182 results about "Optical lever" patented technology

The invention discloses a thrombus elasticity testing device. The thrombus elasticity testing device comprises a supporting plate, a measuring unit, a driving unit and a cup holding unit, wherein the measuring unit and the driving unit are arranged on the supporting plate, and the cup holding unit is connected with the driving unit; the measuring unit comprises a base, a rotating part, a rotating shaft and a balance spring. According to the thrombus elasticity testing device, the driving unit is combined with the cup holding unit to carry out regular vibration on a blood sample in a measuring cup to simulate a physiological thrombus formation environment in vivo, thereby guaranteeing an accurate and reliable test result; by virtue of a structure consisting of the conical tip-shaped rotating shaft and the balance spring in the measuring unit, friction generated during vibration of the measuring unit is decreased sharply, and the shock resistance of the complete device is greatly improved on the premise of guaranteeing restoring force, so that the measurement reliability is high; by virtue of an optical lever measuring mechanism, the resolving ability and sensitivity of thrombus elasticity measurement are effectively increased, so that the measuring accuracy is remarkably improved; by virtue of a measuring cup loading-unloading mechanism, the operation is convenient and reliable.

The invention relates to a laser amplification measurement method of the deformation of a twisted structure by utilizing laser. The technical proposal of the invention is as follows: a support is arranged on a rotation angle part to be measured of the twisted structure to be measured, a laser beam transmitter is arranged on the support, a scale optical target is set, when the twisted structure to be measured is displaced or twisted, a laser beam which is transmitted by the laser beam transmitter is displaced at a projection point on the optical target, a deformation valve of the rotation angle or a twist angle of a measurement point of the twisted structure to be measured is obtained according to the formula that Theta is equal to arctg (Delta divided by L), and the stiffness parameters of the twisted structure to be measured is calculated, thereby obtaining the tiny rotation deformation amount of the point to be measured. The shortcoming that the non-contact measurement instruments are always lack of precision on the long-distance measurement of the tiny deformation of large-scale structures is solved. The laser amplification measurement method of the invention arranges the measurement instrument on a measured object to allow the measurement instrument to move together with the deformed part of the measured object, thereby having the advantage that the tiny displacement to be measured is fully amplified by utilizing the optical lever principle.

The invention relates to the technical field of medical equipment and particularly relates to a measurement device and method for thrombus elasticity. The measurement device for thrombus elasticity comprises a driving module, an adjustable constant-temperature module, a testing cup, a testing needle, a reflection mirror and a moving device, wherein the adjustable constant-temperature module is arranged on the driving module and is connected with the driving module; the testing cup is arranged in the adjustable constant-temperature module; the testing needle is arranged on the testing cup; the reflection mirror is fixed on the testing needle; the moving device is connected with the reflection mirror; the adjustable constant-temperature module is used for heating or cooling the testing cup. The measurement device for thrombus elasticity further comprises a laser device, a PSD (Position Sensitive Detector) position sensor, a data processing module which is electrically connected with the PSD position sensor, and a man-machine interaction module which is electrically connected with the data processing module. According to the measurement device and the measurement method provided by the invention, an optical lever principle is used for measuring thrombus elasticity and the influences caused by the measurement with an electromagnetic sensor are eliminated, so that the measurement precision is improved. The adjustable constant-temperature module is used for adjusting and controlling the temperatures of experiment samples, so that the influences of an environmental temperature during blood clotting can be really simulated, and the accuracy of measured data is improved.

The invention discloses a monitoring device for a viscoelastic strength of blood. The monitoring device comprises a supporting plate, a detection mechanism, a vibration mechanism and a measuring cup, wherein the detection mechanism is internally provided with a laser transmitter and an angular displacement sensor; a probe is provided with a mirror surface; the vibration mechanism comprises a guide rod, a rotary ring, a driving device, a cup frame and a cup cavity; the measuring cup comprises a cup body, a cup head and a heavy block embedded in the cup head; the detection mechanism is externally sleeved with a rotary bearing; the rotary ring is fastened on the rotary bearing. According to the monitoring device for the viscoelastic strength of the blood, the vibration mechanism is used for carrying out regular vibration on a blood sample in the measuring cup to simulate a physiological environment in which in-vivo thrombi is formed; an optical lever method replaces a traditional electromagnetic measurement method to be used for detecting so that the measurement precision and the flexibility are obviously improved; the device is simple and practical in structure, small in mechanism friction, accurate in probe positioning and high in measurement precision, and can meet the requirements of current clinical blood coagulation detection analyses.

