88 results about "Cold cathode" patented technology

The embodiment of the invention discloses a cold cathode flat plate X-ray source capable of coding light emitting and a coding light emitting method, the ray source comprises a vacuum sealing cavity, a cathode assembly and an anode assembly, the cathode assembly and the anode assembly are arranged in the vacuum sealing cavity in a sealing manner, and the cathode assembly and the anode assembly are oppositely arranged at an interval; a vacuum working space for electron acceleration and X-ray generation is formed; the cathode assembly comprises a cathode substrate and a nano cold cathode electron source array arranged on the cathode substrate; the anode assembly comprises an anode substrate and a transmission anode target arranged on the anode substrate; wherein at least one of the nanometer cold cathode electron source array and the transmission anode target is in a coding state: when the nanometer cold cathode electron source array is in the coding state, the nanometer cold cathode electron source array comprises a micro-unit electron source array capable of independently addressing, and a preset coding pattern is formed; and when the transmission anode target is in a coding state, a metal coating with a preset coding pattern is formed on the surface of the anode substrate through a micromachining process so as to integrate a coding function.

The present invention provides a multi-directional connection hub including a plurality of openings to which an anode adapter made of a metal material is connected through an insulation tube and an electron gun which emits electrons to the anode adapter to generate X-rays is connected, wherein the openings include a plurality of side openings to which the electron gun is connected and an upper opening through which the X-rays generated by the electrons, which are provided from the electron gun through the side opening and collide with the anode adapter, are emitted, and an emission direction of the X-rays is changed toward another side opening of the plurality of side openings or the upper opening according to a type of the anode adapter and a type or installation location of the electron gun.

The embodiment of the invention provides a foil structure with a carbon nanotube and a preparation method thereof, a cold cathode and an X-ray tube, the foil structure comprises a metal substrate, the metal substrate is provided with a first surface and a first side surface, the first side surface is vertical to the first surface, and the first side surface is located at the edge of at least one side of the metal substrate; the bonding layer is located on the first surface of the metal substrate; the bonding layer is arranged on the first surface of the metal substrate, the multiple carbon nanotubes are located on the first surface of the metal substrate, the bonding layer is used for enhancing the bonding strength of the metal substrate and the multiple carbon nanotubes, the multiple carbon nanotubes comprise a carbon nanotube film and multiple discrete carbon nanotubes, the carbon nanotube film is located on the first surface, and the discrete carbon nanotubes are located on the second surface. The multiple discrete carbon nanotubes are located in the area, close to the first side face, of the first surface, at least the other part of the multiple discrete carbon nanotubes is located outside the carbon nanotube film, orthographic projections of the multiple discrete carbon nanotubes on the metal substrate are located outside the first surface, and the at least the other part of the multiple discrete carbon nanotubes protrude in the direction away from the metal substrate relative to the first side face.

The invention provides a cold cathode flat plate X-ray source and a control method, and relates to the technical field of X-rays. In the application, the cold cathode flat plate X-ray source comprises an anode substrate and a cathode substrate; the anode target material is arranged on the anode substrate; the cathode assembly is arranged on the cathode substrate and comprises a plurality of cathode blocks which are distributed in an array mode, each cathode block comprises a plurality of nanowire cold cathodes which are distributed in an array mode, and in the X-ray output process, the nanowire cold cathodes are arranged on each cathode block. And if at least one row of nanowire cold cathodes currently used for emitting electrons in the cathode block are abnormal, determining at least one row of nanowire cold cathodes without abnormality in the cathode block, and controlling the nanowire cold cathodes to emit electrons to the anode target material so as to generate X-rays. Based on the above content, the problem of low utilization rate of the cold cathode flat plate X-ray source in the prior art can be improved.

This invention provides a cobalt foam-carbon nanotube composite cathode material, its preparation method, and its applications, relating to the field of cathode material preparation technology. The composite cathode material of this invention is obtained by depositing a carbon nanotube array on a cobalt foam substrate. As a cold cathode material for field emission, this composite cathode material exhibits low turn-on and threshold electric fields, high current density, excellent field emission performance, and excellent current stability, meeting the performance requirements of field emission cathode materials. Furthermore, the preparation method of this composite cathode material is safe and simple. This invention provides a novel cathode material solution for high-performance, long-life vacuum electronic devices, with promising application prospects.

