69 results about "Thermoluminescence" patented technology

Sensor for sensing temperature and measuring the state of charge (SOC) of a fiber-optic accumulator comprising one or more thermoluminescent materials, at one or more emission peaks in a region of variation of the optical absorption spectrum of the insertion material of an electrode. A sensor for sensing temperature and measuring the state of charge (SOC) of a metal-ion accumulator, including an optical fiber one free end of which forms an optical probe including one or more thermoluminescent materials capable of emitting a light peak at at least two wavelengths, at least one of the two peaks being designed to be in at least one region of variation of the optical absorption spectrum of the metal ion insertion material of at least one electrode of the accumulator, the ratio of the two peaks depending on the temperature of the accumulator and the variation in intensity of at least one of the two peaks being dependent on the insertion of the metal ions into the electrode.

The invention discloses a portable thermoluminescence dosage device based on photon counting, and relates to the technical field of nuclear radiation detection equipment, the portable thermoluminescence dosage device comprises a shell, a rack, a heating module, a photon counting module and a movement module, and accurate measurement is realized through cooperation of multiple modules. In the motion module, a cam shaft, a rotating handle and a rolling bearing are matched to drive a heating cavity to drive a heating plate to move flexibly, and a guide hole of a heating supporting table guarantees moving stability. The dosage piece positioning plate accurately positions the dosage piece, the heating plate stably heats, and the reset spring buffers and assists the heating cavity in resetting, so that the device is ensured to run circularly. The filter group is accurately mounted and is matched with the sealing ring to isolate external interference, so that the detection accuracy of the photon sensor is improved, and the measurement precision is guaranteed. The device shell is provided with the display screen and the charging interface, data can be displayed in real time, charging is convenient, portability and practicability are enhanced, and the device is suitable for portable thermoluminescence dosage measurement in multiple scenes.

The invention relates to the technical field of thermoluminescence dating, and discloses a thermoluminescence dating device using low-dose source irradiation, comprising: a detection module adopting a multi-channel detection technology and having a built-in photon detector; the heating module is used for heating the sample to be detected, releasing energy stored in the sample and generating a thermoluminescence signal; the radiation module is used for irradiating the sample and simulating radiation conditions in a natural environment; the data acquisition and analysis module is responsible for recording the signal from the detection module and processing and analyzing the signal; and the mounting module is used for placing a sample to be tested. The thermoluminescence dating device provided by the invention is simple in structure and convenient for a user to load and sample, and can realize that the irradiation unit is close to the limit of the sample and increase the source dose rate, thereby realizing the purpose of low-dose source irradiation, simplifying the equipment management and approval procedures, and then more accurately compensating signal deviation caused by external factors, and improving the dating accuracy of the thermoluminescence dating device. And the measurement precision of the thermoluminescence dating device is improved.

The invention discloses a quartz 3D printing defect detection and reconstruction method and device based on acousto-optic collaborative perception, and relates to the field of additive manufacturing quality monitoring of optical quartz glass materials. The method comprises the following steps: acquiring a sound wave signal and a pyroelectric spectrum signal in a quartz printing process; extracting acoustic characteristics reflecting the sintering uniformity of the quartz material from the acoustic wave signals, extracting acoustic physical quantity characteristics from the acoustic wave signals, and extracting optical characteristics reflecting the molecular-level uniformity and densification degree in the sintering process of the quartz material from the pyroelectric spectrum signals; and fusing the acoustic features, the acoustic physical quantity features and the optical features to obtain fused features, and obtaining a defect identification result based on the fused features. According to the method, through multi-dimensional data fusion and deep learning analysis, automatic defect detection of quartz 3D printing is achieved, key parameters in the sintering process can be adjusted in real time, and the optical transmittance and the overall structure quality of a quartz material are remarkably improved.

The invention discloses a radiation dose detection method and system for an irradiation cross-linked area, and belongs to the technical field of radiation dose detection.The method specifically comprises the steps that coordinates of a to-be-detected core point and coordinates of related points around the to-be-detected core point are input, and transient fluorescence spectrums, thermoluminescence signals and conductivity change data of all the points in an irradiation window are synchronously collected; constructing a physical configuration association model based on association point distribution, and forming a scattered field association data network; when the residual error between the actually measured data of the core point and the model predicted value exceeds a dynamic threshold value, activating the reverse solving process of the scattered field, reversely reconstructing a theoretical data sequence of the core point by using associated node data, and replacing interfered original data; and finally, inputting the reconstructed sequence into a dose calculation model, and outputting a corrected radiation dose value. According to the invention, measurement errors caused by local material non-uniformity and instantaneous interference can be effectively reduced, and the reliability of dose detection is improved.

