187results about How to "Low stability requirements" patented technology

The invention discloses a common optical path combined optical field spectral imaging method and a common optical path combined optical field spectral imaging device. Target radiation information is projected into and passes through a main lens, after being modulated by an optical filter array arranged in the main lens, the target radiation information is divided by a beam splitter prism so as to obtain two optical paths, namely, a transmission optical path and a reflection optical path, wherein the transmission optical path realizes high spectral resolution optical field imaging with a detector A through a microlens array, the reflection optical path directly conducts high spatial resolution panchromatic imaging through a detector B, the high spectral resolution optical field imaging information and the high spatial resolution panchromatic imaging information are sent by the detector A and the detector B to a computer for image registration and reconstitution, and the high spatial resolution and high spectral resolution image is obtained by adopting a multi-source data fusion rule. The device has the advantages of simultaneously obtaining the complete spectrum image information and high spatial resolution image information of the target, having a simple structure and light weight, and being miniaturized.

The invention relates to parallel complex frequency domain optical coherence tomography imaging method and system, wherein the method comprises the following steps of: on the basis of the parallel complex frequency domain optical coherence tomography imaging method, replacing a reference plane reflector of an interference reference arm with an inclined reflection grating, and enabling the first-level diffraction light of incident reference light to reversely return along an original incident light path, thereby leading linear space phase modulation in a two-dimensional frequency domain interference strip along the direction of parallel detection, which is obtained by a two-dimensional photoelectric detector, i.e. leading a spatial carrier in the two-dimensional frequency domain interference strip; then carrying out Fourier transformation on the two-dimensional frequency domain interference strip containing the spatial carrier along the direction of parallel detection, next obtaining a two-dimensional complex frequency domain interference strip sequentially through the processes of filtration trough a frequency domain filter window, coordinate transformation and the Fourier transformation along a frequency spectrum direction, and finally obtaining a chromatogram of an object to be measured through the Fourier transformation along a light frequency direction. The invention has simple structure and high imaging speed, and the chromatogram of the object to be measured can be obtained by only needing exposure for one time.

The invention discloses a method for preparing magnetic composite nanoparticles with a core-shell structure. In the method, electrostatic self-assembly and seeded emulsion polymerization are combined, wherein the electrostatic self-assembly is used to synthesize particles with the core-shell structure first and then emulsion polymerization is performed by using the particles with the core-shell structure seeds and using an initiator to prepare the magnetic composite nanoparticles with the sandwich core-shell structure which has three or more layers. The magnetic composite particles prepared by the method have a multi-layer sandwich core-shell structure, wherein in the structure, the core is a polymer microsphere, a Fe3O4 magnetic particle layer is in the middle, and different polymer layers are covered outside. The prepared particles have stable structures, strong and uniformly-distributed magnetism, smooth surfaces, controllable sizes, high stability and low cost, the thicknesses of the covering layers of the prepared particles can be controlled by nanoscale, and the adaptability of the prepared particles is high. Particles with specific surface groups can be prepared according to requirements and can be used in fields of biochemical separation, targeting preparation, immobilized enzyme, immunoassay, catalysis study and the like.

The invention discloses a comparison type calibration method for a dynamic measurement system, wherein a standard transducer and a calibrated transducer are used for comparison and calibration testing, the standard transducer and the calibrated transducer are arranged together, so as to measure a same physical quantity simultaneously, and then the uncertainty caused by the repeatability of the dynamic measurement system is assessed by a statistical analysis method. The scheme of the invention is widely used, is easy to operate and can ensure the uniformity of calibration test dynamic sources at different times.