A modular AFM/SPM which provides faster measurements, in part through the use of smaller probes, of smaller forces and movements, free of noise artifacts, that the old generations of these devices have increasingly been unable to provide. The modular AFM/SPM includes a chassis, the foundation on which the modules of the instrument are supported; a view module providing the optics for viewing the sample and the probe; a head module providing the components for the optical lever arrangement and for steering and focusing those components; a scanner module providing the XYZ translation stage that actuates the sample in those dimensions and the engage mechanism; a isolation module that encloses the chassis and provides acoustic and/or thermal isolation for the instrument and an electronics module which, together with the separate controller, provide the electronics for acquiring and processing images and controlling the other functions of the instrument. All these modules and many of their subassemblies are replaceable and potentially upgradeable. This allows updating to new technology as it becomes available.

The invention discloses a method for measuring the piezoelectric coefficient of a nano-electronic thin film micro area based on an atomic force microscope, which relates to the analysis and characterization of the physical and chemical properties of materials, in particular to a method for measuring the piezoelectric coefficient of a thin film material based on the atomic force microscope. AC voltage Vref is imposed on a piezoelectric material to be measured for generating a deformation Sigma=d question mark Vref; by using the optical lever system of the atomic force microscope, the deformation Sigma is converted into an electrical signal Vtip= S question mark Sigma; and then Vd=G question mark Vtip is obtained by amplification of a lock-phase amplifier; finally, the micro-area piezoelectric coefficient (see the formula) of the piezoelectric material to be measured is obtained by calculation. The invention realizes the micro-area piezoelectric coefficient measurement of a thin-film sample within a nano-scale scope, and thus enlarges the application scope of the atomic force microscope; the entire measurement method is simple and easy for mastering.

The invention discloses an atomic force microscope system suitable for high-speed scanning. The system comprises an X-direction scanner, a two-dimensional scanning module, an optical lever detection module and an optical microscope module, wherein the X-direction scanner is carried on a vertical lifting motor for performing one-dimensional scanning of horizontal direction on a sample; the two-dimensional scanning module corresponds to the sample to perform Y-direction and Z-direction scanning on the sample; the optical lever detection module and the optical microscope module are in light path connection with the two-dimensional scanning module for performing optical detection on the sample. The sample is fixedly arranged on the X-direction scanner. According to the atomic force microscope system suitable for the high-speed scanning, higher scanner bandwidth and a better optical observation effect are achieved while a smaller laser spot size and larger range beam tracking capacity can be guaranteed.

The invention belongs to the technical field of precision measurement and the field of optical engineering, and particularly relates to an auto-collimation three-dimensional angle measuring device andmethod based on polarizing beam splitting. The device is composed of a light source, a polarizer, a beam splitter, a polarizing beam splitter, image sensors, a collimating mirror, a fixed plane mirror and a cooperative target. According to the method, a measuring beam is divided into two mutually perpendicular measuring light by the cooperative target, the measuring light returns after being reflected by the fixed plane mirror and the cooperative target, and corresponding images are separately formed on the image sensors; and the positions of the two images are adopted to calculate a pitch angle, a yaw angle and a roll angle of the cooperative target with respect to an optical axis, so that a capability of detecting a three-dimensional corner of the measured object space. Since the principle of optical lever amplification is adopted to the roll angle and is consistent with the measurement principle of the pitch angle and the yaw angle, therefore, the technical advantages of high precision and large working distance for the three-dimensional angle measurement are achieved, and the advantage that the measurement accuracy is increased under the same working distance or the working distance is increased under the same measurement precision is achieved; two measuring light spots are received by two image sensors, the requirements for the subsequent image processing technique is reduced, and the frequency response of the measuring device is improved; and in addition, the designed cooperative target has the technical advantages of simple structure and low production cost.

