208results about How to "Easy and fast measurement" patented technology

A modular measurement device is provided for quickly and accurately performing non-contact measurements of various objects at different locations within a commercial or residential work area. The modular measurement device generally includes a laser base that is operable to project light onto a measured object; and a portable measurement module adapted to receive light reflected from a surface of the measured object and operable to determine dimensional measurement data for the measured object, where the portable measurement module is configured to releasably couple to the laser base. The operational components of the measurement device are partitioned between the portable measurement module and the laser base. In this way, a single portable measurement module having more expensive operational components may be used with different, less expensive laser bases, where each laser base may be adapted for a different application.

The invention relates to the technical field of aquatic product index measurement and particularly relates to an automatic measuring device and method for fish type morphological parameters. The automatic measuring device comprises a computer, a framework main body (1), a live fish flow guide groove (2) which is obliquely formed on the framework main body (1) and a photographing device which is arranged at the lower end of the live fish flow guide groove (2) and is used for photographing a fish body image; the bottom of the live fish flow guide groove (2) is a transparent platform; the photographing device comprises a bracket (4) arranged on the framework main body (1) and an industrial camera (5) which is in sliding connection with the bracket (4); the industrial camera is in signal connection with the computer; the computer comprises a parameter setting module, a calibration module, an image acquisition module, a fish body size automatic extracting module and a fish body size manual measuring module which are in signal connection in sequence. With the adoption of the device and the method, the fish type morphological parameters can be rapidly acquired in a lossless mode.

A hand-held or tool integrated measurement device is provided for quickly and accurately performing non-contact measurements of dimensions and / or angles associated with various objects in a home or commercial work area. The measurement device generally includes at least one user input element, a non-contact sensor, an image processor and a display element packaged in a portable housing assembly. In operation, a user initiates the measurement by activating the user input element associated with the measurement device. The non-contact sensor receives a trigger signal from the user input element and is operative to collect image data representative of at least a portion of the surface of a measured object. The image processor in turn receives the image data from the non-contact sensor and is operative to convert the image data into measurement data for the measured object. The display element is operable to visually display the measurement data to the user.

The invention discloses a method for measuring planeness through lattice structure light. The method provided by the invention can simply, conveniently and quickly accomplishes medium precision measurement of the planeness through applying principles of the lattice structure light and a laser triangulation method. The method comprises the steps of firstly, through theoretical calculation, obtaining a world coordinate of each light spot of the lattice structure light on an ideal plane; then adopting an image collector calibration method for transforming coordinates to obtain corresponding image coordinates; acquiring images through a camera so as to accomplish transformation from the world coordinates of light spots on each plane to be measured to image coordinates; through operation, obtaining a difference value between the two image coordinates corresponding to each light spot; applying the principle of the laser triangulation method for carrying out coordinate transformation once again, and obtaining physics displacement corresponding to the image coordination difference value; processing the physics displacement of each light spot to obtain the planeness of the plane to be measured.

The invention relates to a method for detecting coaxiality and verticality of a large container by an optical instrument. The large petrochemical containers have common characteristics such as complicated structure, large geometric dimension and high manufacturing precision requirement. The method for detecting coaxiality and verticality of the large container by the optical instrument comprises the two steps of: (1) establishing a datum axis line by using a micro-alignment telescope, mounting a triangular centre bracket at a measured seal head, and reading an offset value of the bracket centre relative to the datum axis line by a micro-drumwheel; and (2) arranging a verticality measuring scale at the end face of the measured seal head, enabling an auto-collimation image to be completely superposed with a local image with an auto-collimation method when a reflector or a large reflection object in front of the telescope is vertical to the principal optical axis of the telescope, if the auto-collimation image is not superposed with the local image, adjusting the included angle between the large reflection object and the principal optical axis of the telescope to enable the auto-collimation image to be completely superposed with the local image, and computing the value of the verticality by using the scale value of a displacement graticule on the telescope and the read value of the micro-drumwheel. The invention is used for detecting the coaxiality and the verticality of the large container.