A method and apparatus for measuring at least one polarization-related characteristic of an optical path (FUT) uses a light input unit connected to the FUT at or adjacent a proximal end of the FUT anda light output unit connected to the FUT at or adjacent its proximal or distal end. The light input unit injects into the FUT at least partially polarized light having a controlled state of polarization (I-SOP). The output light unit extracts corresponding light from the FUT, analyzes and detects the extracted light corresponding to at least one transmission axis (A-SOP), and processes the corresponding electrical signal to obtain transmitted coherent optical power at each wavelength of light in each of at least two groups of wavelengths, wherein the lowermost (lambda 1) and uppermost (lambdau) said wavelengths in each said group of wavelengths are closely- spaced. A processing unit than computes at least one difference in a measured power parameter corresponding to each wavelength in awavelength pair for each of the at least two groups, the measured power parameter being proportional to the power of the said analyzed and subsequently detected light, thereby defining a set of at least two measured power parameter differences; computes the mean-square value of said set of differences; and calculating the at least one polarization-related FUT characteristic as at least one predetermined function of said mean-square value, the predetermined function being dependent upon the small optical frequency difference between the wavelengths corresponding to the said each at least said two pairs of closely-spaced wavelengths.

The invention belongs to the technical field of refrigeration and cold accumulation, and discloses an absorption-mechanical compression coupling refrigeration and cold accumulation system. The absorption-mechanical compression coupling refrigeration and cold accumulation system comprises an absorption bed, a desorbing valve, a cooler, a compressor, a condenser, a high-pressure liquid-storage tank, a throttling valve, a low-pressure liquid-storage tank, an evaporator and an absorbing valve. An absorption bed heat exchanger is arranged in the absorption bed; an absorbing agent is filled in the absorption bed; the outlet of the absorption bed is connected with the inlet of the desorbing valve; the outlet of the desorbing valve is connected with the inlet of the cooler; the outlet of the cooler is connected with the inlet of the compressor; the outlet of the compressor is connected with the inlet of the condenser; the outlet of the condenser is connected with the inlet of the high-pressure liquid-storage tank; the outlet of the high-pressure liquid-storage tank is connected with the inlet of the throttling valve; the outlet of the throttling valve is connected with an inlet of the low-pressure liquid-storage tank; the outlet of the low-pressure liquid-storage tan is connected with the inlet of the evaporator; the outlet of the evaporator is connected with the inlet of the absorbing valve; and the outlet of the absorbing valve is connected with the inlet of the absorbing bed. With the adoption of the absorption-mechanical compression coupling refrigeration and cold accumulation system, low-grade heat source can be utilized to realize cold accumulation without cold lass, so that the power consumption of the system and the operation cost are obviously reduced.

The invention relates to a video presenting method for an intelligent mobile terminal, the video presenting method being characterized by comprising: when the intelligent mobile terminal shoots video, recording displacement and / or rotation information of the intelligent mobile terminal during the shooting process, and then storing the displacement and / or rotation information of the intelligent mobile terminal during the shooting process together with a shot video file; when the intelligent mobile terminal plays the above-mentioned video file, recording the displacement and / or rotation information of the intelligent mobile terminal during a watching process, and if the displacement and / or rotation information during the watching process is matched with the displacement and / or rotation information during the shooting process, playing the above-mentioned video file. According to the video presenting method for the intelligent mobile terminal, besides audio and video information, the displacement (rotation) information is also stored when shooting the video, so that a viewer can experience the video from another new media dimensionality; through the delivered displacement and / or rotation information, the immersion of the viewer when watching the video is improved due to the displacement and / or rotation actions of the viewers synchronous with the video maker.

The invention discloses a polarization shift keying demodulation method and a system. The method comprises the steps of: splitting a single-frequency continuous laser wave beam in an adjusted polarization state into a horizontal polarized light wave beam and a vertical polarized light wave beam which are orthogonal to each other, and conducting polarization shift keying modulation to one light wave beam to form a polarization shift keying modulated light wave beam; keeping the polarization state of the other light wave beam to be unchanged and using the other light wave beam as a reference light wave beam for the polarization shift keying modulated light wave beam; combining the polarization shift keying modulated light wave beam with the reference light wave beam, successively conducting power amplification, filtration and transmission, filtering carrier signals, converting into light current, then converting into light voltage and judging in a voltage comparator to obtain data corresponding to polarization shift keying modulation signals. By using the polarization shift keying demodulation method and the system, matched dynamic polarization control is not required during demodulation judgment at a receiving end, a transmitting end is not required to conduct differential encoding to the data and the complexity of the transmitting end is reduced; and a local light source is not required, the requirements on the accuracy and stability of a light path are reduced and the cost is saved.

