55 results about "Radiation testing" patented technology

The invention discloses an electromagnetic radiation test planning method for an electric vehicle driving system. The method comprises: firstly, establishing a mechanical model, and establishing a circuit model, and then establishing a whole simulation model, and verifying and modifying the simulation model, and simulating to obtain a simulation result, and finally planning measuring position points. After the whole simulation model is established, a few position points are used for practical measurement to obtain a radiation value verification simulation model, and the simulation model is modified. In the simulation process, through controlling differences of radiation values of adjacent position points, simulation precision is ensured. Through a method of interpolation, the radiation value of any position point in a to-be-measured space area is obtained. Through an optimization method, coordinates of the to-be-measured position points are determined. The method can realize rational selection of key measuring position points in electromagnetic radiation measurement of electric vehicles, and improves efficiency and precision of measurement, and comprehensively evaluates performance of an electric vehicle from a view of electromagnetic radiation three-dimensional field.

A method for testing the sensitivity of electronic components and circuits against particle and photon beams using plasma acceleration, in which the flexibility of the multifaceted interaction can produce several types of radiation such as electron, proton, ion, neutron and photon radiation, and combinations of these types of radiation, in a wide range of parameters that are relevant to the use of electronic components in space, such as satellites, at high altitudes or in facilities that work with radioactive substances such as nuclear power plants. Relevant radiation parameter ranges are accessible by this method, which are hardly accessible with conventional accelerator technology. Because of the compactness of the procedure and its versatility, radiation testing can be performed in smaller laboratories at relatively low cost.

The invention relates to the technical field of ionization radiation testing, and provides a double-channel counting system and a measurement method of a dose equivalent in a high dose condition, so as to solve the problem of the measurement of the dose equivalent in the high dose condition. The measurement method mainly comprises the following steps: initializing the double-channel counting system; respectively performing measurement on an intermediate energy radiation field and a high energy radiation field; performing linear fitting on measured values obtained in various conditions, so as to obtain an interpolation equation. Through the adoption of the technical scheme, the correction of both the counting lineation and energy response of a semiconductor detector is realized within a certain radiation field average effective energy range.

The invention relates to a four-element parallel tellurium-zinc-cadmium nuclear radiation detector device, which comprises four tellurium-zinc-cadmium detectors. Each tellurium-zinc-cadmium detector is respectively connected with an adding circuit sequentially through a pre-amplifier, a differential amplifier and a main amplifier, and the adding circuit is finally connected with a multi-channel energy spectrometer and a digital oscilloscope. Signals detected by the four tellurium-zinc-cadmium detectors are processed by the multi-channel energy spectrometers and the digital oscilloscopes after being amplified. Compared with the traditional unit detector, the detector device has a large detection area and high detection efficiency, needs short detection time, is suitable for portable nuclear radiation detection spectrometers, and can be widely applied in nuclear waste monitoring, environmental monitoring, and radiation testing of goods at airports, ports and railways.

The invention provides a radiation testing system for simulation television station transmitting power under an open ground environment, and belongs to the field of radio transmission system performance index testing. The testing system comprises a directional receiving antenna, power measuring equipment, a ranging and locating device and a control device; the directional receiving antenna is used for receiving electromagnetic waves transmitted by a simulation television station, converting the electromagnetic waves into electric signals and transmitting the electric signals to the power measuring equipment; the power measuring equipment calculates the peak power Pr incident on the receiving antenna according to the electric signals; the ranging and locating device is used for measuring the height h1 of a transmitting antenna, the height h2 of the receiving antenna and the distance L between the receiving antenna and the transmitting antenna; the control module comprises a equivalent isotropic radiated power estimating module, and the equivalent isotropic radiated power estimating module is used for calculating the equivalent isotropic radiated power (EIRP) of a tested station. The radiation testing system for the simulation television station transmitting power under the open ground environment can achieve more comprehensive and accurate monitoring on a station radio transmission system including transmitters and antenna feed systems, and therefore the working flexibility and autonomy are greatly improved.

