163results about How to "Avoid vibration effects" patented technology

The present invention utilizes aperture array element and vari-focus optical element in confocal microscopy system. With the aperture array element lateral scanning property can be obtained and with vari-focus optical element axial scanning property can be obtained. Especially Micromirror Array Lens is used as a vari-focus optical element, fast and extended depth of focus scan range can be obtained. Thus the present invention of confocal microscopy with the vari-focus optical element increases scan speed of confocal microscopy system. The confocal microscopy system of the present invention comprises an illumination source, an aperture array element, a vari-focus optical element, an objective lens element, a photosensitive optical sensor device. With these elements, confocal microscopy is performed to get three dimensional images. Three dimensional with the confocal microscopy of the present invention can be obtained three dimensional images: two dimensional lateral images can be obtained with aperture array element scanning laterally with multiple aperture to increase scanning speed and the depth information of each pixel in two dimensional image can be determined by the vari-focus optical element. Thus three dimensional images can be reconstructed by the two dimensional imaged obtained from lateral scan and depth information from the axial scan. The present invention of the confocal microscopy system improves slow speed of the confocal system with considerable amount by use of fast varying vari-focus optical element and fast scanning aperture array element.

Embodiments of the invention provide a building vibration reduction method and a vibration reduction effect evaluation method influenced by rail transit vibration. The overall vibration reduction method comprises: obtaining the target vibration reduction rate of a newly-built building based on the base vibration amount and the target vibration amount; obtaining a target inherent frequency of the newly-built building based on the target vibration reduction rate; and obtaining the rigidity of the vibration damping pad based on the target inherent frequency, and obtaining the vibration damping building with the target vibration damping function after the vibration damping pad is installed on the building base. According to the overall vibration reduction method and the vibration reduction effect evaluation method for the building affected by rail transit vibration provided by the embodiment of the invention, the target vibration reduction rate is obtained by newly building the base vibration quantity and the target vibration quantity of the building, then the target inherent frequency is obtained, and finally the rigidity of the vibration reduction pad is designed; wherein the vibration reduction pad is used for obtaining a newly-built vibration reduction building with a vibration reduction function; and the vibration reduction effect of the vibration reduction building is evaluated, so that the vibration influence of the rail transit can be effectively avoided for the newly-built building.

A tape guiding mechanism for guiding a traveling tape is provided including a guide roller for guiding the traveling tape and a regulator which rubs against at least one edge of the traveling tape in its width direction, in which the guide roller includes a circumferential surface with which the tape is in contact, a spiral groove is formed on the circumferential surface around an axis of the guide roller, and the traveling tape shifts to one side in a width direction on the circumferential surface of the guide roller.

The invention discloses an optical fiber-coupled laser sum frequency technology-based trace mercury concentration detection method and device. The device comprises a data acquisition card, two laser diode drivers, two diode lasers with tail fibers and different wavelengths, a 1: 2 tapering lens optical fiber, barium metaborate (BBO) crystals, a quartz lens, a beam splitter prism, two reflectors, a light splitter, a reference cell, a sample tank, two photomultipliers, two filters and a computer. The method utilizes a multiple linear regression algorithm and an automatic circuit control wavelength feedback technology to realize on-line continuous detection of a mercury vapor concentration.

The invention relates to a special soil-fetching device for a static triaxial compression test of soil, comprising an external tube of the soil-fetching device, wherein the external tube of the soil-fetching device is a framework structure; the upper end of the external tube of the soil-fetching device is connected with a joint, and the lower end of the external tube of the soil-fetching device is connected with a tubular boot; a center shaft rod of the soil-fetching device is arranged in the inner center of the external tube of the soil-fetching device; the upper end of the center shaft rod of the soil-fetching device is connected with the joint; and a plurality of sampling tubes are arranged on the center shaft rod of the soil-fetching device. The special soil-fetching device is pressedinto the soil layer at the bottom of a borehole to sample the soil in a static manner when the soil layer of a predetermined depth is drilled by a universal drilling device. After finishing sampling the soil, the special soil-fetching device is rotated at a certain angle through the drilling device so as to disconnect the soil sample in the standard sampling tubes from the lower soil layer, the special soil-fetching device is taken out from the borehole, and then the sampling tubes are unloaded, placed in a storage box and delivered to a lab; and the operation for next soil sampling can be performed by re-installing new sampling tubes. The soil sample taken out from the sampling tubes can be directly used for a test by testing personnel, thus the accuracy and success ratio of the test canbe ensured, and the working efficiency is improved.