The invention discloses an optical lens center thickness measuring system and method. The system comprises a light source, wherein the light source is connected with a light splitting device; the light splitting device is over against an optical probe, and the centers of the light splitting device and the optical probe are positioned on the same shaft; one end of the light splitting device is also connected with a spectrograph; and the spectrograph is connected to a computer. The method comprises the following steps: polychromatic light emitted by the light source enters the optical probe after being subjected to light ray coupling by the light splitting device; the polychromatic light passing through the optical probe is irradiated to a measured part for reflecting and refracting; the light which is reflected to the probe enters the spectrograph after passing through the light splitting device; the spectrograph obtains an energy curve graph of different wavelength light according to the energy analysis of returned light; and the obtained data is transmitted to a computer and calculated by a formula to obtain lens center thickness, and the lens center thickness is displayed. The optical lens center thickness measuring system and method have the advantages of simplicity, portability and precise data during measurement, the non-contact measuring method can not damage parts, and the optical lens center thickness measuring system and method are widely applied to the precise measurement of optical parts.

The invention discloses a substation type precision compensation for a robot system with an additional external shaft, belongs to the technical field of industrial robot reverse calibration, and aims to solve the difficulty in compensating the error of the external shaft (guide rail) of the industrial robot. According to the method, based on a robot envelope line, the guide rail is divided into a plurality of substations and substation type compensation is performed. The method comprises the steps: a laser tracker is adopted to measure and recognize the error of the external shaft (guide rail) and the robot, and the compensation for the tail end error of the robot is completed through inputting corrected control commands into the robot. During measurement and recognition of the error of the external shaft, an auxiliary coordinate system is introduced so as to allow the measuring process to be simple and quick, and meanwhile to ensure the precision. Through test verification, the method can greatly improve the absolute positioning precision of the robot with the additional external shaft, so as to allow the robot to be suitable for wider applications.

A measuring method and device of equivalent attaching ash density of electric transmission and transformation equipment external insulation, it is on the theoretical basis of ash density accumulate ply influencing transmitted intensity, working out the ash density of dirtiness layer by comparing the change of light intensity passing dirtiness layer, the device is made up of multi optical detector teams,data acquisition unit and measuring terminal, optical detector teams is made up of the two optical detector teams in the same place, data acquisition unit is made up of multi data acquisition units, the invention can test the spot equivalent attaching ash density of electric transmission and transformation equipment external insulation expediently,effectively and truly, integrating monitoring on-line equipment of existing optical fiber type salt density, proving the data monitoring basis for ensuring the dirtiness grades of electric transmission and transformation equipment external insulation truly and guiding to repair realized state of equipment.

The invention relates to an X-ray doser, in particular to a doser used for measuring and diagnosing quality of an X-ray machine and a measuring method. The doser comprises a semiconductor detector array (1), a preposition current amplifier (2), channel switch modules (3), adjustable gain amplifiers (4), analog-to-digital converters (5), a measuring trigger circuit (6), a single chip microcomputer controller (7), a power supply circuit (8) and a bluetooth wireless transmission module. Through the integration of various parameter measuring functions, the doser and the measuring method realize that tube voltage, exposure time, dose, dose rate and half-value layer of the X-ray can be measured and diagnosed; a plurality of parameter measurement results of the X-ray can be obtained at the same time through only one time of exposure; the high-power Bluetooth wireless transmission technology is adopted and the transmitted measurement data is processed through a laptop, so that remote control and real-time measurement can be realized and unnecessary irradiation dose can be avoided, as a result, the measurement process is convenient and quick to operate.

High radiopacity is achieved in a polymeric marker by combining a polymeric resin, a powdered radiopaque agent having uniformly shaped particles of a specific particle size distribution, and a wetting agent. The method to produce the marker calls for the blending and pelletization of these materials followed by extrusion onto support beading. The resulting supported tubing is subsequently cut to length with the beading still in place. After ejection of the beading remnant the marker is slipped into place on the device to be marked and attached by melt bonding. Marking of a guide wire allows lesions to be measured while the marking of balloon catheters allow the balloon to be properly positioned relative to a lesion.