This invention relates to a cold cathode X-ray inspection system and method with eddy current detection function, used for defect detection and evaluation of composite materials with conductive and magnetic panels and pure metal materials of a certain thickness. The inspection system includes a cold cathode X-ray instrument, a DR receiving panel, and a laptop computer. In addition to the cold cathode X-ray detection board, the mainboard of the cold cathode X-ray instrument also has an eddy current detection board. The eddy current detection board and the cold cathode X-ray detection board share the built-in power supply unit and operation unit of the cold cathode X-ray instrument. A transparent flexible panel is added to the photosensitive element layer of the DR receiving panel. A transparent detection coil made of metal coating technology with an array arrangement is set on the transparent flexible panel. During the inspection, the cold cathode X-ray image of the inspected workpiece and the eddy current detection signal on the surface of the inspected workpiece can be acquired simultaneously. By comparing, fusing, and analyzing the two image signals, a complete and accurate inspection result is obtained.

The invention provides a carbon nanotube cold cathode, a preparation method thereof and an X-ray tube, and the preparation method of the carbon nanotube cold cathode comprises the following steps: carrying out ball milling on an agglomerated carbon nanotube to obtain carbon nanotube powder; mixing the carbon nanotube powder with a first solvent and an electrolyte solution, and performing ultrasonic oscillation to obtain a suspension; a metal substrate is placed in the suspension liquid for electrophoretic deposition, and the carbon nano tube thin film cold cathode is obtained; coating a curing agent on the carbon nano tube thin film cold cathode for cross-linking curing to obtain a cured carbon nano tube cold cathode; and enabling the carbon nano tube in the carbon nano tube cold cathode in the curing state to form a tip by utilizing a high-energy ion beam, and enabling the carbon nano tube to form an upright state by utilizing a high-strength electric field to obtain the carbon nano tube cold cathode in an activated state.

The invention relates to the technical field of ray detection, and particularly discloses a cold cathode ray machine digital control system based on high-frequency inversion and pulse modulation, which specifically comprises a master control and calculation module, a high-frequency high-voltage inversion and modulation module, a pulse driving and field emission control module and a precise sensing and acquisition module which are in communication connection with one another, a safety interlocking and state monitoring module; and a man-machine interface and communication module. According to the invention, a closed-loop control scheme of high-frequency inversion, pulse modulation and cathode state is provided for the first time, the problem of separation of independent operation of a power supply, a controller and an emitter of a traditional system is solved, and cross-module collaborative optimization is realized.

The application discloses a cold cathode ionization gauge driving and collecting circuit, and relates to the field of vacuum measurement, which solves the problems of signal conversion nonlinearity and excessive ion current when the gauge tube works at a lower vacuum degree in the existing cold cathode ionization gauge driving and collecting technology, and comprises the following parts: an ion current logarithmic collecting circuit, which is used for converting the ion current of the cold cathode ionization gauge into a voltage signal; a current monitoring circuit, which is used for generating a control signal according to the voltage signal; a voltage-controlled high-voltage driving circuit, which is used for driving the cold cathode ionization gauge according to the control signal; a nonlinear compensation operation conditioning circuit, which is used for performing nonlinear compensation on the voltage signal according to the control signal to obtain an operation collecting voltage; and the operation collecting voltage is used for inputting into a collecting system; the problem of signal conversion nonlinearity is overcome through the nonlinear compensation circuit, and the negative feedback loop control is performed through the current monitoring circuit and the voltage-controlled high-voltage driving circuit, so that the driving voltage of the gauge tube is reduced, and the maximum ion current is limited at a lower level.

The application belongs to the technical field of cold cathode trigger tube, and discloses a cold cathode trigger tube circuit simulation SPICE design method, which comprises the following steps: main gap channel design; trigger gap channel design; control module design; cold cathode trigger tube characteristic parameter verification and problem analysis; cold cathode trigger tube SPICE model improvement based on gas discharge theory and characteristic parameter verification; improved cold cathode trigger tube application simulation and result analysis. The cold cathode trigger tube SPICE model provided by the application meets the functions of the modern cold cathode trigger tube, and is verified by simulation; and different parameters of the model can be modified to meet the requirements of different scenes.