A mobile phone positioning apparatus provides a rotational movement and switching functionality among three planes (H, E₁ and E₂) as requested by a radiation test. The positioning apparatus includes a base, a support shaft, a platform and a testing plane switch apparatus. The testing plane switch apparatus is mounted on the platform. An inverse U frame is fixed on the platform. A testing frame, pivotally connected to the inverse U frame, is rotated by two pneumatic cylinders so as to switch between the H plane and either the E₁ or E₂ plane by 90 degrees. A testing plate, pivotally connected to the testing frame, is rotated by another pneumatic cylinder so as to switch between the E₁ and E₂ planes by 90 degrees.

The invention relates to an in-situ mechanical property testing device and a testing method, belongs to the field of synchrotron radiation in-situ testing, and solves a problem that an irregular sample is difficult to realize tensile pressurization state simulation in the prior art. The in-situ mechanical property testing device comprises a driving assembly, a supporting frame and a sample clamping piece, wherein the sample clamping piece comprises a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are respectively used for fixing theupper end and the lower end of a sample; the driving assembly can drive the first clamping piece to move relative to the second clamping piece to stretch or pressurize a sample; diffraction grooves are formed in supporting legs of the supporting frame, so diffraction and imaging X-ray emergence angles not smaller than 160 degrees are achieved. According to the method, stretching or pressurizing of a standard sample and a non-characterization shape sample can be realized, and the structure and the mechanical property of the sample are detected by combining a synchrotron radiation testing system.

The invention belongs to the technical field of heat radiation testing, and particularly discloses a thermal radiation testing device and method for testing the heat preservation and insulation capacity of a radiation type heat preservation and insulation thin-layer coating. The thermal radiation testing device comprises a heat preservation box, a temperature detection device and a heat source. Aheat transfer cylinder is arranged in the heat preservation box, the temperature detection device is arranged in the heat transfer cylinder, a vacuum cavity can be formed between the temperature detection device and the heat transfer cylinder, and the heat source can transmit heat to the temperature detection device through the vacuum cavity. The vacuum cavity can block conduction heat transfer and convection heat transfer, so that heat is transferred between the temperature detection device and the heat source only through radiation heat transfer. The outer surface of the temperature detection device can be coated with a radiation type heat preservation and insulation thin-layer coating, and the temperature value detected by the temperature detection device can reflect the heat preservation and insulation capacity of the radiation type heat preservation and insulation thin-layer coating.

The invention discloses an internal combustion engine exhaust silencer shell noise radiation testing system. The testing system comprises a sound absorption box, a loudspeaker, a sound track pipe, a data acquisition unit, an interface box, a microphone, a front-end pipe coupling, a to-be-tested silencer, a microphone, a tail-end pipe coupling, a silencing tail pipe, a sound absorption partition plate, a data processor and a software system. The data processor and the software system transmit a noise signal to the data acquisition unit and the interface box, the noise signal is amplified by thedata acquisition unit, the interface box and the loudspeaker, the generated noise enters the sound track pipe and then enters a to-be-tested silencer sample piece, one part of the microphone can be used for testing silencer shell noise radiation, and the other part of the microphone can be used for testing radiation noise at the tail of the silencer. The system is used for testing and researchingradiation noise of the internal combustion engine exhaust silencer shell and tail pipe structures.

A radiation inspection device that counts the number of pixels within a preset gray scale range of gray scales distributed from XL to XH based on gray scales represented by pixel gray scale information output from a radiation detector, and according to The result of this total checks whether or not there is a shortage of items. Therefore, the device can correctly determine whether the item is missing or not by simple data processing instead of performing pattern recognition on a radiographic image.

An automatic heat radiation testing method for a memory comprises the following steps of adjusting a testing environment; loading a testing pressure; detecting whether the pressure is maximized, if not, performing pressurizing continuously, and otherwise, performing a next step; and unloading the pressure. The invention further provides an automatic heat radiation testing system for the memory. Inthe heat radiation testing process of the memory, inaccurate testing result caused by change of factors such as man-caused air current and ambient temperature is greatly reduced, and operation reliability of a server is improved. The automatic heat radiating testing method and the system thereof further have advantages of reducing requirement for manpower, improving equipment utilization rate, greatly improving working efficiency and saving energy consumption.