The utility model relates to the field of quality control of medical electron linear accelerators. Multi-dimensional radiotherapy dose measuring equipment comprises a multifunctional water tank, mounting grooves arranged in a matrix mode are formed in a bottom plate of the multifunctional water tank, the mounting grooves are used for placing thermoluminescence dosimeters, and film slots used for inserting films are formed in the bottom of the inner wall of the multifunctional water tank; three mounting holes with different heights are formed in a side plate of the multifunctional water tank, the mounting holes are used for being in butt joint with an ionization chamber plug or a water tank plug, and the water tank plug is used for blocking the mounting holes; the ionization chamber plug is used for installing the ionization chamber, and a through hole for inserting the ionization chamber is formed in the ionization chamber plug; the thermoluminescence dosimeter box further comprises a bearing bottom plate, bearing grooves distributed in a matrix mode are formed in the bearing bottom plate, and the bearing grooves are used for containing thermoluminescence dosimeters. By optimizing the structure of the water tank, compared with a traditional one-dimensional water tank, the dose measurement dimensionality is greatly improved.

The invention relates to a personal dosimeter for neutron and photon mixed radiation detection and a detection method, the dosimeter comprises a base, an upper cover and three groups of detection assemblies, and the base is provided with three grooves which are distributed in parallel and respectively accommodate a first detection assembly, a second detection assembly and a third detection assembly. The first detection assembly and the second detection assembly each comprise a neutron absorber with grooves formed in the upper portion and the lower portion and a 6Li thermoluminescence detector pair and a 7Li thermoluminescence detector pair, and separated measurement of the dose of thermal neutrons, medium-high energy neutrons and gamma rays is achieved. The third detection assembly comprises a neutron moderator and a solid track detector. Separation measurement of neutrons with different energies is realized through track density difference. The upper cover is provided with a measuring window, and tissue equivalent materials with different mass thicknesses are adopted and correspond to the dose depth of Hp (10) and the dose depth of Hp (3). Through combination of multi-channel reading and correction coefficient calculation, dose evaluation of gamma rays, thermal neutrons and fast neutrons on different tissue depths can be realized. The device is compact in structure, and is suitable for personal dose monitoring in a complex radiation environment.

The utility model discloses a thermoluminescence detector angle response irradiation device which comprises a supporting frame, a plurality of vertically distributed positioning grooves are formed in the outer walls of the two sides of the supporting frame, a carrying rod is installed on the supporting frame through the positioning grooves, and a plurality of linearly distributed grooves are formed in the outer wall of the front face of the carrying rod. The outer portion of the front face of the carrying rod is sleeved with an outer cover, a protractor is fixedly arranged on the outer wall of one side of the supporting frame, a locking assembly located on the outer side of the supporting frame is arranged at one end of the carrying rod, stopping discs are arranged on the outer walls of the two ends of the carrying rod, and supporting shafts installed in the positioning grooves are arranged on one sides of the stopping discs. According to the utility model, the plurality of loading rods with adjustable angles and the grooves are adopted, so that the loading of a plurality of detectors can be realized, the irradiation of metering sheets under different angle conditions can be met, and data of a plurality of different angles can be obtained through one-time irradiation.

The invention provides a controllable preparation method for synthesizing a rare earth doped phosphate thermoluminescent material through a high-temperature solid-phase method. The controllable preparation method mainly comprises the steps of raw material selection, temperature selection, heating time regulation and control, rare earth element selection, concentration regulation and control and the like. Preferably, in the step of controllable preparation of the rare earth doped phosphate (ABPO4: Re) thermoluminescent material, a method for controllable preparation by illuminating a high-temperature solid-phase synthesis regulation mechanism of the rare earth doped phosphate thermoluminescent material is further included, and a radiation dose linear response curve of the material is obtained by researching the thermoluminescent characteristics of the material and then is applied to radiation dose detection.

