63results about How to "Simple instrument structure" patented technology

An off-resonance photoacoustic spectrometric detection and analysis device consists of a photoacoustic spectrometric module (8). The photoacoustic spectrometric module (8) comprises a light source module (2-1), a photoacoustic signal generation module (2-2), an optical power measurement module (2-3) and a fault diagnostic analysis module (2-4). Optical signals generated by an infrared incoherence light source in the light source module (2-1) are focused by an ellipsoidal reflector to form a focused light beam, the focused light beam is modulated into light of specific frequency and wavelength by chopping blades of an optical chopper and optical filters and then transmitted to the photoacoustic signal generation module (2-2), and the fault diagnostic analysis module (2-4) calculates each gas concentration according to to-be-tested gas photoacoustic signals generated by irradiation, diagnoses faults and alarms. The off-resonance photoacoustic spectrometric detection and analysis device can be used for quantitative detection of gases such as SF6, CF4, SO2F2, SOF2, SO2, SF4 and H2O and is applicable to onsite online monitoring.

The invention provides a temperature measurement correction system and method for a thermal infrared imager. The system includes an infrared optical module, a plane black body and a high and low temperature box arranged in the thermal infrared imager, wherein a focal plane of the to-be-corrected thermal infrared imager is aligned with the plane black body through the infrared optical module, radiation of the plane black body is uniformly irradiated on the focal plane, a preset distance between the to-be-corrected thermal infrared imager and the plane black body is kept, the to-be-corrected thermal infrared imager is placed in the high and low temperature box for preheating, and subsequent calibration is performed after the temperature is stabilized. The system is advantaged in that the distance of a measured object is compensated by an optical system, influence of surface emissivity of the measured object and the environment temperature on temperature measurement is compensated by thecorrection method, the thermal infrared imager is made to be more adaptable to the measured object and the environment, gain and the bias effect of the thermal infrared imager on external radiation under different temperatures are accurately calibrated, a temperature measurement error caused by temperature change of an instrument in the temperature measurement process is avoided, an additional device such as a shutter is not needed for calibration, and the structure of the instrument is simplified.

The invention relates to an instrument and a method for precisely testing adsorbent, belonging to an instrument and a method for testing a single-component gas static state adsorption isotherm, a single-component gas static state adsorption isobar and other adsorbent characteristics and aiming at solving the problem that the instrument and the method existing in the prior art have high cost or limited application ranges. The testing instrument comprises an adsorption tank, an air intake adjusting valve which can be communicated with the adsorption tank and connected with the gas to be tested, a system pressure transducer communicated with the air intake adjusting valve, a compensation adjusting valve, a vacuum adjusting valve, a compensatory pressure transducer communicated with the compensation adjusting valve, a compensating tank of fixed volume and a single chip microcomputer electrically connected with the system pressure transducer and the compensatory pressure transducer. The method is a pressure compensating method adopting the testing instrument. The invention can be widely used for testing the performance of various industrial adsorbents or novel adsorbents like silica gel, molecular-sieve type activated carbon, and the like.

A device used for measuring concentration of optical velocity particle consists of LED and modulation circuit. It is featured as setting photoelectric diode detector in front of LED, amplifying signals by said detector then sending them to two low frequency band-pass filters, sending signals outputted by filters to computer through A / D conversion, calculating cross-correlation of two signals and their flow velocity by computer then calculating concentration of particle after signal is passed through two filters and is converted by A / D conversion.

