balance and the walking speed of the biped robot mainly comprisesa mechanical structure and a controller. For the existing biped robots, it is only necessary to replace original feet with the device for improving the balance and the walking speed of the biped robot, and it is not necessary to modify remaining structural parts, so higher practicability is achieved in real life. The mechanical structure of the soles dynamically adjusts the center of gravity of the biped robot under the action of the controller, so that the biped robot has good balance in motion and the motion speed of the biped robot is obviously improved. The biped robot adopting the deviceand control method for improving the balance and the walking speed of the biped robot can be widely applied in the fields of industry, rescue, family, medical care and like.

The invention relates to an Internet-of-Things based roadblock with an air purification function. The Internet-of-Things based roadblock comprises a main body, a base, a purification mechanism and a detection mechanism. The purification mechanism comprises a ventilating component and a treating component. The treating component comprises a stirring unit, a clutch unit and a cleaning unit. The detection mechanism comprises a floating block, a first fixed pulley, a second fixed pulley, a connection line, a scale bar, a spring and an observation window. The Internet-of-Things based roadblock hasthe advantages that the air around roads can be purified by the purification mechanism, the purification effect is stable, air purity is improved, and dust is prevented from being inhaled into human bodies to influence physical health of constructors and pedestrians; water volume can be adjusted by the detection mechanism, the mass of the main body is changed, the frictional force is increased when the main body contacts with the ground, and accordingly, the roadblock is not easy to deviate and topple over; practicability and functionality of the roadblock are improved greatly.

In a digital data processing apparatus, a storage section stores data representative of digital contents of audio or video. A reproduction section processes the data to reproduce the digital contents. A reading section reads out the data from the storage section and sends the read data to the reproduction section. A generating section alters the read data to generate latent deterioration in the digital contents. A control section rewrites the data stored in the storage section by the altered data, whereby repetition of reading and rewriting of the data accumulates latent deterioration to finally cause an evident deterioration of the digital contents. Optionally, a recording section records the data read out from the storage section to make a copy of the digital contents. In such a case, the control section may operate when the copy is made by the recording section for clearing the data from the storage section to erase an original of the digital contents.

The invention discloses a multi-parameter coupled liquid-carried ship collision test device, which comprises a water pool, a data acquisition system, and a colliding ship, a collided ship, a collidingship traction and guiding device and a collided ship traction and guiding device, which are arranged on the water pool. The data acquisition system comprises a CPU, a wireless communication module, astorage device, a plurality of wireless pressure sensors and a plurality of wireless displacement sensors. The colliding ship is connected with the colliding ship traction and guiding device; the collided ship is connected with the collided ship traction and guiding device; the CPU is electrically connected with the wireless communication module and the storage device; and the CPU is electricallyconnected with each wireless pressure sensor and each wireless displacement sensor through the wireless communication module. The device and method carry out multi-parameter coupled liquid-carried ship collision test by changing relevant parameters of the colliding ship, relevant parameters of the collided ship and water volume in the water pool to obtain influence of different parameters on testresults.

Method of making an open ended hollow concrete element (240) comprising the steps of arranging a mould (220) about an essentially horizontal roller shaft (210), the mould comprising a sleeve-shaped mould wall (230) defining the outer peripheral shape of the concrete element (240) and a first end rim (250) and a second end rim (260) each with an inner periphery (251, 261) smaller than the inner periphery of the mould wall (230) at respective end and defining the end surfaces of the concrete element. The mould (220) is rotatably supported by the roller shaft (210) by abutment at the inner peripheries of the first end rim (250) and the second end rim (260), so that the roller shaft (210) upon rotation defines the inner peripheral shape of the concrete elements (240); rotating the shaft to rotate the mould; feeding curable concrete to the rotating mold (220); stopping the rotation of the mould (220); removing the cured concrete element from the mould (220); w wherein the inner perimeter of the mould wall defines an exterior shape of the concrete element that varies along and/or radially to the direction of the rotational axis. There is further provided an arrangement (200) for making such concrete elements (240).