The invention relates to the technical field of neutron measurement, and particularly discloses a thermoluminescence field dosimeter for measuring neutron energy spectrum.The thermoluminescence field dosimeter comprises a thermoluminescence field dosimeter body, and the thermoluminescence field dosimeter body comprises a front-end assembly, a rear-end assembly and a center assembly located between the front-end assembly and the rear-end assembly; the center assembly and the rear end assembly are detachably connected with the front end assembly. Wherein the distance between the front surface of the central assembly and the front surface of the front end assembly is 1mm, the distance between the front surface of the rear end assembly and the front surface of the front end assembly is 7mm, and the front surface of the central assembly and the front surface of the rear end assembly are respectively provided with a 6LiF thermoluminescence dosage piece and a 7LiF thermoluminescence dosage piece. The thermoluminescence field dosimeter is wide in neutron energy response range, covers 0.0253 eV-20 MeV, can be suitable for neutron energy spectrum measurement of nuclear facilities such as fission reactors, fusion reactors and medical accelerators, and is particularly suitable for measurement in measurement occasions with narrow spaces and large neutron field gradients.

The invention relates to the technical field of radiation dose monitoring, in particular to an energy identification type thermoluminescence dosimeter. The detector comprises a shell, a detector carrier and a blocking mechanism, the detector carrier and the blocking mechanism are located in the shell, and the shell is worn on clothes through a clamping part; the detector carrier is rotationally arranged in the shell, a plurality of thermoluminescence detectors are arranged in the detector carrier, and in the energy identification type thermoluminescence dosimeter, the blocking mechanism is driven to rotate by utilizing inertia force generated when a wearer moves, so that the blocking mechanism can be far away from or close to the thermoluminescence detectors, and the energy identification type thermoluminescence dosimeter is more accurate in detection. According to the thermoluminescence dosimeter, the thermoluminescence detector is shielded and opened according to the state of a wearer, the intensity of ray irradiation on the thermoluminescence detector when the wearer does not wear the thermoluminescence dosimeter is reduced, and therefore the difference between the radiation quantity collected by the thermoluminescence dosimeter and the radiation quantity received by the worker is reduced as much as possible.

The invention belongs to the field of display panels, and provides a display panel and a display device.The display panel comprises a first substrate; the light-emitting units are distributed on one side of the first substrate in an array mode; the plurality of auxiliary light-emitting units are distributed between the adjacent light-emitting units, and the plurality of auxiliary light-emitting units comprise at least one of a photoluminescence unit, a thermoluminescence unit and a photoluminescence and thermoluminescence unit. Due to the fact that the auxiliary light-emitting units comprise at least one of the photoluminescence units, the thermoluminescence units and the photothermoluminescence units, the auxiliary light-emitting units can emit light under the action of illumination of ambient light and / or ambient temperature, the display brightness of the display panel is improved, the power of the light-emitting units does not need to be improved, and the display efficiency of the display panel is improved. Extra electric energy does not need to be provided, the energy consumption of the display panel cannot be increased, and the service life of the display panel cannot be influenced.

The utility model relates to the technical field of measuring instrument storage, in particular to a portable thermoluminescence dosage measuring instrument. The measuring instrument comprises an outer box and a measuring instrument body, a sliding drawing mechanism is arranged outside the outer box, the sliding drawing mechanism comprises a sliding cover arranged on one side of the outer box in a sliding mode, and the sliding cover and the measuring instrument body are fixedly arranged. According to the device, rapid taking and placing of the measuring instrument body are achieved through the sliding drawing mechanism, the sliding cover and the measuring instrument body are fixedly connected through the first fixing bolt, and by means of sliding fit of a sliding block and a sliding groove and detachable connection of a buckle, the measuring instrument body can be rapidly taken and placed. A user only needs to open the buckle and pull the sliding cover to pull the whole measuring instrument body out of the outer box, the tedious step that a traditional instrument needs to be separated from an anti-seismic structure is omitted, the operation process is greatly simplified, meanwhile, the sliding drawing mechanism has the limiting function, the relative stability of the measuring instrument body and the outer box in the carrying process is ensured, and the measuring instrument is convenient to carry. And the shaking risk is avoided.