The invention relates to a blazed fiber bragg gating demodulation-based micro-displacement sensor and a detection method and belongs to the technical field of photoelectric detection. The sensor consists of a wideband light source 1, an optical circulator 2, optical fiber links (31, 32, 33), fiber bragg gating 4 used for sensing, a double-arched beam 5, a base 6, a helix millesimal screw 7, a blazed fiber bragg gating 8 used for demodulation, a refractive index matching liquid groove 9, a columnar lens 10, an optical fiber array 11, a CCD photoelectricity prober 12, a signal processing unit 13 and a computer 14. The sensor is characterized in that a reflective spectrum signal of the fiber bragg gating 4 used for sensing is broadened under the action of the detected micro-displacement; the signal is sent to the optical fiber array 11 by the blazed fiber bragg gating 8 used for demodulation with a certain beam angle and is transmitted to the CCD photoelectricity prober 12; the error of the measurement caused by light intensity wave, optical fiber transmission loss and the like is avoided on the basis of a gauss fitting algorithm and by identifying the detected displacement corresponding to the facula size received by the CCD photoelectricity prober 12.

The invention relates to an ultraviolet double-wavelength absorbance detection device for trace liquid. The device is formed by connecting four parts which are a light source, a liquid core waveguide sample detection tank, a photoelectric detector and a control detection circuit by a light path and a line. The light source comprises two ultraviolet light emitting diodes with different wavelengths. The sample detection tank comprises a liquid core waveguide pipe, and the two pipe orifices of the liquid core waveguide pipe are opened and are used for leading in and leading out a solution to be analyzed. The liquid core waveguide pipe is provided with two turn areas used as an incident light coupler and an emergent light coupler of the liquid core waveguide sample detection tank. The control detection circuit lightens the two light emitting diodes of the light source in a time-sharing way, the intensity of light penetrating through the liquid core waveguide sample detection tank is respectively detected at each lightening moment by the detector, and the absorbance of the liquid to be detected under two wavelengths is obtained. The invention realizes the detection of the ultraviolet double-wavelength absorbance of the trace liquid and has high detection sensitivity of the device, little consumption quantity of a sample, simple and reliable detection operation, low manufacturing cost of the device and easy miniaturization and integration.

The present invention relates to a sizing wear resistant meter, which consists of a control part, a transmission part and a detection part, wherein the control part includes a speed regulator, the transmission part includes a speed regulating motor and a crank connecting rod slide block mechanism which is composed of a crank, a connecting rod and a slide block, and the detection part includes a sizing guiding frame. The present invention is characterized in that the crank of the crank connecting rod slide block mechanism has a disc configuration, the central hole of which is fixed and connected with the output axle of the speed regulating motor, and one to five isodiametric connecting holes which can be hinged with the connecting rod are also arranged along the radius direction of the central hole; the sizing guiding frame of the detection part is a rectangular sizing guiding frame consisting of four bank rods which are arranged rectangularly and fixed and arranged between a front wall plate and a rear wall plate which are symmetrical, and the bottom of the sizing guiding frame is fixed and connected on the bottom seat of the sizing guiding frame. The wear resistant meter of the present invention practically simulates the stress wearing condition of warp yarn in the weaving process.

The cross section contour detecting method for steel plate and steel belt includes the following steps: guiding the measured body into the measuring instrument and making the measured body move relatively to the instrument; measuring the varying thickness of the measured body with the instrument and converting the thickness variation into electric signal; and collecting the displacement signal with computer to obtain the cross section contour curve of the measured body. The measurement method is continuous, precise, simple and low in cost.

The invention belongs to the technical field of petroleum and gas and ecological environments, and particularly relates to a continuous high pressure oxidation experimental device and method for simulating natural gas hydrate gas release in the seabed environment. The device mainly comprises a generation-decomposition unit, a gas continuous high pressure oxidation unit and a data acquisition and processing unit. The generation-decomposition unit and the gas continuous high pressure oxidation unit are connected through a gas mass flow meter and a precise pressure regulating valve. The gas continuous high pressure oxidation unit comprises a solid system, a liquid system, a constant-temperature water bath tank and a vacuumizing system. The solid system comprises a plurality of reaction cylinders. The top of each front reaction cylinder is connected with the bottom of the corresponding rear reaction cylinder. The liquid system comprises a liquid storage tank, a stirring tank, a constant-flux pump and a reaction tank. By means of the experimental device and method, natural gas hydrate can be decomposed to release gas under different experimental conditions so that anaerobic / aerobic oxidation effects in bottom sediments or seawater can be achieved.

