41 results about "Detector calibration" patented technology

The invention provides a neutral atom beam generation device and a neutral atom detector calibration device. The neutral atom beam generation device comprises an ion beam generation device used for emitting a mixed beam; the particle energy testing device comprises an incident end, a first emergent end, a second emergent end and an acquisition device, the incident end is used for receiving the mixed beam; the incident end is communicated with the second emergent end through an arc-shaped channel, and a deflection magnetic field is arranged at the arc-shaped channel, so that positive ions in the mixed beam flow deflect and bombard the acquisition device; the acquisition device is used for acquiring a first bombardment position of positive ions; the first emergent end is used for emitting a first ion beam; the processing device is connected with the collecting device and used for determining the deflection radius of the positive ions according to the first bombardment position and determining the energy of the positive ions and the neutral atoms according to the deflection radius; and the particle screening device is used for absorbing positive ions and negative ions in the first ion beam so as to emit a neutral atom beam.

The invention provides a linear beam span sensitivity homogenization calibration method and device based on an optical attenuation model, and relates to the field of linear beam detector calibration. The method comprises the following steps: constructing an optical attenuation model based on historical data, and obtaining a calibration range corresponding table between an installation distance and an optimal calibration range; acquiring a maximum infrared signal intensity value which has the maximum system gain and is within a preset signal margin; querying an optimal calibration range corresponding to the maximum infrared signal intensity value Vmax through a calibration range corresponding table, and calculating a distance judgment reference value based on the optimal calibration range; the automatic judging device is operated to obtain the installation distance, and the optimal calibration range is determined and recorded as the target calibration range; synchronously adjusting the current gain of the transmitting end and the signal gain of the receiving end; and carrying out consistency verification on the infrared signal intensity value, and if the verification is passed, automatically setting an alarm threshold value by adopting a relative attenuation model. The technical problems of different alarm sensitivity and poor calibration consistency under different installation distances are solved.

The present application relates to a kind of intelligent calibrators and calibration methods for headlamp detector calibration, belong to detection and instrument calibration technical field, solve the technical problems of complex structure, poor light axis calibration accuracy, image recognition difficulty, small application scope of prior art headlamp detector calibration device.The calibrator includes by upper to lower sequentially arranged: lamp holder mechanism, lamp holder rotating mechanism, lamp holder moving mechanism, comprehensive adjustment mechanism;It also includes: intelligent control system.The intelligent calibrators for headlamp detector calibration of the present application, by displacement sensor mechanism, makes displacement sensor rotate scanning, realizes the light axis center of headlamp and the light axis center of headlamp detector coincidence, under the condition of not using visual recognition sensor, also realize light axis center coincidence;Compared with prior art, avoid the error of light axis center coincidence caused by outer screen deformation, improve calibration accuracy;And it can be applicable to the headlamp detector of light axis center in different positions.

This disclosure provides a method, apparatus, and storage medium for on-orbit optical axis calibration of a spectrometer, relating to the field of astrophysical detector calibration technology. The method includes: performing a helical scan of the celestial body under test; during the scan, continuously acquiring the imaging position of the centroid of the celestial body on the imaging target surface of the imaging device, and acquiring the thermal radiation energy of its pointing position at a first angle based on a preset acquisition frequency using the spectrometer; inverting the continuously acquired imaging positions onto the first target surface, and mapping the acquired thermal radiation energy to the corresponding position on the first target surface according to the acquisition time, generating first thermal radiation data; and using the position of the point with the highest thermal radiation energy in the first thermal radiation data on the first target surface as the optical axis pointing position of the spectrometer at the first angle. This disclosure achieves joint observation by synchronously controlling the imaging device and spectrometer of the astrophysical detector, and determines the true pointing position of the spectrometer's optical axis through the observation results, which is simple to operate and has high accuracy.

The invention relates to an intelligent calibrator for headlamp detector calibration and a calibration method, belongs to the technical field of detection and instrument calibration, and solves the technical problems that a headlamp detector calibration device in the prior art is complex in structure, poor in optical axis calibration accuracy, difficult in image recognition and small in application range. The calibrator comprises a lamp holder mechanism, a lamp holder rotating mechanism, a lamp holder moving mechanism and a comprehensive adjusting mechanism which are sequentially arranged from top to bottom. The system further comprises an intelligent control system. According to the intelligent calibrator for calibrating the headlamp detector, the displacement sensor rotates and scans through the displacement sensor mechanism, the optical axis center of the headlamp coincides with the optical axis center of the headlamp detector, and the optical axis centers coincide under the condition that a visual recognition sensor is not used; compared with the prior art, the optical axis center coincidence error caused by outer screen deformation is avoided, and the calibration accuracy is improved; and the device is suitable for headlamp detectors with optical axis centers at different positions.