The invention discloses a fire detection method and system applying an infrared flame detector, and relates to the technical field of intelligent sensors. The detection method comprises the following steps: deploying a multi-mode collaborative sensing node network in a target area, and transmitting multi-source sensing data in real time; starting a compensation mode in an over-limit area of the carbon dioxide concentration, and judging whether an initial alarm signal is generated or not; when an initial alarm signal is received, synchronously acquiring multi-source sensing data in the same acquisition period, and triggering a secondary judgment mechanism; the technical key points are as follows: the operation of the scheme not only ensures that the fire extinguishing system is not mistakenly triggered due to CO2 thermoluminescence under a complex thermal working condition so as to ensure the continuity of production, but also greatly retains the response capability to real burst flames under the condition of not sacrificing the safety, so that the whole scheme can adapt to extreme working scenes.

The present application relates to stress luminescence elastic film and stress distribution time-lapse imaging detection technical field, specifically relates to a kind of stress distribution time-lapse imaging film and its preparation method and application.The specific preparation method includes: Sr source, silicon dioxide, Eu source and Dy source are mixed using wet grinding, after drying, sintering is carried out at 1200 ℃-1300 ℃, then grinding is carried out, and mixed powder is obtained;Mixed powder and precursor mixture of elastic matrix are mixed, then heated and solidified, and stress distribution time-lapse imaging film is obtained.The present application mainly uses high-temperature solid-phase method to synthesize a special mixed powder, the mixed powder is co-doped with Eu 2+ And Dy 3+ And multiple elements, not only give the prepared stress distribution time-lapse imaging film the characteristics of thermoluminescence, but also significantly enhance its stress luminescence intensity, effectively solve the problem of low stress luminescence intensity of existing stress luminescence elastic film in time-lapse stress display.

A beryllium aluminate component may include a beryllium aluminate ceramic comprising 90 wt% or more beryllium aluminate. The ceramic may be characterized by one or more of: a thermal conductivity from 17 W / m·K to 175 W / m·K at room temperature; a bulk resistivity greater than 1 x 1015 ohm-cm at room temperature and / or greater than 1 x 109 ohm-cm at 700 ºC and / or greater than 1 x 1010 ohm-cm at 600 ºC; a coefficient of thermal expansion from 7.4 to 9.0 µm / (m·K) at room temperature; a near bioequivalence to human body tissue (Zeff) from 7.2 to 11.3; and a density of from 3.4 to 3.9 g / cc. The beryllium aluminate components may be used in pedestal assemblies, wafer pedestals, wafer chucks, integral resistance heaters, and / or components thereof, as well as for optically stimulated luminescence, thermoluminescence, radioluminescence, or dosimetry systems thereof. Processes for preparing the beryllium aluminate ceramic components are also disclosed.

A thermoluminescence sensor includes a thermo-responsive polymer composition, and a sealed transparent container that holds the thermo-responsive polymer composition. The thermo-responsive polymer composition contains a curcumin oil, and a cyano derivative of poly(phenylenevinylene) of formula (I).

The utility model discloses a self-luminous light-transmitting concrete safety warning inspection well cover which comprises a basin-shaped high-strength alloy shell arranged in a ground pit slot, a light-transmitting concrete layer serving as a light-transmitting material is placed in the high-strength alloy shell, a self-luminous assembly is arranged in the light-transmitting concrete layer, and the light-transmitting concrete layer is made of light-transmitting materials. An auxiliary light-emitting assembly is arranged at the position, connected with the high-strength alloy shell, of the bottom of the light-transmitting concrete layer, and the self-light-emitting assembly emits light at night through a temperature excitation material and supplements light through the auxiliary light-emitting assembly. The light-transmitting concrete is adopted, the light-emitting area is greatly increased, the scheme of single-point or partial light emitting in the prior art is improved, meanwhile, the PCM energy storage aggregate and the thermoluminescent crystal are matched to enable self-light-emitting at night, and then the auxiliary light-emitting assembly is matched to enable self-light-emitting to be achieved. And the temperature of the underground space is stably lower than that of the light-transmitting concrete layer, so that stable energy storage of the thermoelectric power generation sheet is realized, and further the failed thermoluminescent crystal can be supplemented with light through the LED lamp strip.

