22 results about "Radiation hazard" patented technology

The present application relates to a combined inner core for nuclear medicine, comprising inner core assemblies, each of which is provided with at least one aperture of a hot spot hole; the inner core assemblies can be combined at will so that the combined inner core has at least six apertures of hot spot holes. A phantom structure is also provided, comprising a barrel body, the above-mentioned combined inner core and a barrel cover. An automatic bubble-free perfusion method for the phantom structure by means of an automatic perfusion device is also provided. The combined inner core of the present application is flexible to use, and can obtain the required resolution information in a single resolution evaluation. The cumbersome process of replacing the inner core and re-perfusion is avoided. The inner core assemblies of the present application are easy to process, saving production cost and time cost. The perfusion method enables the operator to minimize the risk of possible radiation hazards.

The invention discloses a radiation hazard source identification method with a low counting rate, and relates to the technical field of nuclear technology application. Comprising the following steps: establishing a nuclide library containing radionuclide information; setting a peak position interval corresponding to each radionuclide based on the nuclide library; carrying out statistics on the peak position count of the peak position interval and the high-energy area count of the high-energy area, and caching the peak position count and the high-energy area count obtained through statistics as environment background data; estimating parameters according to the cached environment background data; acquiring a peak position counting rate and a high-energy region counting rate in real time; according to the parameters, the peak position counting rate and the high-energy region counting rate which are obtained in real time, the probability that the peak region is abnormal is calculated; performing early warning sequential test on the abnormal probability of the peak region; and comparing a result of the early warning sequential test with a preset early warning threshold value, and if the result reaches the early warning threshold value, outputting early warning information and identifying a corresponding radiation hazard source. According to the invention, rapid early warning and hazard source identification of abnormal radiation data are realized.

The invention provides a fault protection system and method for an MOPA structure fiber laser. Wherein the system comprises: an amplification stage; a main seed source; the detection module is used for monitoring the working state of the amplification stage in real time, determining a fault position in the amplification stage and generating a fault trigger signal when an abnormality is monitored; and the protection module is used for blocking an input light path and an output light path of the fault position through the isolation sub-module within a preset response time after receiving the fault trigger signal, and providing alternative seed light for a downstream amplifier through the seed supply module if the downstream amplifier exists at the fault position, so that the fault position is detected. And at least closing the amplifier corresponding to the fault position through the closing sub-module. According to the invention, the amplifier at the fault position is isolated, signal injection and intelligent closing of the downstream amplifier are maintained, and effective protection of bidirectional amplified spontaneous emission hazards is realized.

The present application relates to the technical field of accelerator radiation protection, and particularly relates to a method for evaluating induced radioactivity suitable for mobile accelerator components; the method is characterized in that the activity concentration of radionuclides in different regions of the accelerator components before movement is calculated by using Monte Carlo simulation software, then the radionuclides are taken as radiation source terms, and the three-dimensional spatial dose rate distribution of the components and the periphery when the position of the accelerator components changes is calculated, so that the rapid evaluation of the dose received by the staff during maintenance and the rapid formulation of the maintenance scheme are realized. The method effectively promotes the application of the Monte Carlo method in the field of accelerator radiation protection, provides a reference for the radiation hazards received by the staff, and provides technical support for the radiation protection and operation and maintenance of the accelerator.

The present disclosure provides a control method and device of a mobile device, the mobile device and a storage medium. The method comprises: obtaining relative spatial state information of a user and the mobile device, determining antenna configuration information according to the relative spatial state information, and configuring an antenna array in the mobile device according to the antenna configuration information. The method can reduce the radiation hazard of millimeter waves generated by antenna communication to the human body, improve the communication quality and reduce the communication power, and further improve the control effect of the mobile device.

The application provides a kind of chip-level positioning method of orthopedic surgery navigation based on UWB, installs UWB chip-level wireless positioning module on surgical instrument, the biggest advantage of UWB wireless positioning module is that its bandwidth is wider, so it has good anti-interference, only need to communicate with base station and module in the positioning tracking stage to obtain the spatial position of surgical instrument relative to patient, the wireless positioning technology based on UWB is very mature at present, there are diversities in intraoperative visualization means, can be through mobile phone, tablet computer and other equipment to pay attention to the operation state.Compared with the existing optical positioning system, the application has good robustness, high cost performance, strong real-time performance and other advantages.The large bandwidth of UWB ensures low transmission power.In short-range wireless communication applications, the UWB signal power transmitted by the transmitter is less than 1mW, which greatly prolongs the battery life, ensures a longer system working time, and also has less radiation hazard to the human body.