The application relates to a detector calibration method, a calibration device, a battery, a vehicle and a storage medium. The method comprises the following steps: collecting N particulate matter concentration information in a current environment in a preset period; determining a concentration change trend according to the N particulate matter concentration information; determining a noise value based on the concentration change trend and the N particulate matter concentration information, so that the detector can be accurately calibrated according to the noise value.

The invention discloses a detector dynamic intelligent calibration method and system. The method comprises the steps that S100, a state safety condition is preset according to sampling values of a main monitoring item and an auxiliary monitoring item, a stability safety condition is preset according to change characteristics of the main monitoring item, and a time constraint condition is preset based on a calibration period empirical value; s200, sampling the detected space, obtaining a main monitoring item sampling value, an auxiliary monitoring item sampling value and a main monitoring item change characteristic, and recording a current sampling time point; s300, judging whether a current sampling time point meets a time constraint condition or not, judging whether a currently obtained main monitoring item sampling value and an auxiliary monitoring item sampling value meet a state safety condition or not, judging whether a main monitoring item change characteristic meets a stability safety condition or not, if all the conditions are met, entering the step S400, and if not, returning to the step S200; and S400, controlling the main monitoring item detector to execute automatic zero calibration operation. According to the invention, the accuracy, timeliness and convenience of detector calibration can be significantly improved.

The invention relates to a calibration device for an X-ray fluorescence detector. Comprising a calibration cup, a calibration disc, a batching mechanism and a waste collection mechanism. A material opening is formed in the bottom of the calibration cup, a first one-way valve is arranged at the position of the material opening, a cup cover and an opening and closing mechanism are arranged at the position of an upper cup opening of the calibration cup, the calibration disc is provided with a containing groove, an upwards-protruding ejector rod is arranged at the center of the bottom of the containing groove and used for ejecting the first one-way valve, and a butt joint opening coaxial with the material opening in diameter is formed in the periphery of the ejector rod. The lower end of the butt joint port is connected with a two-position three-way valve, the other two ports of the two-position three-way valve are connected with a feeding connector and a discharging connector respectively, the batching mechanism is located in the calibration disc and comprises a batching barrel, the batching barrel is connected with a first feeding mechanism and a second feeding mechanism which can feed materials into an inner cavity of the batching barrel in a quantitative mode, and a stirring mechanism is further arranged in the batching barrel. And an outlet of the batching barrel is connected with a second one-way valve which is communicated downwards in one direction.

Methods and systems are provided for calibrating a single photon emission computed tomography (SPECT) imaging system. In one example, a collimated line source for calibrating a SPECT system comprises a radioactive material aligned along a central axis of the collimated line source and a plurality of collimator plates arranged perpendicularly around the central axis, the collimator plates including a material that substantially absorbs photons striking the collimator plates. The collimator plates may absorb photons emitted by the radioactive material in non-perpendicular directions, which are not used for calibrating the SPECT imaging system, thereby reducing an amount of radiation released in an environment of the SPECT imaging system during calibration. Due to the reduced amount of radiation to which people in the environment are exposed, short time increments between patient examinations may be advantageously used to collect calibration data, reducing an overall amount of time used for calibration.

The invention relates to the technical field of ionizing radiation measurement, and discloses a delayed neutron detector calibration device and method. The delayed neutron detector calibration device comprises a box body, a point neutron source and a moving assembly. An independent working cavity and an independent mounting cavity are defined by the box body. And the point neutron source is arranged in the mounting cavity. The moving assembly is arranged in the box body, the connecting end of the moving assembly extends into the working cavity, and the connecting end of the moving assembly is connected with the detector. Wherein the moving assembly is used for driving the detector to move relative to the point neutron source, so that different positions of the detector correspond to the point neutron source, and the reading of the detector is obtained so as to perform segmented calibration on the detector. According to the method and the device, the delayed neutron detector can be calibrated on site, the time of the calibration implementation process of the delayed neutron detector is shortened, and the difficulty of the calibration implementation process of the delayed neutron detector is reduced.