This invention discloses a light-emitting diode lighting circuit, which comprises light-emitting diode array and the constant current source circuit, characterized in that it will decrease the stability requirement of the power through the current stabilization function of the constant current source, by which it need not use high energy consumption current-limiting resistance when connecting direct current power supply; when connecting alternating current power, it makes the light-emitting diode working normally only need to use the simple electric rectification scheme. The invention also discloses a circuit made of discrete component, which can realize constant-current and alternating current rectification scheme.

The invention relates to a method and system of non-scanner impulse modulating three-space imagery. Impulse laser emits optical pulsing light testing scene; reflected light is inputted into receiver through image system and its output is connected with video camera set; the output of video camera set is connected with image handling device; one of modulating signal controller controls impulse laser or probing laser impulse; while another one controls functional light receiver set and video camera set and transmits the signal to image handling device at the same time. The gain of functional light receiver is time variable function. It uses intensity image of at least two laser impulses light with different intensity or the gains of functional receiver as different time variable function, then generates three-space imagery by computing. The range-measuring system doesn't have scan parts.

The invention discloses a transient absorption spectrometer. The transient absorption spectrometer comprises a light source module, a beam splitter, two sets of optical delay lines, an optical lens set and a spectrometer, wherein one set of the optical delay lines is a short-stroke optical delay line and is used for realizing sub-10-femtosecond optical delay time resolution, and the other is a long-stroke optical delay line for achieving optical delay times greater than 16 nanoseconds. A laser beam emitted by the light source module is divided by the beam splitter into pump light and detectionlight, after time delay of the detection light by the two sets of optical delay lines connected in series, the detection light after time delay and the pump light are focused through the optical lensset at a to-be-tested sample, and the detection light transmitted through the to-be-tested sample is subjected to signal acquisition by the spectrometer. The transient absorption spectrometer is advantaged in that advantages of sub-10-femtosecond ultra-high time delay resolution and the nanosecond ultra-long time delay window are both realized, and limitations of the optical delay lines to systemtime resolution capability and the measurement time window in a traditional commercial transient absorption spectrometer are eliminated.

The invention relates to an upper rectification phosphorescence immune chromatographic test paper testing system which comprises: the lighting system comprises an exciting light source and an optical fiber beam, a collimation lens, a dichroic mirror and a front mirror group on the output light path of the exciting light source, wherein the test paper is on the object plane of the front mirror group; the angle between the reflecting side of the dichroic mirror and the light shaft is 45 deg.; the imaging system is formed by a front mirror group with the same light shaft, a dichroic mirror, a light filter and a rear mirror group; the phosphorescence image receiver is CCD which is on the image plane of the rear mirror group; the output end of CCD is connected with the data collecting circuit which is connected with a control system.

The invention discloses a differential vibration isolation type MEMS (micro-electromechanical system) vector hydrophone and solves the problems of the conventional elastic vibration isolation structure that sound scatters, amplitude decreasing only works on special frequency band noise and structure is poor in stability and reliability. The differential vibration isolation type MEMS vector hydrophone comprises a silicon base frame, cantilevers, a central connector, an upper minitype cylinder and a lower minitype cylinder. The minitype cylinders are bonded symmetrically. Eight strain varistors are formed on each cross cantilever. During operation, vibration of a platform acts on the minitype cylinders in the inertia force manner, and the minitype cylinders generate equal and reversed torques; a voice signal generates a different-mode signal through a sealing structure and acts the minitype cylinders, and the minitype cylinders generate different-mode torques. Based on the common-mode rejection characteristic and the different-mode output characteristic, vibration is damped. The different vibration isolation type MEMS vector hydrophone is simple and reliable in structure, effective in damping and unaffected by vibration sources and vibration frequency.

