69 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.

Systems and methods are provided for calibrating computed tomography (CT) system. In one example, a method for a computed tomography (CT) system comprises, during a calibration of the CT system, measuring a position of a detector element of a detector array of the CT system using a wire of a wire phantom coupled to a table of the CT system, during a rotational scan performed using the CT system; and during a subsequent scan performed on a subject using the CT system, applying the measured position of the detector element rather than a design target position of the detector element during reconstruction of an image from projection data acquired via the CT system; and displaying the reconstructed image on a display device of the CT system.

The invention relates to the technical field of sensors, in particular to a CIOD-based noninvasive blood glucose detection sensor and method.The sensor comprises a multi-layer structure and comprises a first flexible polyimide substrate tightly attached to the skin, a temperature control assembly, a second flexible polyimide substrate and a glucose detection patch; the temperature control assembly comprises a temperature sensor and a heating wire and is used for thermally activating the skin; the glucose detection patch comprises three electrode areas filled with perfluorinated sulfonic acid resin, wherein the first electrode area comprises a first sodium ion working electrode, a shared electrode and a detection working electrode; the second electrode region contains a sodium ion reference electrode; the third electrode area comprises a second sodium ion working electrode and an auxiliary electrode; the electrodes are connected through insulating coating wires; the shared electrode and the auxiliary electrode form an interstitial fluid extraction electrode pair, and the detection working electrode and the shared electrode form a glucose detector to detect a hydrogen peroxide signal generated by glucose oxidation; the first sodium ion working electrode, the second sodium ion working electrode and the sodium ion reference electrode form a sodium ion differential detector to calibrate a glucose signal. According to the novel noninvasive blood glucose detection sensor provided by the invention, efficient, noninvasive and portable blood glucose monitoring can be realized by combining thermal activation and differential self-calibration.

The invention relates to the technical field of radiation measurement, in particular to a detector calibration device and method in a high-current BNCT mixed field, and the device comprises a front moderation plate, a detector accommodation module, and a detector group. The detector containing module is arranged on one side of the front moderation plate, a plurality of placing holes which are distributed in a circumferential mode are formed in the detector containing module according to a preset radius, the detector group comprises a plurality of detector units, the plurality of detector units are placed in the plurality of placing holes respectively, and the plurality of detector units are arranged in the plurality of placing holes respectively. A gold foil is arranged between the placing hole in the top and the detector unit; and a cadmium-coated gold foil is arranged in the placing hole corresponding to the gold foil mirror image. Therefore, through a double calibration method, low-flux reference calibration and high-flux actual beam correction are combined to improve calibration precision.

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.

The utility model discloses a shell structure of a hemodialysis device detector calibration device, which comprises a shell assembly and a bottom drawing assembly, the shell assembly comprises a shell and a sliding cover, the sliding cover is arranged at the top of the shell, the bottom drawing assembly is arranged at the bottom of the shell, support legs are arranged on the periphery of the bottom of the shell, and the thickness of the bottom drawing assembly is smaller than the length of the support legs; a plurality of air inlet channels are formed in the edge position of the lower portion of the shell, the air inlet channels are arranged in parallel at intervals, three ventilation holes are formed in the back of the shell, and exhaust fans are arranged at the positions, located at the ventilation holes, of the interior of the shell; the bottom pulling assembly is separated from the ground through the supporting feet, it is guaranteed that a bottom plate of the bottom pulling assembly can be pulled smoothly, a placing platform is provided for a hemodialysis device or a detector or a small sensor to be detected, meanwhile, multiple air inlet channels are formed in the front face of the shell, three exhaust fans are arranged on the back face of the shell, the exhaust fans are matched with the ventilation holes, and air channels are formed in the shell. And heat generated by each part in the shell is discharged, so that the calibration device is prevented from being damaged by high temperature.

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.

The utility model discloses a hemodialysis device detector calibration device temperature calibration loop structure which comprises a bearing module, a liquid containing unit, a circulation unit, a temperature control unit and a control module, the bearing module comprises a bottom plate, partition plates and a plurality of connecting beams, the connecting beams are arranged on the bottom plate, the partition plates are arranged between the connecting beams, and the partition plates and the bottom plate are arranged at intervals; the circulation unit and the liquid containing unit are arranged on the partition plate, the temperature control unit is arranged below the circulation unit and located on the bottom plate, the liquid containing unit, the circulation unit and the temperature control unit are connected through pipelines, and the control module is connected with the liquid containing unit, the temperature control unit and the circulation unit. Start and stop of each unit are controlled by the control module to carry out temperature regulation and liquid circulation, so that the temperature can be quickly regulated to a plurality of preset detection values and is kept constant, the liquid temperature can be accurately controlled, and the accuracy and the reliability of a detection calibration result of an external sensor or a hemodialysis device to be detected are ensured.