The invention relates to the technical field of photoelectric detection, and discloses a physical photoelectric detector calibration system which comprises a spectrum light source module, an environment simulation module, a dual-optical-path detection module, a coupling control module and a feedback and processing module. Through the design of the multi-dimensional coupling dynamic calibration system for the physical photoelectric detector and by means of the synergistic effect of composite scene simulation, multi-parameter linkage regulation and control and real-time feedback optimization, the calibration precision of the photoelectric detector is greatly improved, and the calibration result better meets the actual application requirement; the deviation between the calibration value and the real use state is effectively reduced, the dynamic applicability of the system is successfully expanded, the real-time calibration requirement of the high-speed response type photoelectric detector can be met, and the lag limitation of the traditional off-line calibration is broken; and meanwhile, compatible calibration of visible light, infrared, ultraviolet and other multi-band and multi-type photoelectric detectors is realized, the reuse rate of equipment is remarkably improved, and the purchase, operation and maintenance cost of enterprises is greatly reduced.

The utility model discloses an automatic calibration device of an environmental protection monitoring instrument, which belongs to the technical field of poison gas detector calibration, and comprises an air duct component consisting of an arc-shaped pipeline and a straight pipeline, and the top of the straight pipeline on one side of the air duct component is provided with an exhaust port and a duplex gas transmission port. A mounting groove is formed in the outer side wall of the straight pipeline on the other side of the air duct assembly, and a calibration assembly is arranged in the mounting groove. According to the utility model, the internal circulating fan is arranged, so that the test gas can be driven to circulate in the air duct assembly, the gas flowing state of the poison gas detector in the actual use scene is restored, the effect of improving the calibration accuracy is realized, and toxic residues in the air duct and the detector are thoroughly removed through circulating purging of inert gas after calibration; through cooperation of the double-layer tray and multiple groups of test data lines, simultaneous connection and calibration of multiple poison gas detectors can be supported, the manual operation time is reduced, and the calibration efficiency is improved.

The utility model provides a calibrator for a steel rail ultrasonic flaw detector, which relates to the field of steel rail ultrasonic flaw detection and comprises a time interval trigger, a signal generator and an attenuator, the output end of the time interval trigger is electrically connected with the input end of the signal generator, and the output end of the signal generator is electrically connected with the input end of the attenuator. And the output end of the attenuator is electrically connected with the input end of the to-be-calibrated steel rail ultrasonic flaw detector. The calibration device has the advantage of improving the calibration efficiency of the steel rail ultrasonic flaw detector.

This invention provides a rapid nucleic acid detection instrument calibration device, including a temperature probe. Within the temperature probe, corresponding to the nucleic acid detection instrument, are arranged from top to bottom a nucleic acid lysis zone, a nucleic acid washing zone, and a nucleic acid amplification detection zone. At the center of each of the three zones, a first temperature sensor for detecting the temperature of the nucleic acid lysis zone, a second temperature sensor for detecting the temperature of the nucleic acid washing zone, and a third temperature sensor for detecting the temperature of the nucleic acid amplification detection zone are respectively located. This invention uses three different temperature sensors within the same temperature probe, corresponding to different detection zones of the instrument, to effectively detect temperature field changes in different areas.

A power calibration circuit, method, control unit, storage medium and program product of a differential detector. The power calibration circuit comprises: a differential-to-single-ended unit electrically connected with an output end of a transimpedance amplifier, configured to convert a differential signal output by the differential detector into a single-ended signal; a comparison unit connected with the differential-to-single-ended unit, configured to determine whether the single-ended signal is a set calibration value; a calibration power input unit electrically connected with the differential detector to be calibrated, configured to output a calibration power signal with a stable calibration value to the differential detector to be calibrated; and a control unit and a power calibration unit, the control unit being connected with the comparison unit and the power calibration unit, and configured to output a control signal to the power calibration unit when the single-ended signal is not the set calibration value, so as to calibrate the power of the differential detector until the single-ended signal is the set calibration value. The differential detector circuit of the application improves the performance of the differential detector in use by calibrating the differential detector.