The invention discloses an onsite thermal property testing method under the condition of a non-constant power. The trend of a heating power or cooling power changing with time is analyzed under the condition of power instability such as the interruption of a power supply and large fluctuation of voltage, and by dividing the non-constant power into a plurality of sections in terms of time, wherein, the power of each section is comparatively constant (the power can be considered as zero when heating or cooling are interrupted); the heat-transfer process of buried pipes is considered to undergo a plurality of step heating flux actions which are further disintegrated into a superposition of a plurality of thermal pulses; linear superposition principle is adopted for analyzing and a mathematical model is established; and ground thermal property parameters can be obtained by integrating the mathematical model with a parameter estimation method and other methods.

An optical particle corrector with a straight optical axis for eliminating color and aperture aberrations in optical particle lenses includes multipole elements in the form of electric and / or magnetic quadrupole and octupole elements. There are at least twelve quadrupole elements and ten octupole elements, in which three quadrupole elements and two octupole elements are assembled into a group. These groups are arranged successively along the straight optical axis, in which a first symmetrical plane is defined between the first and second groups, a second symmetrical plane is defined between the second and third groups and a third symmetrical plane is defined between the third and fourth groups. The multipole elements from one group to another correspond to each other in pairs, in which the multipole elements of the corresponding following group are positioned in reverse order along the straight optical axis in comparison with the corresponding multipole elements of the preceding group. The structure and refractive powers of the multipole elements that correspond to each other are mirror-symmetrically configured relative to the corresponding symmetrical plane between the groups. At least two of the quadrupole elements generate electric-magnetic quadrupole fields, in which the quadrupole element are, preferably, arranged in a mirror-symmetrical manner relative to the second, or to all, symmetrical planes. An additional octupole element is arranged in the first and third symmetrical planes. The corrector enables the transmission of extremely large image fields, while the optical quality remains the same due to the fact image aberrations outside the axis can be corrected.

The invention belongs to the field of satellite communication and satellite navigation technologies and discloses a low-orbit satellite radio ranging signal-based single-star positioning and time service method. According to the method, a non-iteration method is used to solve the approximate coordinates and clock skew of a receiver; on the basis of the approximate coordinates and clock skew of thereceiver, an iteration method is adopted to solve the approximate coordinates and clock skew parameter of a user; and an equation ill-conditioned problem is solved through a regularization method, sothat the stable and reliable three-dimensional coordinates and clock skew of the user can be obtained. With the method of the invention adopted, the cost and power consumption of the receiver can bedecreased; and it only needs the receiver to simultaneously receive ranging signals from a low-orbit satellite at a plurality of time points, so that the three-dimensional coordinates and receiver clock skew of the user can be accurately solved. The low-orbit satellite radio ranging signal-based single-star positioning and time service method is applied to the low-cost location service sensor fields such as the Internet of Things, search and rescue.

The invention belongs to the field of measurement of optical parameters, and particularly relates to a time-resolved measurement system and a method for reconstructing the optical parameters of turbid media. In order to realize fast, real-time, non-invasive in-vivo measurement of the optical parameters of an organizer under different wavelengths, the invention utilizes the technical scheme as follows: laser emerging from a variable attenuator enters into turbid media through incident optical fiber to be scattered or absorbed, and then reflected or transmitted laser from the surface of the medium is received by detection fiber; the laser detected by detection fiber is sent to a PMT detector with refrigeration function, electronic pulse output by the PMT detector is input to a time-correlated single photon counting (TCSPC) module, and the TCSPC module obtains a time extension curve emerging from an organization and inputs the curve into a computer for processing. The invention is mainly used for measuring the optical parameters of the organizer under different wavelengths.