The invention belongs to the technical field of radiochemistry, and particularly relates to an automatic preparation device of a gel type nuclide generator. Comprising a control system, a target cutting system, a stirring reaction system, a filtering and drying system and a washing and column loading system, the control system is connected with the target cutting system, the stirring reaction system, the filtering and drying system and the washing and column loading system so as to send an operation instruction; the target piece cutting system is used for cutting a target tube filled with radioactive substances; the stirring reaction system is communicated with the target cutting system and is used for enabling the radioactive substance and the raw material solution to react to generate a gel solution; the filtering and drying system is communicated with the stirring reaction system and is used for preparing the gel solution into gel particles; and the washing and column loading system is communicated with the filtering and drying system and is used for washing the gel particles, extracting the gel particles and filling the gel particles into the separation column. By using the device, human influence factors in the preparation process are reduced, the repetition rate of generator preparation is improved, the working efficiency is improved, and radiation harm to operators is avoided.

The utility model relates to the technical field of anti-radiation shielding, in particular to an anti-radiation shielding device of medical imaging equipment. The utility model provides an anti-radiation shielding device for medical imaging equipment, which can give an alarm prompt when detecting that the radiation level exceeds a preset value, is convenient for related personnel to take actions quickly, and reduces potential radiation hazards to the greatest extent. An anti-radiation shielding device of medical imaging equipment comprises a mounting frame, an anti-radiation plate and the like, and the mounting frame is connected with the anti-radiation plate. The radiation level in the environment is monitored in real time through the radiation detector, once the detected radiation level exceeds a preset safety threshold value, the alarm lamp is immediately started to send visual and sound alarm signals to on-site personnel, and the purpose of giving an alarm prompt when the detected radiation level exceeds the preset value is achieved. Related personnel can take actions rapidly and conveniently, and potential radiation hazards are reduced to the maximum extent.

This utility model discloses an automatic drug delivery device, relating to the field of reagent injection technology. The automatic drug delivery device includes: a shielded housing forming a first shielded cavity; and a reagent injection assembly, at least a portion of which is disposed within the first shielded cavity. The reagent injection assembly is adapted to connect to a reagent bottle and an infusion device, serving to connect the reagent bottle and the infusion device, and also driving the reagent within the reagent bottle to flow along the reagent injection assembly. This simplifies the injection process and reduces injection costs. The fact that at least a portion of the reagent injection assembly is disposed within the first shielded cavity provides shielding, thereby reducing the radiation hazards of the reagent within the assembly to staff and patients, and effectively protecting their safety.

The utility model discloses an array weak magnetic probe welding seam detection device, which belongs to the technical field of nondestructive testing, and comprises a push rod, the surface of the push rod is rotatably connected with a universal joint assembly, the surface of the universal joint assembly is provided with a carriage, the inner wall of the carriage is provided with a non-magnetic rotary encoder, and the non-magnetic rotary encoder is connected with the push rod. The problems that an existing welding seam detection technology has many limitations, although ultrasonic detection has a certain effect on internal defect detection, the sensitivity of surface and near surface defect detection is poor, the result is greatly influenced by experience of detection personnel, internal defects can be clearly presented through ray detection, radiation hazards exist, the cost is high, and the detection efficiency is high are solved. The weak magnetic field detection device solves the problems that the existing weak magnetic field detection device has strict requirements on the detection environment, workpieces need to be cleaned after detection, and in addition, the existing weak magnetic field detection device also has defects, part of probes are unreasonable in structural design, low in detection efficiency and difficult to meet large-scale rapid detection requirements.

The invention discloses automatic liquid separation equipment and a liquid separation method. The automatic liquid separation equipment comprises an anti-radiation shell, and a feed liquid shielding chamber, a waste liquid shielding chamber and a detector shielding chamber are arranged in the anti-radiation shell at intervals; the liquid separation plate is arranged at the top of the anti-radiation shell, a feed liquid storage cavity, a waste liquid recovery cavity and a mounting hole are formed in the bottom of the liquid separation plate, the feed liquid storage cavity is located in the feed liquid shielding chamber, and the waste liquid recovery cavity is located in the waste liquid shielding chamber. The device has the beneficial effects that the liquid separation plate is arranged at the top of the anti-radiation shell, the feed liquid supply assembly and the saline water supply assembly supply feed liquid and saline water into the confluence device respectively, the saline water pushes the feed liquid to advance, and the feed liquid is conveyed to the activity detector for activity detection; the valve assembly controls the flow direction of the confluence liquid according to the detection result of the activity detector and judges the dosage of the needed liquid medicine, activity detection, dosage confirmation and liquid separation operation are automatically completed in the radiation shielding space, the medicine taking precision is improved, and the radiation hazard risk is reduced.