This invention relates to a method for preparing an ultrathin 4π fission source based on a graphene substrate, belonging to the field of fission source preparation. The method involves preparing a graphene-toughened carbon film, growing graphene of a predetermined thickness on the film, and transferring the resulting substrate material. Fissionable material is then transferred onto the graphene substrate using a combination of solution drying and vacuum self-transfer technology, resulting in an ultrathin fission source capable of emitting fission fragments in the 4π direction. By transferring fission nuclides to a nanometer-thick graphene substrate, the fission products released from the fission source are emitted in the 4π direction, and the average energy loss of the fission fragments penetrating the substrate is far less than their own kinetic energy. This yields a high-quality fission source with low energy loss and minimal self-absorption, achieving efficient and stable preparation of an ultrathin 4π fission source, providing a relatively "perfect" fission source for fission physics experiments or related detector calibration.

The application provides a neutral atom beam generating device and a neutral atom detector calibration device. The neutral atom beam generating device comprises: an ion beam generating device for emitting a mixed beam; a particle energy testing device comprising an incident end, a first exit end, a second exit end and a collection device; the incident end is used for receiving the mixed beam; the incident end and the second exit end are communicated through an arc-shaped channel, and a deflection magnetic field is arranged at the arc-shaped channel to deflect positive ions in the mixed beam and hit the collection device; the collection device is used for obtaining a first hitting position of the positive ions; the first exit end is used for emitting a first ion beam; a processing device connected with the collection device is used for determining a deflection radius of the positive ions according to the first hitting position, and determining the energy of the positive ions and neutral atoms according to the deflection radius; and a particle screening device is used for absorbing the positive ions and negative ions in the first ion beam to emit a neutral atom beam.

The invention relates to the field of safety equipment, in particular to a combustible gas detector calibration device installed in a pipeline, which comprises a calibration block, a gas chamber is arranged in the calibration block, the gas chamber is provided with a gas inlet and a gas outlet which are communicated with the outside, and a perspective window A and a perspective window B are axially arranged on two opposite side surfaces of the gas chamber; the clamping part is arranged on the calibration block and used for adjusting the position, fixed to the gas detector, of the calibration block. According to the calibration device, the detector installed in the pipeline can be calibrated without disassembling the whole detector, and therefore it is avoided that the detector needs to be repeatedly disassembled for calibration.

The invention relates to a heavy metal rapid detector calibration device. Comprising a calibration cup and a calibration disc, a containing groove used for containing the calibration cup is formed in the calibration disc, a feeding cavity is formed in the position, corresponding to a powder inlet in the calibration cup, of the containing groove, a spiral feeding mechanism is arranged in the feeding cavity to achieve quantitative feeding of heavy metal powder, and inserting structures are correspondingly arranged at the bottom of the containing groove and the bottom of the calibration cup. Comprising a one-way conduction structure of a liquid supply port and a liquid inlet through a one-way valve and a butt joint structure of a stirring mechanism, during calibration, the amount of heavy metal powder added into a calibration cup is controlled by controlling a spiral feeding mechanism, and the amount of a mixed liquid medium added into the calibration cup is controlled by controlling a control valve on a liquid supply channel; the technical problems that in an existing calibration mode, the using amount of accessories such as a disposable container and a sample cup is large, operation is tedious and troublesome, efficiency is low, and the calibration speed is seriously restricted are solved.

The invention discloses an X-ray machine tube voltage measuring device and method based on an energy spectrum detector. The measuring device comprises a filter, a collimator, the energy spectrum detector, a data acquisition module and an upper computer. During measurement, an energy spectrum detector is calibrated firstly, and the corresponding relation between a channel value and energy is established; then known tube voltage X-ray energy spectrum measurement is carried out, an energy spectrum curve of known tube voltage is obtained, and the energy spectrum curve is used for representing the corresponding relation between energy and counting; and then feature point and feature point energy determination and secondary calibration are carried out in sequence to obtain a corresponding relation between energy and tube voltage. During actual measurement, the X-ray energy spectrum data of the voltage of the to-be-measured tube is collected through the energy spectrum detector, an energy spectrum curve is obtained through processing and conversion, then the feature points and the energy of the feature points are obtained, and the tube voltage can be obtained reversely. According to the invention, the tube voltage can be accurately measured under different working conditions, and the problems of large tube voltage measurement error, complex calibration and high cost in the prior art are solved.