The invention discloses an electronic refrigeration atmosphere pre-concentrator. The electronic refrigeration atmosphere pre-concentrator comprises a 1-counter-8 eight-way valve, a six-way valve, two electromagnetic valves, a three-way electromagnetic valve, a needle-shaped regulating valve, a mass flow rate controller, a pressure sensor, a collector (1), a collector (2) and a cold focuser (3) which are sequentially connected, wherein a three-stage VOC refrigeration collection mode is adopted; the collector 1 is a stainless steel tube with the diameter of 1 / 8 inch, which is filled with glass beads; the collector (2) is a stainless steel tube with the diameter of 1 / 8 inch, which is filled with an adsorbent; the cold focuser (3) is a stainless steel tube with the diameter of 1 / 16 inch, which is filled with an adsorbent, and the cold focuser (3) is adsorbed by the adsorbent, and is heated up to 240 DEG C from -20 DEG C at the temperature rise velocity of 2250 DEG C / min above, so that VOC is rapidly injected into a GC (gas chromatograph) or a GC-MS (gas chromatography-mass spectrometry). The aim of concentrating VOC can be achieved without taking liquid nitrogen as a refrigerant.

The invention relates to a portable lead ion concentration analysis meter with a disposable sensor, which is used for the detection of lead ion concentration in blood or urine. The analysis meter comprises a detecting instrument, a disposable sensor and a correction card, wherein the detecting instrument is provided with a sensor interface, a correction card interface, a display screen, buttons, and a communication serial port which needs to be connected with a computer; the disposable sensor comprises a substrate, working electrodes, auxiliary electrodes, reference electrodes, insulating layers and covering resins, the working electrodes, the auxiliary electrodes and the reference electrodes are positioned on the substrate, and the covering resins are positioned on the insulating layers positioned on the electrodes; and the correction card is used for correcting parameters detected by the detecting instrument. The invention has the advantages that the analysis meter can automaticallycomplete the processes of parameter setting, collection, dissolution, data collection, background correction, characteristic potential judgment, concentration calculation, sensor correction, result display, and the like which are needed by the entire detection, thus the analysis meter avoids the error caused by human elements during the detection process of the traditional electrochemical method;and besides, the analysis meter has cabinet configuration and low cost and is suitable for basic medical institutions.

The invention provides a six-dimensional seismic wave measuring device based on a composite interferometer. The device comprises an optical fiber sensing shell 12, a sensing module 13, a composite interferometer 14 and a photoelectric conversion module 15, a data acquisition processing module 16; a light path of the composite interferometer 14 mainly comprises light source input; a circulator 143,couplers 144, 146, 147, 148, 148, 149, 149. a polarizer 142, a wavelength division multiplexer 145. A Mach-Zehnder interferometer and Sagnac interferometer composite optical structure is adopted, theinfluence of temperature on measurement is eliminated through double polarization maintaining optical paths, six-dimensional measurement of seismic waves is achieved through a mandrel type integratedstructure, and the miniaturization design of the optical fiber seismometer is achieved.

The invented signal acquisition circuit is formed from sequentially-connected signal acquisition electrode, amplification filtering circuit and A / D conversion circuit, its microprocessor is respectively connected with A / D conversion circuit being in signal acquisition circuit, memory and output port, and its power supply is respectively connected with signal acquisition circuit, microprocessor, memory and output port. In the invented microprocessor a physiological signal analysis network transmission management program is set, its output port is connected with input port of mobile telephone for creating on-line connection with wireless interface of mobile network system so as to can provide continuous monitoring or treatment in 24 hr, for patient. It can timely automatically make signal analysis and identification, and can make alarm operation.