The utility model discloses a goniometer verification method based on an optical lever and belongs to the technical field of angle error measurement. The goniometer verification method based on the optical lever aims to resolve the problem that an existing goniometer verification device is expensive and low in verification precision. The goniometer verification method based on the optical lever comprises the following steps: (1) installing a lower rotary table, an upper rotary table, a plane mirror, a laser device, a photoelectric detector and a reading head on a verification platform, and controlling a laser after being reflected by the plane mirror to impinge on a target surface of the photoelectric detector; (2) collecting initial point light spot image data; controlling the lower rotary table to drive the upper rotary table and the plane mirror to rotate, so that the reflected light after being deflected impinges on the target surface, and collecting the measurement values of a marked angle and a angle increment; controlling the upper rotary table to rotate in a reverse direction, so that the reflected light after being reversed impinges on the target surface; calculating the standard value sequence of the angle increment; calculating the standard value sequence of the marked angle. The goniometer verification method based on the optical lever is simple in device, low in cost and capable of improving the precision of the goniometer.

The invention discloses a vacuum atomic force microscope and a using method thereof, belonging to the field of micro-topography detecting equipment; the microscope comprises an electron beam launching device, a secondary electron detector, a probe with a cantilever, a piezoelectric ceramics scanner and a feedback controller. When in work, electron beams are irradiated to the cantilever of the probe; as the acting force between the probe and sample atoms causes the cantilever to become deformed; a secondary electron signal changes; the acting force between a pinpoint and the sample is controlled to be constant by the signal feedback; the pinpoint scans the surface of the sample point by point and can image surface topography of the sample. The currently common optical lever does not need to be drawn into the invention; the invention overcomes design difficulty brought about by the conventional atomic force microscope applied in vacuum environment, synthesizes two nanophase material characterization methods which are the advantages of the atomic force microscope and an electronic microscope, and can realize the continuous measuring on the material from millimeter size to the sub-nanometer size.

The invention relates to a method and a device thereof for testing a deformation of a steel wire in a wire rope strand. An optical lever consisting of a plane mirror with three supporting points, a vertical measuring scale and a telescope is arranged on one side of a wire rope to be tested; two front supporting points of the plane mirror are fixed on a fixing chuck while the rear supporting point is fixedly connected to a point to be tested on the wire rope; the plane mirror can rotate by using a connecting line between the two front supporting points as an axis; the measuring scale is provided with the telescope corresponding to the plane mirror, by which a numeric value reflected on a mirror surface can be conveniently seen; the numeric value is read again after the plane mirror is rotated at a certain angle; the two numeric values are subtracted to obtain a difference value which is a value of magnification after the wire rope is stretched; and the stretched length of the deformed wire rope can be deducted by using a trigonometric function formula. The method and the device thereof for testing the deformation of the steel wire in the wire rope strand realize measurement of magnifying to read the stretched length of the small wire rope with a simple structure by using the optical lever and the principle of mirror reflection and are convenient for experiments.

The present invention relates to a micro-cantilever beam array biochemical sensing apparatus and a biochemical detection method. The micro-cantilever beam array biochemical sensing apparatus comprises a biochemical reaction cell, a micro-cantilever beam array, a vertical cavity surface emitting laser (VCSEL) array, a signal generator, a photoelectric position sensitive detector (PSD) and a data treatment device. According to the apparatus, a laser beam emitted by the VCSEL array is adopted to periodically scan the micro-cantilever beam array, an optical lever principle is adopted to amplify bending deformation signals of various micro-cantilever beams in the micro-cantilever beam array, and the PSD is adopted to perform time program detection receiving so as to real-timely monitor biochemical reaction process information on various micro-cantilever beams. With the present invention, highly sensitive, rapid and parallel detection on the biochemical reaction information of the micro-cantilever beam array can be achieved, and the apparatus can be used for monitoring and detection in food safety, environmental pollution, bio-medicine, scientific researches, production manufacturing and other fields. The invention further discloses a biochemical detection method of the micro-cantilever beam array biochemical sensing apparatus.