This invention discloses a high-precision track reconstruction method for GeV-level proton beam telescopes, comprising: setting a high-current mode to collect hit clusters of multi-particle events within a single time window; employing a layer-by-layer state prediction intelligent search algorithm based on a multiple Coulomb scattering model, starting from the first detector layer, combining initial angular dispersion and material scattering to calculate the total angular dispersion standard deviation, and determining circular candidate search regions layer by layer; performing track connection, branching, or pruning based on cluster matching within the region; updating the track direction using the connection direction of matched clusters, and superimposing the scattering angle standard deviation of the next layer of material, iteratively predicting subsequent search regions until all detector layers are traversed, outputting a high-quality candidate track set. This invention can achieve stable and efficient track reconstruction under the conditions of GeV-level proton beams with significant scattering and accumulation, providing a reliable data foundation for high-precision detector calibration.

The utility model discloses a device matched with a detection wheel and used for calibrating a cigarette appearance detector, a cigarette making and tipping unit comprises the detection wheel, the cigarette appearance detector is arranged on one side of the detection wheel, the device comprises a calibration tool, the calibration tool comprises a calibration body, and a calibration flat plate is detachably mounted in a mounting groove in the top of the calibration body; extension plates are arranged at the left end and the right end of the top of the calibration body respectively, two positioning shafts are arranged at the bottom of the calibration body, each positioning shaft extends in the left-right direction and is detachably connected with the calibration body, and an avoiding groove which extends in the left-right direction and is used for avoiding the calibration rod is formed in the bottom of the calibration body. The receding groove is located between the two positioning shafts and communicated with the mounting groove, and the front positioning shaft, the calibration rod and the rear positioning shaft are matched with three adjacent cigarette grooves in the circumference of the detection wheel respectively. Compared with the prior art, the cigarette appearance detector calibration device has the advantage that the cigarette appearance detector is calibrated.

The utility model discloses an ammonia gas detector calibration device, which comprises a counterweight seat, a detector calibration structure and two fixed cylinders, the detector calibration structure and the fixed cylinders are connected with the counterweight seat, gas cylinders are arranged in the two fixed cylinders, ammonia gas is stored in one gas cylinder, air is arranged in the other gas cylinder, and the detector calibration structure and the fixed cylinders are connected with the counterweight seat. A multi-connected pipe is connected between the two gas cylinders, and the output end of the multi-connected pipe is connected with a detector calibration structure; the two supporting assemblies are arranged on the outer walls of the two fixing cylinders in a sleeving mode respectively and used for supporting the whole device and promoting stability of the device, the supporting frame is unfolded to form an angle of 60 degrees with the floor, the supporting effect can be achieved, under the auxiliary effect of the sealing gasket, the piston is pulled upwards, and therefore the supporting effect is achieved. And the counterweight seat can be adsorbed on the floor, so that the counterweight seat is not easy to incline and collapse, and the problems in the background technology are effectively solved.

The invention discloses a detector calibration method and device applied to radiotherapy, a medium and equipment, and relates to the technical field of medical equipment calibration. Dark flat field reference data, bright flat field reference data, dose response data, radiation field correction data, motif correction data, off-axis correction data and artifact correction data can be obtained. The artifact correction data comprises a seventh gray value obtained after the detector is irradiated by rays for a plurality of preset durations and each irradiation is completed, and an eighth gray value obtained after the artifact disappears. And according to the data, determining calibrated dose values respectively corresponding to different gray values of the detector. Therefore, the electronic equipment calibrates the detector based on the data such as the artifact data and the dose response data, so that the influence of factors such as artifacts and dose change on the detector is reduced, and the accuracy of the detector is improved.

The utility model discloses a hemodialysis device detector calibration device pressure calibration loop structure which comprises a bottom plate, a control module and a pressure calibration module, the control module and the pressure calibration module are both arranged on the bottom plate, and the control module is connected with the pressure calibration module; the pressure calibration module comprises a pressurization unit, a pressure bearing unit and a pressure regulation and control unit; the pressure bearing unit is connected with the pressurizing unit and the pressure regulation and control unit through pipelines, the pressurizing unit is used for pressurizing the pressure bearing unit, and the pressure regulation and control unit is used for detecting and regulating the pressure of the pressure bearing unit; according to the utility model, the control module and the pressure calibration module are arranged on the bottom plate, and the pressurization unit, the pressure bearing unit and the pressure regulation and control unit in the pressure calibration module are controlled by the control module, so that the pressure parameters of the hemodialysis device detector can be calibrated, the design is reasonable, a stable pressure source can be accurately generated, and the detection accuracy is improved. And the accuracy and the reliability of the calibration result of the hemodialysis device detector are ensured.