The invention provides an integrated sampling calibration constant-pressure alkalization measurement device. The device comprises a measuring cell, wherein a measuring assembly is arranged in the measuring cell, an outlet of the measuring cell is communicated with a sewage discharge cell through a pipeline, an inlet of the measuring cell is communicated with an alkalization solution pipe, the alkalization solution pipe is sequentially communicated with a water sample injection pipe and a calibration liquid bottle, and a constant-pressure sample injection assembly is arranged between the watersample injection pipe and the alkalization solution pipe; a sample injection valve is arranged on the water sample injection pipe, and a calibration liquid valve is arranged at an outlet of the calibration liquid bottle; the alkalization solution pipe between the constant-pressure sample injection assembly and the measuring cell is communicated and connected with a pressure-stabilizing alkalization gas assembly, and the length of the alkalization solution pipe between the pressure-stabilizing alkalization gas assembly and the measuring pool is 60-80cm. According to the invention, the problemsof integrated alkalization and integrated structure layout of sample water and calibration solution are solved, so that the flow path is simpler, the alkalization effect is more obvious, the flow fault and maintenance cost are greatly reduced, the reliability of the instrument is greatly improved, and the service life of the instrument is greatly prolonged.

The invention relates to a downhole optical fiber imaging camera mainly comprising a remote transmission unit, a video compression unit, a storage unit, an imaging unit and a lighting unit, wherein the imaging unit comprises a front view camera and a side view camera, the two cameras have corresponding light sources, an in-well image is converged into an imaging optical fiber by a lens, the in-well image is restored on a photosensitive chip through the lens at the other end of the optical fiber, the photosensitive chip outputs a front view image and a side view image after performing digitization, a video compression module performs video compression on the images, the compressed video images are transmitted by the video compression unit to a ground system through a logging cable in the form of digitized images at a speed of two frames per second, and the digitized images are stored in the storage unit at a speed of 25-30 frames per second and are read out on the ground after the instrument is lift out from the wellhead. Due to the use of the imaging optical fiber, the photosensitive chip is away from a heating light source, which is conducive to improving the working temperature of the instrument, and moreover, the volume of the side view camera is further reduced, so that the instrument structure is further simplified.

The invention relates to a gas conduction or liquid conduction easy plugging power supply male joint and a power supply female joint jointed with same, and refers to a power supply connector; the power supply male joint comprises a gas conduction tube I, an insulation layer I, an anode conductor I, an insulation layer II, and a cathode conductor I; the power supply female joint comprises a gas conduction tube II, an insulation layer III, an anode conductor II, an insulation layer IV and a cathode conductor II; when the power supply male joint and the power supply female joint are jointed, the two gas conduction tubes can completely joint so as to form a smooth gas guiding or liquid guiding pipeline, thus satisfying instruments needing electric conduction, gas conduction or liquid conduction; the instrument using the power supply male joint and power supply female joint is simpler in structure, easier to use, and lower in cost.

The invention relates to a light-duty beam splitter with a grid rib structure, belongs to an optical beam splitter in the technical field of spectrum detection and analysis technologies, especially toa mini beam splitter based on a beam splitting window structure, and solves the problems that a present beam splitter which is large and heavy cannot satisfy the application requirement of mini devices. The beam splitter is composed of a grid rib, a light splitting window and a light splitting film, the segments the space of the beam splitter to form a light splitting window array, the light splitting window array is in the upper surface of the light splitting window or the upper surfaces of the light splitting window and the grid rib, and the grid rib supports the light splitting film; the horizontal width of the grid rib is the same with or different from that the vertical width, the horizontal width of the light splitting window is the same with or different from that the vertical width, and the duty ratio of the light splitting window in the horizontal direction is the same with that in the vertical direction; the width of the grid rib ranges from 1nm to 100cm, and the width of the light splitting window ranges from 1nm to 100cm; the thickness of the grid rib ranges from 1nm to 10cm, and the thickness of the light splitting window ranges from 1nm to 10cm; and the profile of the grid rib is a single-side rectangle, a single-side parallelogram, a single-side trapezoid, a double-side rectangle, a double-side parallelogram or a double-side trapezoid.