The application provides a detection method for a pipeline path in a soft package battery cell test fixture, and the detection method comprises the following steps: scattering ferromagnetic particles on a specified surface of the test fixture; injecting a magnetic fluid into a pipeline of the test fixture; and blowing air to the ferromagnetic particles to remove the ferromagnetic particles that are not attracted by the magnetic fluid, and the area of the ferromagnetic particles remaining on the specified surface is the area of the pipeline. The detection method uses the magnetic fluid and the ferromagnetic particles to achieve the purpose of detecting the pipeline path, and the magnetic fluid and the ferromagnetic particles do not have radiation effects and do not depend on the high temperature of the fluid, thereby effectively avoiding radiation hazards or scalding risks to the operator's body.

The embodiment of the invention provides an emergency replacement system and an equipment replacement method, which can isolate radioactive atmosphere generated when target equipment is replaced so as to prevent radioactive substances from leaking, and can clean the detached target equipment so as to prevent the target equipment from causing irradiation harm to workers. The emergency replacement system comprises a sealing isolation device, a shielding isolation cover, a dismounting replacement device and a cleaning device. The sealing isolation device is arranged outside the shielding chamber, covers the shielding wall body and target equipment with faults, and is used for forming a closed working space between the sealing isolation device and the shielding wall body. And the remote controller is arranged outside the sealing isolation device. And the dismounting and replacing device is arranged in the working space, is in communication connection with the remote controller, and is used for dismounting the target equipment which breaks down under the control of the remote controller and mounting new target equipment. And the cleaning device is arranged in the working space.

The utility model discloses a special tool for the quick cleaning of the top sealing surface of a nuclear power plant annular container, comprising an annular frame, an annular groove is formed in the interior of the annular frame, a rotating gear ring is movably connected in the interior of the annular groove, a rotating drive assembly is installed on the annular frame to drive the movement of the rotating gear ring, a first electric telescopic rod is installed at the bottom end of the rotating gear ring, and a rotating assembly is installed at the telescopic end of the first electric telescopic rod. In the utility model, the special tool can realize remote cleaning, and the cooperation of multiple components maintains a certain working distance from the sealing surface, greatly shortens the irradiation time of personnel, liberates the working personnel from the high radiation environment, effectively reduces the radiation hazard, and guarantees the life and health of the working personnel. The special tool can precisely fit the complex profile of the sealing surface through a precision mechanical structure, and the cleaning efficiency is several times higher than that of manual cleaning.

The application discloses a surgical path planning method, system, device, medium and surgical operation system, and the method comprises the steps of constructing a digital twin human body model based on the associated parameters of a target object; acquiring the current contour information of the target object to construct a human body three-dimensional model; registering the digital twin human body model and the human body three-dimensional model to obtain a registration result; determining an initial surgical path planning of a target organ in the digital twin human body model; and converting the initial surgical path planning into a target surgical path planning corresponding to the target organ in the human body three-dimensional model. The application adopts an interventional surgery planning based on a 3D digital twin human body model of a meta universe, effectively improves the accuracy and efficiency of the determination of the interventional surgery path planning, guarantees the safety and reliability of subsequent actual surgery execution, simplifies the whole work flow of the interventional surgery from surgery planning to surgery execution, improves the visual sense and experience of the doctor in surgery planning, and avoids unnecessary errors and radiation hazards.

The present application relates to the technical field of neutron activation and discloses a power supply based on neutron activation and a preparation method thereof, the power supply comprising a to-be-activated radioactive source layer and a transduction layer, the to-be-activated radioactive source layer having to-be-activated particles capable of being activated into radioactive particles by neutrons, and the transduction layer being arranged on the to-be-activated radioactive source layer in the thickness direction of the to-be-activated radioactive source layer. The power supply can overcome the technical problem of how to avoid radiation hazards in the process of preparing the power supply, a non-radioactive (non-source) power supply is prepared first, and then activated into a source battery through neutron irradiation, so that the risk of radioactive substances can be avoided.

The application discloses a low-reflection remote control system of a myocardial minimally invasive rotary cutter, which comprises a controller, an instruction input module, an air source, a pneumatic control mechanism and a plurality of pneumatic buttons, the pneumatic control mechanism is provided with an air inlet end and a plurality of air outlet ends which are equal in number to the pneumatic buttons and one-to-one corresponding, the air inlet end of the pneumatic control mechanism is communicated with the air source, the plurality of air outlet ends of the pneumatic control mechanism are respectively communicated with the air inlets of the corresponding pneumatic buttons, the instruction input module and the pneumatic control mechanism are respectively electrically connected with the controller, the instruction input module is used for sending instructions to the controller, and the controller controls the pneumatic control mechanism to inflate or deflate any pneumatic button, so that the pneumatic button is pressed or released. The low-reflection remote control system can enable a tester to remotely operate the myocardial minimally invasive rotary cutter, thereby avoiding the tester from suffering from radiation hazards in the process of radiation emission and radiation immunity tests and avoiding disturbance to a test field.