The invention relates to the field of gas detectors, in particular to a gas leak-proof detector calibration device and a calibration method.The gas leak-proof detector calibration device comprises a box body, a fixing mechanism for fixing a detector is arranged on the side wall of the bottom end of the box body, and a testing mechanism for conveying gas is arranged at the bottom end of the inner side wall of the box body; according to the gas leak-proof detector calibration device and calibration method, through gas path cleaning before calibration and self-checking design in the calibration process, residual gas interference is eliminated, the reliability of the calibration process and the effectiveness of the result are guaranteed, the pressure of the test gas tank is monitored in real time through the first pressure sensor in the calibration process, and the calibration accuracy is improved. By means of the design, calibration failure caused by cross contamination and leakage of residual gas is effectively avoided, the one-time passing rate of the calibration process is increased, and the calibration efficiency is greatly improved.

The invention relates to the technical field of industrial CT calibration, in particular to an industrial CT adaptive calibration detector calibration device which comprises a sliding table, an emitter, a sliding seat and a detector are sequentially arranged on the sliding table, and a partition calibrator is arranged on the detector and used for independently calibrating different areas of the detector. The partition calibrator comprises a frame rotationally connected to the support, a calibration area is constructed in the frame, the frame can turn over to drive the calibration area to correspond to the detector of the detector, a shielding driving part is arranged on the frame, and a shielding plate is movably arranged on the frame through the shielding driving part; through multi-stage cooperation of the shielding frame, the shielding block and the baffle through hole, a closed calibration space is formed, stray rays are filtered, pixel-level refined calibration is achieved by combining the quarter-notch subdivision calibration unit, sensitivity deviation and dark current abnormity of a single pixel are accurately recognized and corrected, and the overall calibration precision of the detector is improved.

A calibration system includes a sensor including a light emitter to emit a first light and a second light, and a detector to detect the first light and the second light. The calibration system also includes a calibration structure, processing circuitry, and a memory including instructions that, when executed by the processing circuitry, cause the processing circuitry to instruct a first light-emitting diode (LED) of the light emitter to emit the first light at a first wavelength and a second LED of the light emitter to emit the second light at a second wavelength, receive a signal indicative of the first light at the first wavelength and the second light at the second wavelength, determine a first power at the first wavelength and a second power at the second wavelength based on the signal, and determine a power ratio as a ratio of the first power and the second power.

This invention discloses an irradiation device and a method for testing the performance of radiation detectors and scintillation crystals. The irradiation device includes a housing with several horizontally arranged partitions inside, spaced vertically to divide the housing into several chambers. Each chamber contains an irradiation unit. Each irradiation unit includes a rotating mechanism with a placement slot for placing a radiation source. The rotating mechanism is horizontally rotatable. An operating port is provided on one side wall of the housing, allowing the placement slot to extend out of the housing after the rotating mechanism rotates at a certain angle, facilitating the replacement of the radiation source within the placement slot. The bottom plate of the housing and all partitions have collimation holes corresponding to the placement slots, ensuring that the placement slots are positioned directly above the collimation holes after the rotating mechanism rotates, and all collimation holes are aligned on the same straight line. This invention can be used for scintillation crystal performance testing, radiation detector calibration, and scaling experiments, and can effectively reduce radiation damage to workers.

The invention relates to a detector revising and splicing method based on an optical filter cross-shaped target projection matrix, and belongs to the technical field of high-precision splicing of space remote sensing camera detectors. The technical problem that the image quality is reduced due to the fact that different detectors are not collinear in a detector splicing method in the prior art is solved. According to the method disclosed by the invention, a coordinate matrix spliced by the detectors is obtained through methods such as a centroid extraction algorithm, a linear fitting algorithm and coordinate matrix normalization processing by utilizing the position of an optical filter target projection image, and the problem that the detectors are not collinear due to inclined splicing of optical filters is solved. According to the method, a preset mark point of the detector does not need to be referred to, linear splicing of the detector can still be achieved under the condition that only an optical filter mark point exists, it can be guaranteed that the maximum inclination of pixels in the same row is smaller than 0.5 pixel size, the dislocation precision between rows is smaller than 0.3 pixel size, random errors caused by inclination of the optical filter are avoided, and the detection accuracy is improved. Therefore, the problem of detector collinearity is solved, and the splicing precision is improved.