The invention relates to a laser illumination distance gating imaging device, belonging to the technical field of laser imaging and comprising a laser, near infrared camera, a synchronous control unit, a receiving telescope, an image signal processor, a central processing unit, an image monitor and a synchronous control unit; the laser is a laser outputting human eyes safe laser with output wavelength being 1.5mu m-1.6mu m; and the synchronous control unit comprises a photodiode, a timing unit and a distance gating shutter. The invention has the main characteristics of high peak power, relative safe for human eyes, high conversion efficiency and high sensitiveness.

The invention discloses a closed-loop testing system of a direct-current transformer. A standard source collection module and an optical fiber receiving module are arranged in the closed-loop testingsystem, analog signals outputted by a standard source through a secondary terminal are acquired through the standard source collection module and converted into first digital signals, and second digital signals outputted by the direct-current transformer applied with standard source primary terminal output signals are acquired through the optical fiber receiving module. Under the action of synchronizing clock signals transmitted by a synchronizing module, the first digital signals and the second digital signals are synchronously received, processed, packed and uploaded to an upper computer through a digital synchronization processing module connected with the synchronizing module, and finally, the upper computer completes closed-loop testing of the direct-current transformer according to the first digital signals and the second digital signals. The closed-loop testing system lowers requirements on stability of a standard source and improves accuracy of testing results.

The invention provides a current sensor test device which comprises a current source (1), a first power supply (2), a second power supply (3), a standard current sensor (4) and an ammeter (5). The current sensor is used to provide primary side bus current for the standard current sensor and a current sensor (6) to be tested. The winding or passing directions of a current bus on the standard current sensor magnetic core and the magnetic core of the current sensor to be tested are opposite, so that the standard current sensor and the current sensor to be tested have opposite current output directions. The ammeter is used to measure the current sum of the standard current sensor and the current sensor to be tested, wherein some or all of the output current of the standard current sensor and the current sensor to be tested are offset. The accuracy of the current sensor to be tested is judged based on the current sum. According to the invention, the accuracy of the test device is limited only by the accuracy of the standard current sensor; the accuracy and stability of the current source and the ammeter have little influence on a test system; the requirements on the accuracy and the stability of the current source and the ammeter are greatly reduced; and the cost is greatly reduced.

The invention provides a fast multi-channel spectrometer for LED full spectrum detection. The fast multi-channel spectrometer comprises an optical system, a detector, a signal processing circuit, a single chip microcomputer main control system and a control signal generating circuit. The optical system uniformly irradiates light emitted by an LED to the detector, the structure of the optical system is a crossed Czerny-Turner system; the detector is an MOS linear array image detector S3901-256LVF, which is composed of a self-scanned photodiode array provided with a linearly variable filters; the signal processing circuit is used for driving the detector and amplifying a signal output by the detector; and the single chip microcomputer main control system controls the control signal generating circuit to generate two paths of input signals required by the signal processing circuit including a main clock signal and a main initiating signal. The fast multi-channel spectrometer can realize the diversification of test parameters, can detect a plurality of signals in parallel at the same time, has very short measurement time, is high in signal-to-noise ratio, has low requirement on stability of a light source, and can obtain spatial resolution and time-resolved spectrum without adopting mechanical scanning.

The invention discloses a near-field holographic-ion beam etching preparation method of a variable-spacing raster. A high-linear density variable-spacing raster is prepared by use of the near-field holographic-ion beam etching method. Compared with the common holographic-ion beam etching method, the holographic preparation light path of the variable-spacing raster can be simplified; requirements on stability of a holographic system is reduced; and precision of linear density repeatability is improved. Compared with the mechanical scratching method, a variable-spacing raster with high linear density and smooth rectangular groove-shaped profile can be easily produced. Compared with the normal nano-imprinting technology, by optimizing the near-field holographic-developing conditions, the duty cycle of the obtained photoresist raster mask in a certain range can be regulated. Thus, the preparation method is very important for preparation technology of the required variable-spacing raster in the field of laser plasma diagnosis, synchronous radiation and the like.