The invention relates to a detecting device and a detecting method for a rotation center of an angle-of-attack mechanism of a wind tunnel test section. The detecting device comprises a supporting positioning structure with a horizontal extending structure. The supporting positioning structure is provided with a guiding structure which can make the horizontal extending structure move vertically. The extending end of the horizontal extending structure is provided with a detecting positioning structure, and a measuring device which is arranged on the bent cutter supporting plate of the angle-of-attack mechanism of the wind tunnel test section correspondingly with the detecting positioning structure and can perform positive and negative angle-of-attack arc movement of the bent cutter supporting plate. The detecting device and detecting method for the rotation center of the angle-of-attack mechanism of the wind tunnel test section realize more visual and quick measurement process and furthermore establish a standard with small error and high stability. Furthermore the detecting device and the detecting method have advantages of remarkably shortening an application period, reducing number of operators, reducing labor intensity, and greatly reducing cost at each aspect.

The invention relates to an online simultaneous monitoring sensor and an online simultaneous monitoring method for COD (Chemical Oxygen Demand) and nitrogen content of nitrate. The online simultaneous monitoring method is characterized by comprising the following steps: absorbing characteristics of ultraviolet light by using substances to be detected in water based on a Lambert-Beer principle and establishing a relation of absorbance and concentration of the substances to be detected; establishing a linear relation by using an absorbance value of a water sample at 254nm part and a chemical oxygen demand concentration value of the water sample; and establishing a linear relation between the absorbance value of the water sample at 210nm part and the nitrogen content of the nitrate. The monitoring method comprises two steps of calibrating the sensor and testing the water sample; and the measurement range on the chemical oxygen demand of the sensor provided by the invention is 0mg / L-50mg / L and the measurement range on the nitrogen of the nitrate is 0mg / L-7mg / L. The obvious superiority is displayed and the sensor can be directly put into water to measure so as to meet the detection requirements of a common water body.

The present invention relates to a test structure that comprises at least two devices under test DUT, which respectively have a first electrical device resistance in a non-defect state and a second electrical device resistance in defect state, the first being higher than the second electrical device resistance. In the test structure the DUTs are connected in parallel to a first test contact pad via a first conducting line and connected in parallel to a second test contact pad via a second conducting line, and respectively connected to the first conducting line via respective first test resistors, which have known respective electrical test resistances, such that a total electrical resistance between the first an second test contact pads is indicative of the number of DUTs, which have the second electrical device resistance. The test structure allows testing a larger number of DUTs in parallel in a single measurement.

A method for analyzing content of surplus aluminium fluoride in aluminium electrolyte includes mixing sodium fluoride of 15%-35% as mass of testpiece with aluminium electrolyte testpiece and adding analysis water to submerge it, placing it on sand bath of 100-120deg.c for drying it then sintering it at temperature of 740-760deg.c for 15-25min., adding water and grinding it then placing it in beaker for extracting out unreacted surplus sodium fluoride, calculating out content of unreacted surplus sodium fluoride and calculating out content of surplus aluminium fluoride reacted with sodium fluoride.

The invention relates to a camera lens point spread function (PSF) measurement method based on single pixel imaging and can effectively improve the signal to noise ratio of PSF measurement while PSF measurement of the full field of view space variation is realized. Before measurement, firstly, a liquid crystal display (LCD) is vertically placed along an optical axis of a camera; during measurement, firstly, a base image mode required for single pixel imaging is displayed on the liquid crystal display, and the camera is utilized to take a picture; secondly, according to the single pixel imagingprinciple, an optical transmission coefficient from each point on the liquid crystal display to a single pixel on the camera image is calculated; single pixel imaging is performed on all the pixels on the camera image to obtain optical transmission coefficients of all the points on the LCD to all the pixels on the camera image; and lastly, based on the optical transmission coefficients of all thepixels on the camera image, the point spread function from any point on the liquid crystal display to the camera image is calculated. The method is advantaged in that the camera lens point spread function PSF measurement result with the higher signal-to-noise ratio than a traditional star point method can be obtained under the same camera exposure time.