The utility model discloses a novel thermoluminescence irradiation device which comprises a supporting seat and a fixing mechanism, an irradiation module is fixedly installed on the fixing mechanism, and a feeding mechanism is fixedly installed at the top of the irradiation module and located on one side of the irradiation module. The top of the feeding mechanism is fixedly provided with a reading piece bearing mechanism for bearing and rotating materials, and the feeding mechanism drives the reading piece bearing mechanism to move towards the irradiation module. The radiation module is fixedly installed above the supporting seat through the fixing mechanism, then the arranged feeding mechanism can drive the reading piece bearing mechanism and the reading pieces needing to be processed to move towards the radiation module, the reading piece bearing mechanism can drive the reading pieces to rotate, and therefore the radiation module can be used for radiation of the reading pieces, and the reading pieces can be processed conveniently. The amplitude-isolating lead block and the amplitude-isolating lead ring arranged on the amplitude-illuminating module can be used for radiation protection, and the arranged sheet-pressing spring and the amplitude-illuminating sheet are pressed on the radioactive source, so that the gap of the radioactive source can be compressed.

The thermoluminescent dosimeter comprises a shell and an inner core, the inner core comprises a plurality of thermoluminescence elements, and the first thermoluminescence element and the second thermoluminescence element are arranged in the shell; a first upper window is arranged on the upper surface of the shell corresponding to the area of the first thermoluminescence element, and a second upper window is arranged on the upper surface of the shell corresponding to the area of the second thermoluminescence element; a first lower window is arranged on the lower surface of the shell in a region corresponding to the first thermoluminescence element, and a second lower window is arranged in a region corresponding to the second thermoluminescence element; a first upper filter disc is arranged on the first upper window, a first lower filter disc is arranged on the first lower window, a second upper filter disc is arranged on the second upper window, and a second lower filter disc is arranged on the second lower window; the first upper filter disc and the first lower filter disc are made of the same material; the second upper filter disc and the second lower filter disc are made of the same material; the material of the first upper filter disc is different from that of the second upper filter disc; and the first upper filter disc comprises high-molecular plastic or solid metal.

1. The name of the design product: high-precision thermoluminescence sheet batch detection screening instrument. 2. The use of the design product: mainly used in the laboratory, for different environmental sources of large quantities of thermoluminescence sheet detection and screening, qualitative measurement of its radiation intensity. 3. The design points of the design product: the combination of shape and color. 4. The picture or photo that best indicates the design points: perspective drawing. 5. The design for which protection is sought includes color.

The utility model relates to the technical field of applicator in cervical cancer radiotherapy, disclose a kind of verification cervical cancer after-loading radiotherapy real dose applicator, including applicator body and thermoluminescence detector.Applicator body includes guide tube and radioactive source support block, the one end of guide tube is used to connect with after-loading therapeutic instrument, radioactive source support block is fixedly connected with the other end of guide tube, and radioactive source support block is internally provided with the radioactive source cavity matched with the other end of guide tube, and installation groove is provided on the outer surface of radioactive source support block, and thermoluminescence detector is detachably installed in installation groove.It can improve the low problem of dose verification accuracy of conventional applicator in prior art.

1. The name of the product of this design: Thermoluminescent detector angular response irradiation device. 2. Purpose of this design product: used for testing the angular response performance of thermoluminescence detectors. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a semiconductor device, and relates to the technical field of semiconductors, the semiconductor device comprises a substrate, a semiconductor epitaxial layer, an electrode layer and a thermoluminescent layer, the semiconductor epitaxial layer is arranged on the substrate; the electrode layer is arranged on the side, away from the substrate, of the semiconductor epitaxial layer and comprises a source electrode, a drain electrode, a grid electrode, a grid electrode routing pad and a drain electrode routing pad; and the thermoluminescent layer is arranged on one side, far away from the substrate, of the semiconductor epitaxial layer, at least covers the channel region, exposes the gate routing pad and the drain routing pad, and is configured to absorb heat generated by the channel region and dissipate the heat in a luminous form. Compared with the prior art, the semiconductor device provided by the embodiment of the utility model has the advantages that the thermoluminescent layer is additionally designed, and the thermoluminescent layer can be heated to emit light, so that the heat generated by the channel region can be absorbed and dissipated in a light emitting manner, the heat dissipation effect can be improved, the junction temperature of a chip can be reduced, and the efficiency of the drain electrode can be maintained.