The invention discloses a method for depositing a metal elementary substance thin film by atmospheric cold plasmas. The method comprises the following steps:step 1, mixed gas is excited and ionized togenerate the atmospheric cold plasmas, and the atmospheric cold plasmas form plasma light flame in a cavity of a nozzle; step 2, a metal compound solution is atomized and then enters the cavity of the nozzle; and step 3, under surrounding protection of the protective gas, the plasma light flame and fog drops generate action, solvent in the fog drops is evaporated, a metal compound in the fog drops is reduced into metal particles, and the metal particles are sprayed onto a substrate to be deposited to form the continuous metal elementary substance thin film. According to the method, the metalelementary substance thin film can be deposited under normal pressure, reaction temperature is low, the method is suitable for a heat sensitive substrate, a vacuum or closed deposition chamber is notneeded, so that the size of the substrate is not limited by space, and application range of the method is expanded; and the metal elementary substance thin film prepared by the method is stable in property, post-processing is not needed, so that the technological process is shortened, and production efficiency is improved.

The invention provides a device for detecting concentration of SF6 in a GIS pipeline off line. The device comprises a light source module and a signal analysis module which are respectively connected with a gas tank module, wherein the gas tank module comprises a standard tank and a sampling tank which are used for storing a standard SF6 mixed gas and a to-be-tested SF6 mixed gas, respectively; the light source module is used for emitting infrared light to the gas tank module; the signal analysis module is used for analyzing the concentration of the to-be-tested SF6 mixed gas in the sampling tank according to an infrared light signal and an SF6 gas database. Compared with the prior art, the device provided by the invention can be used for accurately measuring the concentration of SF6 in the GIS pipeline, and is simple in operation and high in reliability.

The invention discloses a microwave radiation measurement system for satellite-borne one-dimensional comprehensive aperture. The system comprises a scene radiometer receiver array, a calibration radiometer receiver, and a vibrating mobile phase network. The scene radiometer receiver array is used for receiving a scene microwave signal and an equivalent power internal noise source coherent signal and outputting an intermediate frequency signal. The calibration radiometer receiver is used for receiving a cold air external calibration signal and the equivalent power internal noise source coherentsignal, and calibrating through the cold air external calibration signal and a matching load so as to utilize the calibrated radiometer receiver to measure the equivalent power internal noise sourcecoherent signal in real time. The scene radiometer receiver array and the calibration radiometer receiver share the vibrating mobile phase network, so that the vibrating mobile phase network suppliesrequired local oscillator signals to the scene radiometer receiver array and the calibration radiometer receiver. The microwave radiation measurement system is simple in structure and easy to realize,and has the advantages of capable of measuring the equivalent power internal noise source coherent signal in real time, reducing the stability requirement of the equivalent power internal noise source coherent signal and the engineering realization difficulty, and improving the phase scaling precision.

The invention discloses a nearby wake-up method and device of a terminal, computing equipment and a storage medium. The method comprises the following steps that: when a target terminal receives the wake-up word of a user, a target audio with a set duration is obtained; the target terminal calculates a wake-up voice signal-to-noise ratio according to the target audio and sends the wake-up voice signal-to-noise ratio to a central control device so as to indicate the central control device to determine a nearby terminal of the user according to wake-up voice signal-to-noise ratios sent by at least one terminal and send a wake-up permission instruction to the nearby terminal; and if the target terminal responds to the user if receiving the wake-up permission instruction. According to the method provided by the embodiments of the invention, the wake-up voice signal-to-noise ratio is used as the selection basis of the nearby terminal, and calculation complexity is relatively low. The methodhas higher accuracy compared with a method judging the energy value of a wake-up audio; the wake-up voice signal-to-noise ratio is only needed to feed back to the central control device; requirementson the stability of a network are relatively low; the real-time performance of the method is relatively good; and user experience is improved.