The invention discloses a Young modulus with laser reflection replacing telescopes for measuring metal wires and relates to the field of measuring of Young modulus. The problem existing in telescope observation is mainly that: regulating is complex, and a part of students cannot find the image of a scaleplate so that progress of an experiment class is affected. The technical scheme of the Young modulus with laser reflection replacing telescopes for measuring metal wires is that laser emitted by a semiconductor laser passes through a diaphragm which has the inner diameter of 2mm and the length of 30mm and is fixed on the scaleplate, the laser penetrates through the diaphragm and then is irradiated on a plane mirror of an optical lever, the horizontal direction of the plane mirror is adjusted so as to lead the reflected laser to be irradiated on the scaleplate, pitching of the plane mirror can be adjusted so that the reflected laser can be located near the middle position of the scaleplate, the reading of the scaleplate where the laser is located is recorded, weights are added, and then the reading of the scaleplate where the laser is located after the weights are added is recorded. The Young modulus with laser reflection replacing telescopes for measuring metal wires has the advantages of being simple in operation, fast and audio-visual in adjusting, obvious in effect of force action, economic in device and fast in measuring.

The invention relates to a Young's elastic modulus tester with a vernier depth gauge. In the existing Young's elastic modulus instrument for measuring a steel wire by a pulling method, an original optical lever system is cancelled, and the steel wire and a main scale of the vernier depth gauge are fixed together by a dual-purpose movable clamping head. An auxiliary scale of the vernier depth gauge is fixed on a workbench, the upper end of the steel wire is fixed on an upper beam of a frame of the Young's elastic modulus tester, while the lower end is connected with a hook tray, wherein weights can be increased and reduced on the hook tray so as to change pulling force. A testing person increases and reduces the weights to change the pulling force, and the steel wire is stretched along with the changed pulling force; readings on the vernier depth gauge are changed, and a difference value of the readings is the stretching quantity of the steel wire, thus a small variable quantity of the steel wire length being difficult to measure in a process of measuring a Young's elastic modulus by a stretching method is accurately measured through the vernier depth gauge. Other physical quantities required by calculating the Young's elastic modulus can be measured according to a conventional method.

The reference mark has steps and is formed on a sample. A stage moves in X and Y directions. The sample M is placed on the stage. An optical lever type height position sensor emits light to detect the reference mark FM′ by the stage being scanned. The spot position of light reflected on the sample is detected in position sensitive detector. The X and Y coordinates of the position of the stage positioned when the spot position of the reflected light is changed is detected. The detected X and Y coordinates are regarded as the position C of the reference mark FM′. The position of a phase defect D located in the sample M is specified on the basis of the position C of the reference mark FM′. The position of a portion on which writing is to be performed is determined on the basis of a relationship with the specified position of the phase defect D.

A modular AFM/SPM which provides faster measurements, in part through the use of smaller probes, of smaller forces and movements, free of noise artifacts, that the old generations of these devices have increasingly been unable to provide. The modular AFM/SPM includes a chassis, the foundation on which the modules of the instrument are supported; a view module providing the optics for viewing the sample and the probe; a head module providing the components for the optical lever arrangement and for steering and focusing those components; a scanner module providing the XYZ translation stage that actuates the sample in those dimensions and the engage mechanism; a isolation module that encloses the chassis and provides acoustic and/or thermal isolation for the instrument and an electronics module which, together with the separate controller, provide the electronics for acquiring and processing images and controlling the other functions of the instrument. All these modules and many of their subassemblies are replaceable and potentially upgradeable. This allows updating to new technology as it becomes available.

The invention discloses an automatic loading and unloading device which comprises a mechanical structure part and a control system part and is characterized in that the mechanical structure part comprises a blank automatic loading module, a cutting blank clamping module and a workpiece unloading module; the blank automatic loading module mainly comprises an automatic loading device and an automatic feeding device; the automatic loading device mainly consists of three small air cylinders; the three small air cylinders are fixedly arranged on the edge of a support frame along the workpiece length direction at equal intervals; the automatic feeding device mainly consists of two groups of parallel chains, a chain wheel, a stepping motor and a coupler; the cutting blank clamping module mainly comprises a cross beam, a vertically-moving air cylinder, an optical lever, a linear bearing and a clamping claw; and the workpiece unloading module mainly comprises a driving air cylinder, a linear slide rail, a slide block and an unloading pusher.