The invention relates to the technical field of earphone testing, in particular to an earphone voice pickup sensor vibration test system and vibration test method, and the system comprises an upper computer, a vibration table, an acceleration sensor, a sound card, an adaptive amplifier and a power amplifier. The sound card receives signals transmitted by the upper computer and outputs the signals to the power amplifier, and the power amplifier amplifies the signals and then drives the vibration table to vibrate; the adaptive amplifier supplies power to the acceleration sensor and transmits signals fed back by the acceleration sensor to the sound card, and the sound card receives the signals and transmits the signals to the upper computer. The test method comprises the step of calibrating the vibration test system by using the delivery calibration curve of the acceleration sensor. According to the system and the test method, the acceleration sensor is used for calibrating the amplitude of the vibration table, the problem that the amplitudes of the vibration tables of multiple sets of test systems are inconsistent under the same frequency is solved, copying of the vibration test systems is facilitated, and the system and the test method have the advantages of accurate test result, high efficiency, good stability and the like and can meet batch test requirements of production lines.

The invention relates to a sensor and a preparation method thereof, in particular, a quartz crystal resonance sensor welded by using low-temperature glass solder and a preparation method of the quartz crystal resonance sensor. An existing atomic force microscope is a micro cantilever structure-based force sensor, and the micro cantilever structure-based force sensor needs a huge optical detection system, and the quality factor and sensitivity of the micro cantilever structure-based force sensor are low, and as a result, the micro cantilever structure-based force sensor cannot be applied to extreme test conditions, while, with the quartz crystal resonance sensor of the invention adopted, the above situation can be avoided. According to the quartz crystal resonance sensor welded by using the low-temperature glass solder, two or four identically-sized-and-shaped quartz crystal resonance cantilevers are welded together through the low-temperature glass solder. The preparation method of the quartz crystal resonance sensor includes the following steps that: two or four identically-sized-and-shaped quartz crystal resonators are vertically fixed on a welding table; melt low-temperature glass solder is added at welding seams through electric soldering iron; and the two or four identically-sized-and-shaped quartz crystal resonators are welded together at 320 to 375 DEG C, so that the quartz crystal resonance sensor can be obtained. With the preparation method, a quartz crystal resonance sensor can be obtained.

The invention discloses a thrombus elasticity measuring device and a thromboelastogram acquisition method, and relates to the technical field of clinical detection and analysis. The thrombus elasticity measuring device comprises a micro-fluidic chip, a vibration assembly, a detection assembly and a main control assembly, wherein the micro-fluidic chip is provided with a liquid storage tank and a test channel communicated with the liquid storage tank, the test channel is provided with a quantitative tank and a test tank which are sequentially communicated, and a sample can be added into the liquid storage tank; the vibration assembly is connected with the micro-fluidic chip so as to drive the micro-fluidic chip to vibrate at a preset frequency within a preset duration; the detection assembly is used for respectively detecting a plurality of amplitudes of the sample in the test tank under a plurality of preset frequencies in each preset duration corresponding to a plurality of preset durations; the main control assembly is electrically connected with the vibration assembly, the detection assembly and the micro-fluidic chip and used for controlling the preset frequency of the vibration assembly and receiving and processing detection information of the detection assembly so as to output a thromboelastogram of the sample changing along with the preset duration and the preset frequency.

The invention discloses a hot pressing sintering machine for packaging a high-power semiconductor device. The structure comprises a hot pressing sintering machine, an overhaul door, a machine door, aman-machine interface and a heat radiator. The hot pressing sintering machine is composed of a machine body, a power supply device, a PLC programmable controller, a displayer and a hot pressing furnace. The PLC programmable controller can bind the wire through a wire harness mechanism so as to avoid misalignment of the wire caused by random wobbling of the wire. The wire is pressed on the conductive terminal by using the wire pressing wheel so as to avoid termination of working caused by poor contact due to the influence of external vibration on the wire during operation. When the wire is burnt out, the outer cover of the hot pressing sintering machine does not need to be disassembled and the wire does not need to be re-inserted. The servo motor drives the motor shaft to rotate, and the wire trapped under the bottom end is re-pushed into the bottom end of the wire pressing wheel by the wire feeding wheel on the motor shaft so as to save maintenance time, improve working efficiency andavoid damage to material processing.