This invention discloses a novel welding machine, comprising: a welding frame, the welding frame including a support frame, a sealed door on the front of the support frame, a welding chamber at the upper end of the inner cavity of the support frame, and a welding table at the bottom of the inner cavity of the welding chamber. This invention belongs to the field of welding machine technology. The purpose of this invention is to solve the problems of traditional hot cathode electron beam welding machines in the prior art, where the hot cathode requires continuous preheating, has a long start-up time, and still needs to maintain a high temperature in standby mode. The technical effect achieved is: using a directional carbon nanotube array microbeam emitter as a cold cathode, utilizing the field emission principle of carbon nanotubes, an electric field is applied between the grid and the cathode to allow electrons to escape from the tip of the carbon nanotube through quantum tunneling effect, without heating the cathode to a high temperature, achieving millisecond-level instantaneous start-up, solving the drawback of traditional welding machines requiring 5-10 minutes of preheating, and significantly improving work efficiency and equipment response speed.

The invention discloses a carbon nanotube cold cathode-based miniature vacuum relay and a pulse driving control method thereof, and belongs to the technical field of vacuum relays. The problem that the performance and the application range of an existing method are limited is solved, current, voltage, temperature and vacuum degree data are obtained in real time, deep analysis is conducted on the collected data through a neural network model, and optimal pulse parameters are accurately predicted; the output of the pulse generator is dynamically adjusted according to the predicted pulse parameters, so that the carbon nanotube cold cathode can stably and efficiently emit electrons, the performance of the relay is optimized, and the response speed and reliability of the relay are improved; meanwhile, the circuit state is monitored in real time, once abnormal conditions such as over-current, over-voltage or short circuit are detected, a protection mechanism is triggered immediately, a power supply is cut off or current / voltage is limited, an operator is reminded through an alarm signal, circuit damage is effectively prevented, and safe operation of the system is guaranteed.

The application discloses a double-wire additive gun body based on cold cathode electron beam internal wire melting additive manufacturing, which comprises an anode, an insulator, an internal cathode, an external cathode, a ring-shaped wire nozzle, a discharge cavity, an upper joint plate, a wire guide pipe, a pipe for cooling the cathode and a high-voltage power supply; the anode is internally provided with the insulator, the lower middle part of the insulator is provided with the internal cathode, the external cathode is annular and connected with the lower part of the insulator; the insulator is internally provided with through holes for the two wire guide pipes, a water cooling channel, a gas feeding channel and a high-voltage power supply channel, the ring-shaped wire nozzle arranged at the lower end of the insulator is a conical tubular with a wide upper part and a narrow lower part, the pipe wall surface of the ring-shaped wire nozzle is provided with a wire feeding channel communicated with the wire guide pipe, the wire feeding double channels in the ring-shaped wire nozzle make the wire passing through point to the annular electron beam focal point, and the discharge cavity is formed between the internal cathode, the external cathode, the ring-shaped wire nozzle and the lower part of the anode shell. The application realizes multiple special functions of parts and adopts double wires to carry out internal wire melting additive manufacturing.

This application relates to the field of detection and discloses a cold cathode ray control method, device, medium, and product. The method includes: acquiring operating parameters and environmental parameters of a cold cathode device, and calculating equivalent cathode work function parameters; comparing the operating parameters, environmental parameters, and equivalent cathode work function parameters with preset target parameters in real time, and calculating control deviation values; using the control deviation values, equivalent cathode work function parameters, and operating parameters as input features, inputting them into a neural network control algorithm that constructs a physical constraint layer, calculating and outputting a gate drive signal and a focusing coil drive signal; calculating a voltage compensation amount based on the evolution trend of the equivalent cathode work function parameters, and using the voltage compensation amount to combine with the gate drive signal to generate a final drive command; applying the final drive command and the focusing coil drive signal to the cold cathode device, and repeating the above steps to ensure that the real-time acquired ray intensity meets the requirements of the preset target parameters.

The invention discloses a cold cathode ray detection control system, which comprises a ray tube with a cold cathode, a power supply module and a control module for modulating and boosting the power supply module and providing excitation X-rays for the ray tube for detection, and the control module comprises a master control and calculation module MCC, the master control and calculation module MCC is in bidirectional communication connection with a high-frequency high-voltage inversion and modulation module HFHI, a pulse driving and field emission control module FDEC, a precision sensing and acquisition module PSA, a safety interlocking and state monitoring module SISM and a man-machine interface and communication module HCI through a high-speed digital control bus. According to the invention, through algorithm optimization, the corresponding delay is suddenly reduced from the traditional 100us level to below 5us, the speed is obviously increased, and pulse-level real-time regulation and control can be realized; meanwhile, current and voltage precision adjustment is also remarkably improved, and accurate and stable output of dosage can be realized.