The application discloses a metal nanomaterial, in particular discloses a thermoluminescence color-changing metal nanomaterial, a preparation method and application thereof. The thermoluminescence color-changing metal nanomaterial exhibits a significant temperature-dependent characteristic in emission intensity under ultraviolet excitation. The thermoluminescence color-changing metal nanomaterial can be used as a nanometer fluorescence thermometer and has wide application in the technical fields of biological medicine, environmental monitoring and nanoelectronics.

The application provides a kind of porous crystalline material and its preparation method and application as variable temperature luminescent material, belong to metal organic framework material technical field.The molecular formula is: C 25 H 21 NO8PLn, wherein Ln is europium ion or terbium ion.The material contains dynamic molecular rotor module ligand H3TPO, and the energy level of the lowest excited singlet state (S1) and triplet state (T1) can be elastically adjusted with temperature change, and this characteristic makes isomorphic materials Eu-PO and Tb-PO exhibit rare and completely opposite thermoluminescence behavior.The application not only provides a new idea for regulating the energy level of dynamic antenna to construct artificial intelligent luminescent material, but also opens up a new direction for developing high-performance X-ray scintillators based on Ln-MOFs.

The utility model provides a mining intrinsic safety type wireless thermoluminescence light-operated sensor, which belongs to the technical field of mine safety monitoring, and comprises an installation mechanism, an intrinsic safety type wireless thermoluminescence light-operated sensor, an intrinsic safety type wireless thermoluminescence light-operated sensor, an intrinsic safety type wireless thermoluminescence light-operated sensor, and an intrinsic safety type wireless thermoluminescence light-operated sensor, the detection mechanism is arranged on the mounting mechanism and used for collecting infrared radiation signals in the environment, converting the infrared radiation signals into electric signals and outputting the electric signals; the control assembly comprises a sensor and a displayer, the sensor is electrically connected with the detection mechanism, and the displayer is arranged on the surface of the control assembly and used for displaying detection data. According to the utility model, the high-sensitivity pyroelectric detection mechanism, the modularized detachable connection structure and the low-power OLED display and wireless communication module are arranged, so that the detection precision, the environmental adaptability and the remote monitoring capability of the sensor are improved; therefore, the technical problems of single function, poor stability, low intelligent degree and the like of a traditional mining thermoluminescence light-operated sensor are effectively solved.

The invention discloses single Eu-doped perovskite fluorescent powder and a preparation method and application thereof, and belongs to the technical field of luminescent materials, the molecular formula is NaYSrWO6: xEu < 3 + >, and x is equal to 0.005-0.5. The preparation method comprises the following steps: weighing the raw materials according to the stoichiometric ratio, mixing and grinding, heating and preheating the obtained powder, quickly heating and calcining, and crushing and grinding after calcining to obtain the Eu-singly-doped perovskite fluorescent powder. The double-perovskite tungstate NaYSrWO6: xEu < 3 + > fluorescent powder provided by the invention can have both high-efficiency photoluminescence (PL) and thermoluminescence (TL) performances, and has application potential in the aspects of white light LED, real-time low-dose-rate accurate measurement and X-ray imaging.

The invention discloses a metal nano-material, and particularly discloses a thermoluminescent color-changing metal nano-material, a preparation method and application of the thermoluminescent color-changing metal nano-material. Under ultraviolet excitation, the emission intensity of the thermoluminescent color-changing metal nano material shows a remarkable temperature dependence characteristic. The nano fluorescent thermometer can be used as a nano fluorescent thermometer and has wide application in the technical fields of biomedical treatment, environmental monitoring, nano electronics and the like.

The utility model provides an LED structure for monitoring large current impact, and belongs to the technical field of LED device manufacturing. The LED structure comprises a support, a light-emitting diode chip, a lead, a thermoluminescent material, a photodiode chip, a resistor and an electrode, when the LED device is impacted by overcurrent, the resistor is affected by electric stress, the temperature rises, the thermoluminescent material coating the periphery is heated to emit light, light of the wave band is received by the photodiode chip to generate photo-generated current, and the photogenerated current is generated by the photodiode chip. After the circuit receives the feedback signal, the next step of protection action such as shunting or cutting off can be executed. A series of elements and chips are integrated in an LED structure, heat generated during large-current impact is converted into electric signals, and therefore the purpose of monitoring large-current impact is achieved. The over-current protection function of the circuit is realized; and the structure of the device is improved, system integration is facilitated, and the application range is wide.