The invention relates to a measuring system of nanometer precision metal linear expansion coefficient, which includes an optical lever micrometric system, a temperature control system, a temperature collecting system and a virtual platform, wherein the optical lever micrometric system includes a first plane mirror (M1) and a second plane mirror (M2) that are arranged in parallel, and a position sensing detector (PSD); the temperature collecting system includes a thermocouple and a signal conditioning board; the temperature control system receives the control signal through a silicon-controlled trigger panel in the temperature control system, so as to control the conduction and cut-off of the controlled silicon and then control the heating temperature of the to-be-measured metal; and the visual platform includes a displacement signal collecting module, a temperature signal collecting module, a PID regulating module and a data processing module. The system can set and precisely control the temperature of the to-be-measured metal material, determines the linear expansion coefficient of the metal material with high precision, has high detecting speed, precision and reliability, is visual to see, and is simple to operate.

The invention relates to an automatic painting device for a wooden door, belonging to the field of automatic painting equipment. The automatic painting device comprises a wooden door support frame guide rail, wheels, connecting rod motors, connecting rod motor bases, transmission connecting rods, transmission connecting rod supports, flywheels, flywheel support frames, crank rockers, lead screw motors, couplers, bearings, bearing blocks, connecting rod slide blocks, left lead screws, hydraulic cylinders, executing connecting rods, hydraulic cylinder fixed seats, travel switches, lead screw nuts, automatic spray gun seats, optical lever slide blocks, wooden door support plates, automatic spray guns, optical levers, right lead screws, lead screw seats and a bottom plate, wherein the right lead screws are fixed on the lead screw seats, the left lead screws are installed on the bearing blocks, the lead screw motors are connected with the left lead screws through the couplers, the travel switches are installed on the lead screw nuts, the automatic spray guns are installed on the automatic spray gun seats, the connecting rod slide blocks are installed on the transmission connecting rods, the hydraulic cylinders are installed on the hydraulic cylinder fixed seats, and the wooden door support plates are installed on the hydraulic cylinders. The automatic painting device has the beneficial effect of being capable of painting the wooden door automatically.

The invention discloses a hydraulic gate hoist, and in particular relates to a combined screw hoist. The combined screw hoist mainly comprises a power machine, a variable transmission system, lead screws, nuts, a machine base and a hand crank, wherein, the lead screws are driven by a drive component to rotate. The combined screw hoist is characterized in that a plurality of lead screws are coaxially and horizontally arranged along the direction of the gate on the machine base at the center of a plurality of pairs of lifting points, wherein, the lead screws are conjoined screws, namely two lead screws which are coaxially connected together and are opposite in rotation directions of threads, and optical levers are arranged in the middle of two threads of the conjoined screws; and the two threads are equipped with the nuts, the nuts are respectively equipped with mechanical devices, and the mechanical devices are connected with the gate through mechanical facilities and connection piecesmatched with the mechanical devices. By utilizing the combined screw hoist, the porous gate can be lifted up and down by one power machine and one main variable transmission system, which obviously lowers the manufacturing cost of single machine; and for medium and small-sized hydraulic gates which are not frequently opened and closed, the combined screw hoist can fully replace an expensive winchhoist, thus achieving great economic significance.

The present invention provides a novel humidity chamber suitable for use with an atomic force microscope (AFM). The humidity chamber of the present invention employs an intricate geometrical design which can accommodate a scanned-stylus AFM with an optical lever. This geometrical design allows the invention to enclose one or more of the AFM scanner, tip assembly, optical lever detection system, sample and an optical microscope objective lens, without degrading the ability to operate the AFM or the related systems. The invention is comprised of two major pieces: a chamber within which the AFM scanning head assembly is placed, and an integrated sample platform and spring-loaded base-plate that allows samples to be loaded and unloaded without removal of the chamber from the AFM scanning head assembly. The sample platform, which extends up from the base-plate and is inserted into the chamber, can include a magnet that is securely attached to the base. Once the sample platform is positioned inside the chamber, a locking pin can be inserted between the chamber and the bottom portion of the sample platform to secure the sample platform and base-plate. The spring-loaded base allows the z-directional motors of the AFM to be used to position the sample just below the probe prior to scanning, while at the same time providing an essentially air-tight fit between the chamber and the AFM scanning head. An embodiment of the present invention is suitable for use with components that sense and control the relative humidity inside the chamber.