1. The name of the design product: compact cold cathode ray machine. 2. The use of the design product: the design product is a cold cathode ray machine. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to a device and a method for manufacturing a heterogeneous alloy structure through ultrasonic regulation and control electron beam additive manufacturing, in particular to an electron beam additive manufacturing device for feeding wires through a main shaft and a shaft side and regulating and controlling element diffusion and phase generation in combination with an ultrasonic field effect and a forming method of the electron beam additive manufacturing device. According to the electron beam + double-wire + ultrasonic synergetic additive manufacturing method and system, in the wire bundle coaxial cold cathode electron beam fuse additive manufacturing process, an ultrasonic auxiliary system is introduced to act on a forming base plate, dynamic regulation and control over the heterogeneous alloy element mixing behavior and the structure evolution process in a molten pool are achieved, and therefore the mechanical performance of the molten pool is improved. The problems of coarse grains, uneven structures and performance fluctuation in the heterogeneous alloy deposition process are solved, structure refinement and component homogenization are achieved, and the overall service performance of a deposition component is improved.

The invention relates to the technical field of terahertz generators, in particular to a terahertz wave generator of a carbon nanotube-graphene heterojunction cold cathode, which comprises a contact part, a displacement device is slidably mounted at the side end of the contact part, and a heat dissipation fan is fixedly mounted at the top end of the contact part. The displacement device comprises a terahertz wave generator, connecting rods and a matching plate, the connecting rods are symmetrically and fixedly installed at the top end of the terahertz wave generator, the terahertz wave generator is fixedly installed at the side end of the matching plate, and the contact component comprises a butt joint device, a cleaning device, a shunting device, a positioning device and a supporting substrate. The positioning device is fixedly installed at the top of the side end of the supporting base plate, the flow dividing device is fixedly installed at the top end of the positioning device, and the butt joint devices are slidably installed on the two sides of the positioning device. Through the arrangement of the displacement device and the contact device, the purpose of integrating rapid installation and rapid cooling of the terahertz wave generator is achieved.

The invention provides a carbon nanotube cold cathode miniature vacuum sensor and a field emission current response detection method thereof, and relates to the technical field of micro-nano sensing and vacuum metrology, the sensor comprises an insulating substrate, a cold cathode array is arranged on the insulating substrate, an anode electrode is arranged on the insulating substrate through an insulating pillar corresponding to the cold cathode array, and the anode electrode is connected with the cold cathode array. A glass cover plate is arranged on the insulating substrate, the cold cathode array and the anode electrode are covered by the glass cover plate to form a vacuum cavity, and the cold cathode array and the anode electrode are connected with a signal acquisition and processing module; the method comprises the steps of applying pulse voltage, collecting field emission current, carrying out noise reduction processing on the collected field emission current, carrying out temperature compensation on the field emission current after noise reduction processing, and carrying out vacuum degree calculation based on the compensated field emission current. The vertical electric field configuration design and the deep learning algorithm are fused, the performance boundary of a traditional vacuum sensor is broken through, a good technical effect is achieved, and use is convenient.

A radiation source includes a radiation tube having a cathode which is a cold cathode. An imaging control unit directs the radiation source to intermittently and alternately emit the first radiation having a first energy distribution and the second radiation having a second energy distribution different from the first energy distribution whenever a rotation mechanism rotates the radiation source and a radiation detector by a preset angle. The imaging control unit directs the radiation detector to output a first projection image based on the first radiation and a second projection image based on the second radiation which are obtained by the intermittent emission of the first radiation and the second radiation. An image processing unit generates a tomographic image on the basis of the first projection image and the second projection image.

The application provides a double-layer field emission cold cathode electron source and a manufacturing method thereof, relates to the field of nano-electronic technology, and the double-layer field emission cold cathode electron source comprises, from bottom to top, a first cathode, an insulating layer, a second cathode and a gate electrode; the first cathode comprises a conductive substrate and a first layer of field emission body, and the first layer of field emission body is arranged on the upper surface of the conductive substrate; the second cathode comprises a conductive grid and a second layer of field emission body, and the second layer of field emission body is arranged on the upper surface of the conductive grid; by increasing the effective emission area of the cold cathode emission body, the field emission current and the current density are improved; the manufacturing method is simple, has high universality and high repeatability, is beneficial to the current improvement of the field emission electron source, and provides a feasible scheme for promoting the application of the large-current electron source in vacuum microelectronic devices.