The invention discloses a novel mechanical material level switch, and belongs to the technical field of material level control. The switch includes a shell body, a micro motor, a micro switch, a rotary shaft and a detection paddle, wherein the shell body is internally provided with the micro motor, and the micro motor is connected with one end of the rotary shaft outside the shell body through a connecting sleeve, and meanwhile, the other end of the rotary shaft is connected with the detection paddle through a reset spring; the shell body is also provided with a high-light dichromatic status indicator lamp, and the high-light dichromatic status indicator lamp is connected to a status indicator amphenol connector positioned inside the shell body. The novel mechanical material level switch serves as a display with a light in a shell body section of a leakproofness and detection unit of a product testing part, and has the advantages of excellent properties of high temperature resistance, dust proofing, corrosion prevention, impact resistance and pressure resistance, a simple instrument structure, no complex electrical circuits, reliable operation, no requirement of debugging after installation, ease of maintenance, anti-interference of environmental influences, continuous long-time running and a wide application range.

The invention relates to a magnetism separating device. The magnetism separating device comprises a cleaning turnplate mechanism, a magnet structure, a mixing mechanism and a cleaning needle mechanism, and the cleaning turnplate mechanism, the mixing mechanism and the cleaning needle mechanism are all connected with a controller. The magnetism separating device has the advantages that the magnet structure is fixedly located on the inner side face of a reaction cup, and the adsorption area and the adsorption time of a magnet block can be guaranteed through the adsorption position of the magnet structure; the mixing mechanism is synchronously driven by a rotation stepping motor and a rotation synchronous belt, synchronous rotation mixing of cleaning fluid in the multiple reaction cups can be achieved, and the washing efficiency is improved greatly; under the condition that the cleaning effect is guaranteed, the magnetism separating device accelerates the detecting speed, simplifies the instrument structure and has broad prospects.

The invention discloses an ultrasonic mass flowmeter. The ultrasonic mass flowmeter comprises a liquid flowing pipe, at least one group of ultrasonic sensors arranged on the pipe, and a measurement host, wherein the measurement host controls the ultrasonic sensors to transmit and receive signals to obtain mass and flow values; the ultrasonic sensors are composed of ultrasonic transmitters and ultrasonic receivers, which are on the upper side and the lower side of the pipe respectively and located inside a plane passing through the axis of the pipe. According to the ultrasonic mass flowmeter, with the high-frequency characteristics, ultrasonic waves can complete high-precision measurement and are high in mass and flow measurement precision. The ultrasonic mass flowmeter is simple in device structure, namely, is composed of the sensors and the host without complicated mechanical parts. Meanwhile, the ultrasonic mass flowmeter is applicable to mass and flow measurement of various kinds of fluid, thereby being diversified in measured objects. Also, the ultrasonic mass flowmeter can achieve comprehensive analysis of various parameters of fluid to be measurement and can measure the information of mass, flow, density, temperature, energy and the like simultaneously.

An automatic polarimeter based on a non-Radiant modulator of a silicon photocell, characterized in that: it comprises a light source (1), an achromatic condenser lens (2) is installed on the outgoing light path of the light source (1), and the light is The chromatic aberration condenser lens (2) exits and enters the polarizer (3), the sample tube (4) is installed on the exit light path of the polarizer (3), and the incident end of the sample tube (4) is installed with an interference filter (5), the light is injected into the analyzer assembly (6) after passing through the sample in the sample tube (4), and the silicon photocell assembly (7) is installed on the outgoing light path of the analyzer assembly (6); the present invention adopts a silicon photocell detection, realize the miniaturization of the polarimeter, and make the instrument structure simple, the reliability improved, and the cost reduced.