The application relates to an electromagnetic positioning tracking system for medical navigation, comprising a magnetic field generator, a reference calibrator, a tracking sensor and a tracking processing terminal; the magnetic field generator is used for generating a magnetic field which simultaneously covers the reference calibrator and the tracking sensor; the reference calibrator is placed outside a patient's body and is used for sensing a magnetic field signal; the tracking sensor is used for following the movement of a medical device placed in the patient's body and sensing a magnetic field signal; the tracking processing terminal determines the position and posture information of the reference calibrator and the tracking sensor in the coordinate system of the magnetic field generator according to the magnetic field signals sensed by the reference calibrator and the tracking sensor; the position and posture information of the tracking sensor in the reference coordinate system relative to the reference calibrator is calculated again; and real-time positioning tracking of the tracking locator is carried out according to the position and posture information of the tracking sensor in the reference coordinate system. The application realizes the tracking positioning of the medical device placed in the patient's body, has high accuracy, no radiation hazard and is easy to implement and popularize.

This invention discloses a method for assessing the radiation hazard of a vacuum interrupter based on spectral distortion correction, belonging to the field of high-voltage testing and radiation detection protection technology. It includes the following steps: Step S1, obtaining the geometric parameters of the vacuum interrupter and calculating the spatial reference measured energy spectrum; Step S2, calculating the equivalent penetration thickness factor of X-rays within the main shield of the vacuum interrupter based on the spatial observation angle, and constructing a spatially related shield self-absorption attenuation matrix based on the equivalent penetration thickness factor of X-rays within the main shield of the vacuum interrupter. This invention provides a method for assessing the radiation hazard of a vacuum interrupter based on spectral distortion correction. Through external energy spectrum measurement and spectral reconstruction, and direct table lookup calculation of human tissue doses based on international standard conversion coefficients, it achieves a three-dimensional, accurate, and rapid quantitative assessment of the actual radiation hazard to the human body under specific high-voltage operating conditions.

The invention relates to scoliosis screening, in particular to millimeter wave scoliosis screening equipment self-adaptive to the height of a human body and a working method thereof.The equipment base is fixedly provided with a lifting lead screw mechanism, the front side of the lifting lead screw mechanism is fixedly provided with a millimeter wave assembly, and a platform is used for detecting whether the standing posture of a to-be-detected person meets the requirement or not; after the movable case judges that the standing posture of the to-be-detected person meets the requirement, the height and back data of the to-be-detected person are collected through the optical camera, and the millimeter wave assembly is driven to be adjusted to the corresponding back position by driving the lifting lead screw mechanism. The millimeter wave assembly is driven by the movable case to emit millimeter wave signals to the back position, receive echo signals and send the echo signals back to the movable case, and the movable case generates millimeter wave images according to the echo signals and carries out scoliosis analysis; according to the method, the defects that radiation hazards exist, large-scale screening is difficult to carry out, and the screening efficiency and accuracy are low can be overcome.

The invention provides an annular cutting coring module of ventilation filter automatic disassembling equipment, and relates to the technical field of ventilation filter automatic disassembling, the annular cutting coring module comprises a frame body, a hydraulic fixing device and an annular cutting mechanism, an electromagnet is integrated on the hydraulic fixing device, and a conveying mechanism is arranged at the bottom of the hydraulic fixing device; a stopping mechanism is arranged on the side portion of the hydraulic fixing device and used for stopping the front end of a box body of the V-shaped ventilation filter, and a pushing-out mechanism is arranged on the side portion of the girdling mechanism. The V-shaped ventilation filter is conveyed to a coring station through the conveying mechanism, the hydraulic fixing device is started to press and fix a box body of the V-shaped ventilation filter, and the stopping mechanism stops the front end of the box body; and then the filter screen in the V-shaped ventilation filter is cut by the girdling mechanism, the separated filter screen is integrally pushed out from the other side of the box body by the push-out mechanism, the automation level is high, and personnel are prevented from being damaged by radiation during operation.

This invention discloses a plutonium-containing material measuring device, relating to the technical field of radioactive element measuring devices. The device includes a measuring chamber, a lower cover assembly, and an automatic feeding structure. A gamma detector is installed above the measuring chamber, and a neutron detector is installed inside. The automatic feeding structure includes a horizontal transmission mechanism and a synchronous lifting mechanism. The synchronous lifting mechanism is a symmetrical structure driven by a single power source. The lower cover assembly, which carries the material to be measured, is placed on the horizontal transmission mechanism and can be conveyed horizontally to the lifting position. The synchronous lifting mechanism then conveys the lower cover assembly along with the material to be measured vertically into the upper measuring chamber, and the lower cover assembly seals the bottom of the measuring chamber, thus forming a closed measuring space. The device provided by this invention can simultaneously perform neutron and gamma measurements on materials, reducing measurement time, minimizing transport time, reducing radiation hazards to personnel, reducing equipment size, and increasing measurement accuracy.