The application discloses a cold cathode micro-focus X-ray tube based on double electrostatic lenses, and belongs to the technical field of X-ray tubes.The cold cathode micro-focus X-ray tube comprises a shell, a window, an anode assembly and a cathode electron gun assembly.The anode assembly comprises an anode target.The cathode electron gun assembly comprises a cathode cylinder, a cathode, a grid, a first focusing electrode, a second focusing electrode, a third focusing electrode, an electrode core column, an electrode lead and field emission material in the cathode cylinder.The field emission material generates electrons under the action of field emission, the formed electron beam is converged for the first time under the action of the first electrostatic lens, a first focus is formed, the electron beam is converged for the second time under the action of the second electrostatic lens, a second focus is formed, and finally the anode target is bombarded to generate X-rays.The cold cathode micro-focus X-ray tube improves the converging compression capacity of the electron beam by forming double electrostatic lenses, the size of the converging focus is reduced without affecting the emission area, and the resolution of the X-ray tube is improved.

A cold cathode Penning ion source with a variable suction electrode structure comprises a shell, a variable suction electrode, a cathode, an anode discharge cavity, a permanent magnet, an insulating material and a plurality of gas delivery pipes, the insulating material is lined in the shell, the anode discharge cavity and the cathode are both arranged in the shell, the permanent magnet is arranged in the shell and arranged around the anode discharge cavity as the center, and the gas delivery pipes are arranged in the shell. The gas delivery pipes are arranged at the tail end of the anode discharge cavity, the variable suction electrode is arranged at the head end of the anode discharge cavity and comprises a base, a plurality of variable suction electrode blades and a driving device, the variable suction electrode blades are arranged along the circumference of the base, the top ends of the variable suction electrode blades point to the axis direction of an ion beam in the anode discharge cavity, and the driving device is arranged on the base. And the driving device enables the variable suction electrode blades to rotate and adjust relative to the base so as to change the opening and closing angles of the variable suction electrode blades. According to the invention, beam adjusting equipment and an independent gas distribution device do not need to be additionally arranged, and the adaptability, flexibility and beam quality of the ion source are improved.

The invention is suitable for the field of health detection and life prediction of the whole life cycle of an MEMS capacitor film, and provides an MEMS capacitor film vacuum gauge diaphragm life prediction system based on deep learning. The device comprises a molecular pump set, a first vacuum valve, a second vacuum valve, a first cold cathode ionization vacuum gauge, a second cold cathode ionization vacuum gauge, a first vacuum chamber, a second vacuum chamber, a third vacuum chamber, a first LCR digital bridge, a second LCR digital bridge, a first MEMS diaphragm chamber, a second MEMS diaphragm chamber, a temperature control box, an upper computer, a controller and an electromagnetic valve. According to the method, more reliable life prediction can be realized, and better robustness is achieved. According to the method, test equipment does not need to be developed, the method can be realized through conventional equipment and methods, the evaluation accuracy is high, the efficiency is high, and the operation is convenient and simple.

The invention relates to an air-cooled cathode open type fuel cell system and a working method thereof, a condensation dehumidifier is integrated in an electric pile of the air-cooled cathode open type fuel cell system, an ultrasonic atomizer is arranged in a fan, and the fan and a condensation heat exchanger are oppositely arranged on two sides of the electric pile; a hydrogen source is connected with a condensation heat exchanger, a hydrogen outlet of the condensation heat exchanger is connected with a vortex tube, a cold end outlet of the vortex tube is connected with a condensation dehumidifier inlet of a galvanic pile, and a condensation dehumidifier outlet of the galvanic pile and a hot end outlet of the vortex tube are connected together through a pipeline and then jointly connected with an anode inlet of the galvanic pile; a liquid water outlet of the condensing heat exchanger is connected with a liquid water collector; the anode outlet of the galvanic pile is also connected with the liquid water collector, and the liquid outlet of the liquid water collector is connected with the ultrasonic atomizer in the fan. By forming a closed-loop system of'condensate water recovery-atomization-humidification ', the humidity of the cathode of the galvanic pile is regulated and controlled, a traditional complex external humidification device is replaced, and energy conservation and consumption reduction can be remarkably achieved while the humidification efficiency is improved.