The invention provides a string vibration period experiment instrument with a vibration motor and an electric vibration tuning fork as double vibration wave sources. The string vibration period experiment instrument with the vibration motor and the electric vibration tuning fork as the double vibration wave sources aims to the solve the technical problems that an existing string vibration experiment instrument is complicated in equipment structure, a dead zone exists during an experiment, and the demonstration effect is poor. The string vibration period experiment instrument comprises an experiment instrument body. A base is arranged at the bottom of the experiment instrument body, and a vibration motor assembly is installed on the experiment instrument body. The vibration motor assembly is installed on the head portion of the electric vibration tuning fork through a fixing flat plate. The vibration motor is installed in the vibration motor assembly. An eccentric block is installed on the right side of an outer rotating shaft of the vibration motor. A direct-current power source frequency measurement instrument is installed on the left side of the base. A voltage adjusting and frequency adjusting power source and a vibration motor frequency measurement instrument are installed on the direct-current power source frequency measurement instrument. The voltage adjusting and frequency adjusting power source is provided with a voltage adjustment and frequency adjustment alternation switch, a power switch and the like. The vibration motor frequency measurement instrument is provided with a power supply switch, a frequency switch and the like. When the string vibration period experiment instrument is used, through the steps of power source connection, voltage adjustment and the like, the string vibration frequency is obtained by measuring the vibration frequency with the vibration motor as the wave source finally. The double vibration wave sources can be mutually checked and compared. The string vibration period experiment instrument with the vibration motor and the electric vibration tuning fork as the double vibration wave sources has the advantages that the structure is reasonable, an operation method is easy to implement, and the demonstration effect is remarkable.

The invention relates to a tony red detection device and method based on ultraviolet curing. An illuminating light path of the device comprises an area-array LED array at the ultraviolet band, an imaging lens, a beam splitter prism, a first diaphragm and an objective lens. An imaging light path comprises a mixture of food to be detected and UV glue, an objective lens, a first diaphragm, a beam splitter prism, a tube mirror, a second diaphragm, a scanning lens, a two-dimensional scanning galvanometer, a focusing lens, a pinhole and a detector. The method includes the steps that the mixture of food to be detected and UV glue is obtained first; then all LEDs in the area-array LED array are lightened in sequence, a plurality of images are obtained, and accordingly C is calculated; at last, the conclusion about whether tony red is contained or not is drawn. It is discovered that after the tony red is combined with the UV glue, an optically-anisotropic crystal structure can be generated, and the crystal can have an obviously-different light reflecting character under the radiation of ultraviolet light at different angles. On this basis, the tony red detection device and method based on ultraviolet curing are disclosed, the structure of the device is simple, the detection process is easy, and the process can even be operated by common people.

The invention relates to the field of Western blot experimental equipment and specifically relates to a multi-membrane Western blot hybridization instrument and an experimental operation method thereof. The instrument comprises a bottom shell and a vertical shell, wherein a transfer positioning device is arranged in the vertical shell; a shaking table device is arranged in the bottom shell; a hybridization trough group is arranged at the upper part of the shaking table device; the hybridization trough group comprises: an independent closed liquid trough, an anti-hybridization trough I, an elution trough and an anti-hybridization trough II; and a liquid inlet / discharge device is arranged on the elution trough. A PVDF membrane after membrane transfer is immersed in the closed liquid trough,the anti-hybridization trough I, the elution trough and the anti-hybridization trough II sequentially through the transfer positioning device, and then returns to the elution trough to be subjected tothe hybridization process. With the scheme, according to the multi-membrane Western blot hybridization instrument and the experimental operation method thereof provided by the invention, the instrument structure is simple, the experimental operation is convenient, simultaneous experiments on multiple membranes are supported, the working strength of experimenters can be relieved, the working efficiency is improved, and the experimental cost is lowered.