The invention discloses an on-line monitoring method for large-scale wind power tower drum structure stress and belongs to the field of structure health monitoring. Since wind power tower drums are large in size and are located in harsh environment, traditional methods for measuring structure stress with strain gages require more strain gages, and the strain gages are not suitable for use in wind power tower drum structure stress monitoring methods due to the fact that the strain gages cannot be located in harsh environment for a long time. According to the on-line monitoring method for large-scale wind power tower drum structure stress, on the basis of the shaking characteristic of a wind power tower drum, shaking is divided into a shaking balance position and shaking amplitude around the balance position, the shaking balance position and the shaking amplitude correspond to mean stress and stress amplitude in alternating stress respectively, and a relationship between shaking and stress is established, so that structure stress of the wind power tower drum can be reflected by monitoring shaking of the wind power tower drum, and the problem that methods for measuring stress with strain gages are limited by structure sizes and work environment of wind power tower drums is solved. Besides, the on-line monitoring method is convenient, practical, and applicable to on-line stress monitoring of large-scale wind power tower drum structures.

Belonging to the technical field of medium permeability determination, the invention in particular relates to a test device for determining the permeability of a large-scale single fracture medium under triaxial stress. The device provided by the invention includes: a hydraulic source, an oil distributor, a pipeline pump, a water source, a permeability measurement system, a data collector, a console and a fracture medium permeability test host. The device provided by the invention provides a solution to the technical problems that test devices for testing fracture medium permeability in the prior art can only measure small-scale medium objects and are difficult to realize accurate measurement of large-scale medium objects. The device not only can accurately measure the permeability of large-scale (meter scale) medium objects, but also can ensure the stability and continuity of input and output flow.

The invention discloses a frequency domain identification method and system of a sub / super synchronous coupling impedance model of an electric power system. The system comprises a disturbance signal generation module, a data acquisition module and an impedance model identification module. The disturbance signal generation module is used for generating disturbance signals and injecting the disturbance signals to a port of an electric power device. The data acquisition module is used for acquiring real-time voltage data and real-time current data at the port of the electric power device. The impedance model identification module is used for identifying the acquired voltage data and the acquired current data to obtain the sub / super synchronous coupling impedance model of the electric power system. The method and the system are advantageous in that the sub / super synchronous coupling impedance model of the electric power system can be completely measured; models corresponding to multiple sub / super synchronous frequencies can be continuously measured; operation is simplified to a certain degree; workload is reduced; large quantity of repeated work is avoided; a transmission function expression of a coupling model can be obtained through identification of the coupling model of multiple groups of discrete frequency points; analysis of vibration risks in the whole electric grid system is facilitated.

The invention discloses a simulation system for physical properties and digital attributes of a textile fabric and a measurement method. The simulation system comprises a computer system, fabric simulation software, a fabric physical property measurement device and a fabric scanning system, wherein the fabric simulation software is arranged in the computer system; the fabric physical property measurement device and the fabric scanning system are connected with the computer system separately; the computer system is provided with a data output port; and various physical data during fabric measurement and data during fabric scanning are subjected to operation work through the computer system. The real visual effect of the physical attributes of the garment fabric can be quickly and virtually shown, the technical problems of distortion and deficiency of various physical attributes of the garment fabric simulated by three-dimensional garment simulation software in the market at present are successfully solved, and the realistic design effects of various dresses, work clothes, underwear, three-dimensional embroideries and the like can be shown.