This application relates to the field of cold cathode field emission material preparation technology, and discloses a method for preparing a graphene-diamond composite structure to improve the field emission performance of diamond. The method involves first dispersing nanodiamonds and graphene oxide in a deep eutectic solvent; then adding boric acid to induce an in-situ sol-gel transformation under heating, forming a gel network that locks the dispersed phase; followed by microwave-assisted interface activation and gradient high-temperature carbonization, and finally cleaning and drying to obtain the product. This invention effectively suppresses phase separation and agglomeration during pyrolysis through a gel solidification mechanism, and utilizes the deep eutectic solvent and boric acid pyrolysis to achieve in-situ co-doping of nitrogen and boron, constructing a low-barrier continuous conductive channel on the diamond surface, and realizing tight electrical interconnection between components. This method is simple and controllable, and the resulting composite material possesses excellent conductivity, low turn-on electric field, and high emission stability, thus improving the electron emission efficiency of cold cathode devices.

The invention relates to the technical field of electrostatic protection and monitoring and carbon nanotube material application, and discloses a flexible carbon nanotube cold cathode electrostatic safety monitoring system and device. A central processing unit, a multi-dimensional data acquisition module, a data analysis module, a judgment module, an early warning module, a parameter adjustment module, a fault diagnosis module, a data storage module and a communication module are established, and the central processing unit ensures efficient cooperation of all the modules; the multi-dimensional data acquisition module provides original data; the data analysis module is used for realizing quantitative analysis on key indexes; the judgment module accurately recognizes problems existing in the system; the early warning module sends out warning information in time; the parameter adjusting module optimizes the running state of the system; the fault diagnosis module quickly locates a fault source; the data storage module provides data support for subsequent analysis; and the communication module ensures bidirectional smooth transmission of data, and finally, the system achieves the beneficial effect of safely, accurately and efficiently monitoring and managing static electricity of the flexible carbon nanotube cold cathode in real time.

This invention belongs to the field of non-destructive testing equipment technology, and specifically relates to a cold cathode X-ray flaw detector for pipelines. It includes a cold cathode X-ray emitting module and a pipeline crawler. The bottom end of the cold cathode X-ray emitting module is fixedly connected to the top end of the pipeline crawler. A heat insulation box is fixedly connected to the top end of the pipeline crawler, and a temperature regulating mechanism is fixedly connected to the inner wall of the heat insulation box. A rectangular mounting hole is opened at the top end of the heat insulation box, and a U-shaped block is fixedly connected to the wall of the rectangular mounting hole. A support rod and a pad are fixedly connected to the inner wall of the U-shaped block. This invention enables the cold cathode X-ray flaw detector to not only have temperature regulation and limiting functions to prevent displacement of the pipeline crawler, but also improves the cold cathode X-ray flaw detector's resistance to harsh environments, further enhancing the reliability of the cold cathode X-ray flaw detector's operation and the accuracy of the test results. It can meet the needs of non-destructive testing of large-size pipeline welds in different seasons.

This invention relates to a cold cathode Penning source neutron tube, comprising: a neutron tube target, an accelerating electrode, an ion source housing, an extraction cathode, an anode cylinder, a counter cathode, a magnet assembly, a storage device, a tube body, a target base, and an ion source base. The target base and the ion source base are disposed on the left and right sides of the tube body, and the neutron tube target, the accelerating electrode, and the ion source housing are arranged sequentially from the target base to the ion source base. The ion source housing covers the extraction cathode, the anode cylinder, the counter cathode, the magnet assembly, and the storage device. The magnet assembly is installed in the space formed by the ion source housing and the storage device, and the magnet assembly simultaneously generates axial and radial magnetic fields. This invention uses a magnet assembly capable of simultaneously generating axial and radial magnetic fields, solving the problems of low yield and short lifespan of existing neutron tubes.

The embodiment of the application relates to the technical field of security inspection, and discloses a cold cathode X-ray luggage security inspection instrument, a control method and a program product; the security inspection instrument comprises a cold cathode X-ray source and a conveying unit; the method comprises the following steps: acquiring load data and shape size data of a detected object, and monitoring conveying speed of the conveying unit in real time; calculating an equivalent density parameter of the detected object according to the load data and the shape size data; determining basic working parameters of the cold cathode X-ray source according to the equivalent density parameter; adjusting a negative secondary high-voltage amplitude in a negative secondary high-voltage circuit; simultaneously adjusting an output amplitude of a positive high-voltage circuit; performing dynamic exposure compensation on the cold cathode X-ray source according to the conveying speed; adjusting a duty cycle of a positive high-voltage output in the positive high-voltage circuit in real time; during beam emission of the cold cathode X-ray source, collecting high-energy signals and low-energy signals penetrating through the detected object, and generating an X-ray image, so that imaging quality is ensured, and device power consumption is significantly reduced.