The present invention relates to a calibration method for an ultrasonic flaw detector calibration device. The method comprises obtaining and emitting an ultrasonic wave having a theoretical frequency matching that of a material to be detected, obtaining the actual propagation path of the ultrasonic wave and performing real-time dynamic correction, generating calibration parameters for a frequency-delay compensation coefficient, compensating the emitted ultrasonic wave based on the calibration parameters, and collecting a time-baseline signal after the compensated ultrasonic wave enters the material to be detected. The signal is then input into a trained deviation calculation model to calculate the time axis scale deviation, adjusting the time-baseline linearity based on the time axis scale deviation, generating a stepped ultrasonic attenuation signal, and collecting the amplitude value of the flaw detector echo signal. The amplitude value of the echo signal is compared with a preset amplitude threshold to obtain a dynamic difference between the two, and adjusting the attenuation amount in real time based on the dynamic difference. The method solves the problems of insufficient calibration efficiency and consistency, poor dynamic parameter adaptability, limited sensitivity calibration accuracy, and the ability to simulate complex working conditions in the prior art.

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 relates to the technical field of calibration equipment, and discloses an axle strain and scratch detector calibration device which comprises a base, a mounting groove used for placing a detector is formed in the upper side of the base, a protruding block is arranged at the top of the base, a baffle is fixedly connected to the front end, corresponding to the mounting groove, of the upper side of the base, and a containing groove is formed in the front end of the base. A special detection tool for simulation detection is arranged in the containing groove, a plurality of detection steps are arranged on the outer surface of the special detection tool, the rear ends of the detection steps are connected with the interior of the base through adjusting assemblies, the base is placed on a tray, and one side of the tray is connected with a supporting seat through two bolts. According to the utility model, the detector is placed on the supporting seat and is clamped with the special detection tool, then the depths of the detection steps on the special detection tool are measured in sequence, the actually measured values are recorded, and then error calibration is carried out by referring to the standard values, so that the whole axle strain and scratch detector is calibrated.

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.

The invention discloses an X-ray beam preparation method and a detector calibration method. The X-ray beam preparation method comprises the following steps: 1) selecting an X-ray light tube of a corresponding target material according to the scale requirement of a detector; (2) preparing a multi-layer film element according to the energy of the selected X-ray light tube, wherein the multi-layer film element is used for diffracting X-rays output by the X-ray light tube; 3) placing the multilayer film element at a position which is a set distance away from the selected X-ray light tube, and adjusting the posture of the multilayer film element, so that the multilayer film element diffracts the X-rays output by the selected X-ray light tube; 4) moving the multilayer film element back and forth along the light beam direction, and determining the position with the largest diffraction spot and the strongest central spot as the final position of the multilayer film element; and 5) adjusting the roll angle and the swing angle of the multilayer film element, and taking the X-ray when the diffraction spot is strongest and maximum as the X-ray for detector scale calibration. The prepared X-ray beam is used for calibrating the detector, and the problems of scale and calibration of the advanced detector are solved.

The present invention provides an adaptive beam spot calibration method and system based on a small-angle X-ray scattering device. Using the Monte Carlo principle, the method simulates and optimizes the Ni filter thickness and pinhole combination to obtain an optimized X-ray source. The X-ray source then illuminates a detector to complete initial detector calibration. Image signals representing the sample's scattering characteristics are collected, and beam spot morphological characteristic data is output. Finally, calibration completion is determined through a multi-index statistical test. The method completes initial calibration by checking the light source stability. By controlling a water cooling mechanism and implementing step-by-step power loading, the method ensures stable operation of the light source module and provides stable calibration light source conditions. Finally, a spiral search algorithm is used to quickly locate a location with good beam spot quality during the coarse adjustment phase. An adaptive PID controller is then used to perform fine-tuning adjustments during the fine adjustment phase to determine calibration completion, ensuring system stability and sensitivity.

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 present invention relates to the field of electromagnetic detection technology, and discloses an electromagnetic detector calibration device, comprising an electromagnetic field generator, a base and a turntable are provided below the electromagnetic field generator, a rotating mechanism is installed inside the base, the turntable is connected to the rotating mechanism, a plurality of arc grooves are radially distributed on the turntable, the arc grooves are all concentric with the turntable, adjacent arc grooves are connected by connecting grooves, the arc grooves and the connecting grooves are connected to form spiral grooves, a fixed frame is provided below the turntable, a slide rail is provided on the top of the fixed frame along the axial direction of the turntable, a slider is slidably connected in the slide rail, a positioning column is provided on the top of the slider, a placement block for placing the detector is provided above the turntable, the positioning column passes through the spiral groove and is fixedly connected to the bottom of the placement block, the device can quickly move the positioning column to the corresponding positioning point in sequence, thereby quickly completing the data collection of the electromagnetic intensity of the detector to be tested at that location, greatly reducing the time required for calibration, and improving the calibration efficiency.

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.