A method, apparatus and computer program product are provided for displaying messages by reducing a reflectivity of a display. A display, such as a smart mirror, provides reflective properties and digital information. The reflectivity of some portions of the display may be altered such that the display provides the visual effect of steam. By varying the reflectivity in different portions of the display, messages may be provided via the display so as to appear written in the steam. Trigger actions, such as a user entering the vicinity, the detected sound of miming water, and/or the like, may cause the visual effect of steam or display of the message. A user may provide a message by a hand gesture, or writing the message in the air and see the message at is provided via a display. Users may transmit messages to other users, and may view received messages in the display.

The invention provides a pipeline leakage monitoring system and method. The method includes the steps: providing a conductive module and enabling the conductive module to form an electric loop by leaking liquid in pipeline leakage; detecting the resistance value of the electric loop by a detection module; transmitting the resistance value by a communication module; receiving the resistance value transmitted by the communication module by a server or processor, and determining a leakage position according to the resistance value. By the aid of the conductive module, when the pipeline leaks, twoconductive parts of the conductive module are conducted to form the electric loop by the conductive leaking liquid, so that the leakage position can be determined according to the resistance value ofthe electric loop, the problem of current pipeline leakage monitoring is solved, and the situation of poor current heat supply network construction quality and difficulty in pipeline leakage locatingis changed. Moreover, operation is simple, complicated monitoring equipment is omitted, and cost is low.

The present invention concerns the field of fluid catalytic cracking (FCC) processes. The invention provides a process increasing production of LPG and propene in FCC units operating under conditions of maximisation of middle distillates of low aromaticity, such that they may be incorporated into the diesel oil pool. The invention also relates to the preparation and employment of additives based on zeolites having small pores, such as ferrierite (FER), in catalytic systems for FCC units, wherein conditions of low severity are adopted with a view to increasing yields of LPG and light olefins whilst improving stability of petrol. The invention also provides an original catalytic system, being more efficient than catalytic systems known in the state of the art, to increase the yield of LPG and propene without prejudicing the yield and quality of LCO. Furthermore it provides a method of preparation of an additive for said process employing the zeolite ferrierite.

The invention relates to a bearing capacity experiment device for a foundation for civil engineering. The problem that in a traditional teaching process of the civil engineering major, the demonstration of detecting the bearing capacity of the foundation cannot be conducted in class is solved; an experiment box body is divided into a plurality of cavity bodies, soil of different types can be placed in the cavity bodies to achieve the purpose that thedetecting experiment for thebearingcapacity of the foundationadopting the soil of different types can be simulated, and when a tapered probe penetrates through soil under the knocking effect of a heavy hammer and reaches the distance required by the experiment, the number of times of knocking is recorded on a recording board; the length, penetrating through soil, of the tapered probe and the number of the required times of knocking are shown visually, the bearing capacity of the foundation of the detected soil is obtained through evaluation, and a teacher combines theoretical knowledge of books with on-site demonstrations in class to help students to master knowledge points of all steps in the process of detecting the bearing capacity of the foundation better, and the teaching efficiency is greatly improved.

The invention provides a measurement system and decomposition method for integral sound vibration and firmware vibration of a violin. The measurement system comprises a violin excitation device, an acoustic sensor, an acoustic signal amplifier, an analog-to-digital converter, a computer acoustics analysis system, a laser scanning front end, an optical signal amplifier and a converter. A super-magnetostrictive transducer with two-bands of 20Hz to 11kHz and 9.5kHz to 21kHz is arranged in the excitation device. The sound sensor receives an integral sound vibration signal of the violin, and carries out amplification, conversion and computer processing to generate a violin integral sound vibration spectrogram. The laser scanning front end focuses laser to collect a violin firmware vibration optical signal, and carries out amplification, conversion and computer processing to generate a firmware vibration spectrogram. Firmware vibration and integral sound vibration spectrograms are compared, and a multi-stage cavity vibration spectrogram is acquired through decomposing. The invention provides a feasible technology and method for tone adjustment and acoustic quality objective appraisal in a violin making process and teaching and performance study of the violin.