The invention belongs to the technical field of food detection, and specifically relates to a Sudan red ultraviolet curing detection device and method; the illumination light path of the device includes a linear array LED array in the ultraviolet band, an imaging lens, a beam splitting prism, a diaphragm and an objective lens; the imaging light path includes a Food and UV glue mixture, objective lens, diaphragm, beam splitter, tube mirror, linear array pinhole array and linear array image sensor; this method first obtains the food to be tested and UV glue mixture, and then sequentially lights up the linear array LED array Each LED in the LED can get multiple images, and by calculating the gray value, it can be concluded whether it contains Sudan Red; the present invention finds that after Sudan Red is combined with UV glue, it will produce an optically anisotropic crystal structure, Under the irradiation of ultraviolet light at different angles, the crystal will have significantly different reflective characteristics. Based on the above characteristics, a Sudan red ultraviolet curing detection device and method are disclosed. The instrument structure is simple, the detection process is simple, and ordinary people can operate it. technical advantages.

The invention discloses an integrated device with the integration of an ion chromatography electrochemical inhibitor and a resistance detection pool, relating to an electrochemical inhibition and resistance detection pool. The integrated device with the integration of the ion chromatography electrochemical inhibitor and the resistance detection pool integrates the electrochemical inhibitor and a potential different detection pool and has higher detection sensitivity and higher accuracy. The integrated device with the integration of the ion chromatography electrochemical inhibitor and the resistance detection pool comprises a first cathode chamber, a second cathode chamber, a public anode chamber, an inhibition chamber and a detection chamber, wherein a first cathode is arranged in the first cathode chamber, a second cathode is arranged in the second cathode chamber, a public anode is arranged in the public anode chamber, cation exchange materials are filled in the inhibition chamber, a pair of detection electrodes are arranged in the detection chamber, a flowing solution circulation channel is arranged between the inhibition chamber and the detection chamber, an ion exchange film is respectively arranged between the first cathode chamber and the inhibition chamber, the second cathode chamber and the detection chamber, the public anode chamber and the inhibition chamber as wellas the public anode chamber and the detection chamber, the public anode and the first cathode are externally connected with a first constant current source, and the public anode and the second cathode are externally connected with a second constant current source.

The present invention discloses a four-point cylindricity measurement method based on singularity rate analysis. The method comprises the steps of: measuring multi-circle measurement signals collectedthrough axial three-sectional four sensors to obtain the shape of the section of a measured cylinder and shafting runout and mixed signals of straight line error motion of a measurement rack; according to a prior section shape signal period, employing the singular value decomposition method to obtain fundamental wave signals, and performing singularity rate spectral analysis for residual signalsto measure the section runout period; and employing addition of measurement signals of diametrical sensors and a sequence vector three-point straightness error separation method to remove various error motions in the measurement process to obtain an actual section shape and obtain relative radius, the unrounded degree and the least-squares centre vector of each section circle, and fitting and measuring the space bending middle line of the measured cylinder to achieve measurement reconstruction of the silhouette of the cylinder defined based on the international standard. The number of the sensors is small, the antijamming capability is high, and the measurement system is simple in structure.

The invention relates to a tony red detection device and method based on ultraviolet curing. An illuminating light path of the device comprises an area-array LED array at the ultraviolet band, an imaging lens, a beam splitter prism, a first diaphragm and an objective lens. An imaging light path comprises a mixture of food to be detected and UV glue, an objective lens, a first diaphragm, a beam splitter prism, a tube mirror, a second diaphragm, a scanning lens, a two-dimensional scanning galvanometer, a focusing lens, a pinhole and a detector. The method includes the steps that the mixture of food to be detected and UV glue is obtained first; then all LEDs in the area-array LED array are lightened in sequence, a plurality of images are obtained, and accordingly C is calculated; at last, the conclusion about whether tony red is contained or not is drawn. It is discovered that after the tony red is combined with the UV glue, an optically-anisotropic crystal structure can be generated, and the crystal can have an obviously-different light reflecting character under the radiation of ultraviolet light at different angles. On this basis, the tony red detection device and method based on ultraviolet curing are disclosed, the structure of the device is simple, the detection process is easy, and the process can even be operated by common people.