The invention discloses a heat dissipation mechanism. The mechanism comprises a heat dissipation substrate connected with a heating component, a plurality of heat dissipation fins arranged on the surface of the heat dissipation substrate and used for natural heat dissipation, a flow channel arranged in the heat dissipation substrate and used for circulating flow of cooling liquid, and a liquid cooling distribution unit communicating with a water inlet and a water outlet of the flow channel and used for controlling the flow of the cooling liquid. The mechanism also comprises a temperature sensor in signal connection with the liquid cooling distribution unit and used for detecting the temperature of the heating component, wherein when the detection value of the temperature sensor is higher than a first target threshold value, the liquid cooling distribution unit outputs cooling liquid into the flow channel. Therefore, two heat dissipation modes including a pure natural heat dissipation mode and a natural heat dissipation and cold plate heat dissipation composite mode simultaneously exist, the configuration cost and energy consumption can be reduced on the basis of improving the heat dissipation efficiency, meanwhile, the noise and vibration influences are avoided, and the invention is more suitable for the waterproof and dustproof use environment. The invention further discloses a server, and the beneficial effects of the server are as mentioned above.

The invention discloses a gypsum homogenizing chute. The gypsum homogenizing chute comprises a chute body, a vibratory motor, a sensing rod, a supporting rod, a weight hammer, a hammer head, a stroke switch, through holes, a feeding hole and a discharging hole. The gypsum homogenizing chute disclosed by the invention has the advantages that the continuity of adding gypsum into clinker can be well controlled, the gypsum with large water content and high density is prevented from blocking an inclined-groove pipeline in an inclined groove; and the alarming can be given quickly when the gypsum flow is cut off, so that non-standard blending and homogenization of materials entering a mill is avoided.

The invention provides a flapping-wing micro air vehicle vision feedback control method, which can realize quick positioning and flight control on the flapping-wing micro air vehicle. The method comprises steps: a peripheral Kinect sensor is used to capture the motion image when the flapping-wing micro air vehicle flies; according to the captured motion image, three-dimensional space coordinates of the flapping-wing micro air vehicle are determined; and according to the deviation between the determined three-dimensional space coordinates of the flapping-wing micro air vehicle and preset three-dimensional space coordinates, the flapping-wing micro air vehicle flies according to the preset three-dimensional space coordinates. The method is applicable to the flapping-wing micro air vehicle control field.

The invention discloses a compact wireless embedded signal processor applied to a cold-rolled strip shape meter. The processor comprises a rotary head and an outer cover. An excitation power supply board, an analog acquisition board, a digital processing board and a wireless transmission board are arranged in the rotary head. An electrical connector is arranged on one end of the rotary head. The other side is in sleeve joint with an inner magnet ring. The rotary head is nested in the outer cover. A wireless receiving board, a voltage regulator circuit board and an outer magnet ring are arranged in the inner wall of the outer cover. A junction box is arranged on the outer wall of the outer cover. A communication cable and a high-frequency power supply cable are led out from the junction box. The high-frequency power supply cable is connected with the voltage regulator circuit board and the outer magnet ring through the junction box. The voltage regulator circuit board powers the wireless receiving board. The outer magnet ring powers the inner magnet ring. The inner magnet ring is connected with the excitation power supply board and powers the excitation power supply board. An excitation signal is transferred to a detection roller through the electrical connector to provide an incentive signal for the sensor. Power supply voltage of different amplitudes powers the boards on the rotary head. The compact wireless embedded signal processor provided by the invention has the advantages of simple maintenance, high reliability, strong anti-interference, long service life and the like.

The invention discloses a phase microscope imaging method based on an SHWS (Shack-Hartmann Wavefront Sensor). The phase microscope imaging method comprises the following steps: (1) collecting Hartmanngram; (2) calculating mass center distribution; (3) calculating wavefront slope; (4) reconstructing a wavefront phase; and (5) reconstructing a three-dimensional fault refractive index. According to the phase microscope imaging method, the problems of a phase microscope based on an interference method that the establishment of hardware is complicated, and a reconstruction step is complicated and a lot of noises are easily caused by vibration influence can be improved by effectively utilizing the SHWS; compared with an experiment of an existing reconstruction method, the experiment of the method according to the invention has the advantages that the hardware is greatly simplified, the reconstruction step is simplified and the vibration influences are avoided.

The invention provides an ultra-static vacuum testing device and method in order to solve the technical problems that the spacecraft ground vacuum test result is inaccurate and even test cannot be performed due to vibration and jitter of a vacuum test device. According to the invention, a vacuum tank and a test vacuum tank are separated and are connected through a corrugated pipe, so that a dry pump, a molecular pump and a cryogenic pump are prevented from being directly connected to the test vacuum tank, and the vibration influence on the test vacuum tank in the operation process is avoided;through the support of an air cylinder of a first air floating platform, the test vacuum tank is enabled to be in an air floating state, and the vibration influence of the outside on the test vacuum tank is isolated; through the support of an air cylinder of a second air floating platform, an object carrying platform is enabled to be in an air floating state, so that a test product placed on the object carrying platform is in an air floating state, and the vibration influence of the outside on the test product is isolated.