The invention discloses a measuring method for the current carrier concentration in solar energy level monocrystal silicon. The measuring method includes the following steps that (1), a series of p-type electronic grade monocrystal silicon and a series of n-type electronic grade monocrystal silicon are respectively selected as standard samples, the electrical resistivity and infrared absorption coefficients of the standard samples are respectively measured at the room temperature, and the corresponding current carrier concentration is converted according to the electrical resistivity; (2), according to measurement results in the step (1), an alpha lambda / lambda<2> and rho p<2> standard curve of the p-type monocrystal silicon and an alpha lambda / lambda<2> and rho p<2> standard curve of the n-type monocrystal silicon are respectively set up, wherein alpha lambda is the infrared absorption coefficients of the standard samples at the wavelength of lambda, and p and rho are the corresponding current carrier concentration and the corresponding electrical resistivity; (3), the electric conduction type of the solar energy level monocrystal silicon samples to be detected is determined, the electrical resistivity and the infrared absorption coefficients of the standard samples are respectively measured at the room temperature, and the current carrier concentration is obtained according to the corresponding standard curves in the step (2). The measuring method is easy, convenient and fast to use, high in accuracy, low in test cost and particularly suitable for the solar energy level monocrystal silicon, wherein the compensation effect exists in a substrate of the solar energy level monocrystal silicon.

The invention discloses a ship camber height difference measuring device and a measuring method. The measuring device comprises a magnetic supporting base, a round dial, a vertical short tube, a horizontal rule strip and a vertical rule strip. The measuring method includes the steps that the magnetic supporting base is placed on a deck surface, a sliding clamp on the horizontal rule strip is moved to enable a pointer II on the sliding clamp to move to the position of a scale value of a radius needing to be measured, the vertical short tube is rotated, numerical values pointed by a pointer III on the vertical rule strip are recorded when a pointer I is respectively positioned at the positions of values of multiple rotating angles, and a marker is made at the upper pointed end position of the deck surface. According to the measuring device and the measuring method, the height difference of cambers on the base installation deck surface can be measured simply, quickly and conveniently, the base cutting allowance can be obtained through simple calculation by means of data of the height difference, the current situation that during current construction, in order to ensure that an equipment base plane meets the requirement of flatness, the base allowance is cut constantly and repeatedly is changed, cutting precision is improved and workloads are relieved in the use process, and therefore the installation precision of an equipment base is improved.

The invention discloses an automatic elevator guide track gauge and perpendicularity measurer which comprises a controller, a bidirectional laser track gauge, a moving bracket, an adjusting bolt, a steel wire rope, a magnet, a digital display target and a laser light source. The automatic elevator guide track gauge and perpendicularity measurer can be connected with an elevator lift car for data measurement, analysis, transmission and storage, automatic measurement, calculation and analysis of elevator guide track gauge and perpendicularity are achieved, the measurement process is relatively rapid, simple, safe and reliable, and the working intensity of detectors is greatly alleviated.

A tennis net strap that both measures and holds center of tennis net at regulation height above court is described. Strap is of minimally stretching material and employs cam buckle with preferably a short secondary strap with hook-and-loop material as back up security measure. On opposite end of strap from buckle, a metal tab keeps strap end clean and from fraying. A single-end snap clip anchors strap to court. A primary measuring mark is located on strap near tab, which is aligned with slot in cam buckle to ensure strap is fastened at correct length. With cam buckle closed, strap is rotated until secondary mark on strap 36 inches from end of metal tab aligns with top of net, with tab just touching court surface. A third security measure is preferably employed in which now aligned areas on both sides of installed strap are fastened together through net.

The invention relates to an experimental device of a free surface vortex forming and evolving mechanism. The device comprises a cylinder, a sealed water tank, a micro pump, a flow adjusting valve and a water inlet buffer chamber, wherein the upper part of the cylinder is adhered to the water inlet buffer chamber; a resistance increasing sponge ring used for flow stabilization is arranged on the inner side of the wall of the cylinder; the bottom of the cylinder is connected with a water outlet pipe joint; the water outlet pipe joint is connected with a water inlet pipe joint of the sealed water tank through a rough pipeline; the micro pump is adhered to the bottom of the sealed water tank; a water outlet of the micro pump is connected with a flow control valve through a pipeline; the flow control valve is connected with a flow inlet of the water inlet buffer chamber through a four-way pipe joint; the four-way pipe joint is connected with another three flow inlets which are uniformly distributed on the water inlet buffer chamber along the circumferential direction through three three-way pipe joints; and the flow inlets which are uniformly distributed on the wall of the cylinder along the circumferential direction are communicated with the water inlet buffer chamber.