The invention provides a production process of broad band low peak dispersion unshifted single-mode optical fiber (G.652C / D optical fiber) which comprises, (1) drawing the broad band low peak dispersion unshifted single-mode optical fiber intermediate product, (2) intermediate product screen selecting, (3) subjecting the intermediate product to deuterium gas reaction, (4) intermediate product hydrogen damage test, (5) degassing treatment, (6) intermediate product testing, (7) packaging and warehouse-in.

The invention discloses a mechanical stirring solution supply electrostatic spinning device. The mechanical stirring solution supply electrostatic spinning device comprises a container, a stirring impeller, a driving system, collecting devices and a power source. The stirring impeller is arranged in the container. The driving system can drive the stirring impeller to rotate around the axis so that a spinning solution or melt in the container can be stirred to form swirls. The container is provided with a side wall surrounding the stirring impeller, a solution storage cavity is formed inside the side wall, jet flow holes are formed in the portion, above the stirring impeller, of the side wall, and the collecting devices right face the jet flow holes. An electric field needed for jet flow generation can be formed by the power source between the collecting devices and the jet flow holes. The swirling phenomenon is applied to the spinning device, the spinning solution or melt can climb along the wall of the container under the action of stirring centrifugal force, if the jet flow holes are located in the high-voltage electric field, the jet flow holes can generate Taylor cones and form jet flows, the consumed spinning solution can be constantly implemented by the climbing spinning solution, and therefore continuous and automatic solution supply is achieved. Due to the fact that stable, continuous and automatic solution supply can be achieved, large-scale industrial production of nanofilms is facilitated.

The invention discloses a resistance high-precision measuring system and method with combination of a differential method and a proportion method. The system comprises a constant current source, a reference resistor, a first differential amplifier, a programmable gain amplifier, an analog-to-digital converter, a microprocessor, a digital-analog converter and a measured resistor interface, the measured resistor interface is connected to a measured resistor, the reference resistor and the measured resistor are connected in series to form a serial connection branch circuit connected between the constant current source and the ground, two input terminals of the first differential amplifier are respectively connected with two terminals of the reference resistor, an output terminal of the firstdifferential amplifier is connected with a voltage reference terminal of the analog-to-digital converter, a first input terminal of the programmable gain amplifier is used for being connected to a to-ground single-end voltage of the measured resistor, a second input terminal of the programmable gain amplifier is connected with an analog output terminal of the digital-to-analog converter or the ground in a controlled manner, an output terminal of the programmable gain amplifier is connected with an analog input terminal of the analog-to-digital converter, and digital output terminals of the analog-to-digital converter and the digital-to-analog converter are both connected with the microprocessor. According to the system, the influence of power supply fluctuation can be overcome, the cost islow, and the measuring precision is high.

The present invention discloses an analysis system for a scanned pathological section image and a scanning method thereof. The scanning method of the analysis system for the scanned pathological section image is applied to a slide camera scanning mirror of the analysis system for the scanned pathological section image. The slide camera scanning mirror comprises a microscope tube and a main camera.The scanning method comprises the following steps: a magnification of the microscope tube is reduced, thereby a field depth of the microscope tube is increased and a larger clear imaging range is obtained; and pixels of the main camera are increased to obtain a higher pixel density. The scanning method of the analysis system for the scanned pathological section image is to increase the field depth of the microscope tube and improve the pixels of the main camera by reducing the magnification of the microscope tube, thereby the pixel density and clarity that only are achieved by using the microscope tube with an original magnification can be achieved. The longer the field depth, the larger the range corresponding to clear imaging, and the greater the tolerance. So the difficulty of focusingis reduced and fast focusing is available. At the same time, the requirement on movement accuracy of a moving part of a mechanical structure is relatively low.