An embodiment of the invention discloses a fatigue level analysis method and device based on pulse characteristics, wherein the method comprises: acquiring a pulse data fatigue level classifier model through an initial first pulse data training classifier, wherein first pulse data includes a first fatigue level label; predicting a second fatigue level label corresponding to newly collected second pulse data according to the pulse data fatigue level classifier so as to obtain the second fatigue level label; determining a fatigue level corresponding to the second fatigue level label according to the second fatigue level label. The fatigue level analysis method and device based on pulse characteristics can be carried out by a user to judge and measure the fatigue level quickly and conveniently; therefore, fatigue level measuring accuracy is improved, and a portable fatigue level measurer is brought for users.

The invention relates to a method for detecting low-temperature brittleness of a zinc anode ribbon, which comprises the following steps: (1) determining a plurality of test temperature points, and preparing the corresponding specification and number of samples; (2) cooling the samples for heat preservation for 4 to 5 hours; (3) measuring the maximum bending diameter of the samples at a certain test temperature point; and (4) changing the temperature of a cooling medium to the other test temperature point within the test temperature range, measuring the maximum bending diameter of the samples at the temperature, and establishing a temperature (T)-maximum bending diameter (phi) database according to the maximum bending diameter under each test temperature point. The method is simple, easy to operate, and simple and direct and quick to measure; and the ductile-brittle transition temperature range of the zinc anode ribbon is judged quantificationally according to the database, and the method is visual and easy to understand, provides theoretical guidance for actual production and engineering application, and has important practical significance.

The invention discloses an indication angle testing system of a precision approach channel designator lamp and a testing process thereof, which comprises a camera and a support bar for supporting the camera, wherein the system further comprises a self-leveling level for searching the measuring horizontal reference, a computer which is used for the slope lamp image signal collection, light strength and color measurement and the camera control, a video capture board for collecting image signals, and a laser range finder for measuring the horizontal distance, wherein the camera is connected with the video capture board through a coaxial cable, the video capture board is connected to the computer, and the control port of the camera is connected with the computer through a control wire. The invention has the characteristics of high measuring precision, simple testing process and strong measuring function. The invention is applied to replace the traditional aircraft check, saves a great amount of expenditure for airfields, ensures the accuracy of a PAPI lamp, reduces accident rate, and meets the requirements of airfields to the detection cycle of the PAPI lamp, and is beneficial for the modern building of the airfield.

The invention relates to a temperature and pressure combined measurement system and measurement method. The system comprises a temperature and pressure probe, an optical fiber coupler connected with the temperature and pressure probe, a laser light source connected with the inlet of the optical fiber coupler through a fiber, a beam splitter mirror connected with the outlet of the optical fiber coupler through a fiber, and signal processing units arranged behind different light paths of the beam splitter mirror. The surface of the temperature and pressure probe is coated by a Zr3Y4O12: Eu and MFG mixed phosphor layer, wherein mass ratio of Zr3Y4O12: Eu and MFG in the Zr3Y4O12: Eu and MFG mixed phosphor layer is (800-2500):1. Compared with the prior art, the system and method have the advantages of capable of jointly measuring a temperature field and a pressure field in a non-contact mode, being high in measurement temperature (500-1000 DEG C) and being high in temperature and pressure measurement accuracy; by changing the shape of the temperature and pressure probe, the system can be suitable for temperature and pressure measurement under different environments without influencing the temperature field and the pressure field; and the system is wide in application range and suitable for measuring the temperature of an aero-engine or a ground gas turbine in a working state.

The invention relates to arrays with a plurality of capillaries being arranged in a plane and mechanically attached to the array, wherein the distance of adjacent capillaries is approximately 2.25 mm or an integer multiple thereof. At least one free end of each capillary projects from the array in such a way that the free ends of the capillaries may be simultaneously inserted into wells of a microwell plate.