The invention provides a transmitting power radiation testing system of a digital TV station in an open ground environment, and belongs to the field of performance index test of a radio transmitting system. The testing system comprises a directional receiving antenna, a power measuring device, a ranging and positioning device and a control device, wherein the directional receiving antenna is used for receiving electromagnetic waves transmitted by the digital TV station and converting the electromagnetic waves into an electric signal transmitted to the power measuring device; the power measuring device is used for calculating channel power Pr entering the receiving antenna according to the electric signal; the ranging and positioning device is used for measuring the height h1 of a transmitting antenna, the height h2 of the receiving antenna, and the distance L between the receiving antenna and the transmitting antenna; the control device comprises an equivalent isotropic radiated power (EIRP) estimating module which is used for calculating the EIRP of the tested station. With the adoption of the system, the station radio transmitting system including a transmitter and an antenna feeder system can be comprehensively and accurately monitored, and the working flexibility and independence can be greatly improved.

The invention provides a radiation testing method for simulation television station transmitting power under an open ground environment, and belongs to the field of radio transmission system performance index testing. The testing method comprises the steps that a center frequency f of power measurement equipment is set; the polarization direction and the pitching direction of a receiving antenna are adjusted, and after a signal maximum value is found, the receiving antenna is fixed; the height h1 of a transmitting antenna, the height h2 of the receiving antenna and the distance L between the receiving antenna and the transmitting antenna are measured and recorded; the peak power Pr received by the receiving antenna is measured; the equivalent isotropic radiated power (EIRP) of a tested station is calculated according to the following formula: EIRP=Pr-Gr+Lr+Lprop+Pb, wherein the Gr is the gain of the receiving antenna, the Lr is the loss of a receiving feeder line and a connector, the Lprop is space transmission loss, and the Pb is compensation power. The radiation testing method for the simulation television station transmitting power under the open ground environment can achieve more comprehensive and accurate monitoring on a station radio transmission system including transmitters and antenna feed systems, and therefore the working flexibility and autonomy are greatly improved.

The invention provides an experimental device for the LED chip heat radiation testing. The device comprises an adjustable support, a power supply module, heat insulation material, an LED chip to be tested, a heat radiator and a temperature measuring instrument. The adjustable support comprises a fixing base, a supporting rod and a height adjusting rod; the heat insulation material is installed on the fixing base of the adjustable support; the LED chip to be tested is installed above the heat insulation material; the heat radiator is installed above the LED chip to be tested. The power supply supplies the operating voltage for the LED chip, fan and other active heat radiation devices, and the temperature measuring instrument measures the temperature of the LED chip to be tested. The experimental device is simple in structure and convenient to install and operate, and the active and natural heat radiation experimental testing can be performed on the LED chip.

The invention provides an electromagnetic radiation test method, system and device, and a storage medium. The method comprises the following steps: connecting a network port of a control computer in a control room with a network port of a substrate management controller of a tested device in a test shielding darkroom through a network cable; adjusting the corresponding frequency exceeding the limit value to the screen of the receiver, and judging whether the corresponding clock opens the spectrum spreading function or not according to the waveform on the screen; in response to the fact that the spectrum spreading function of the corresponding clock is opened, selecting an optimal spectrum spreading mode; and selecting an optimal modulation depth and an optimal modulation speed in the optimal spread spectrum mode. According to the invention, when electromagnetic radiation testing is carried out, setting of related parameters of remote control spread spectrum can be directly carried out on the server in the shielding darkroom in the control room, and testing results under different setting conditions of the spread spectrum parameters can be directly checked in real time in the control room, so that a large amount of time and economic cost are saved.

The invention relates to a film radiation dosage testing clamp, and belongs to the field of radiation test. The clamp is a cuboid; four sides of the clamp are rectangular; the top and bottom of the clamp are square; a counter bore G and a counter bore H coaxial to each other, a film clamping slit and a clamping groove are formed in the clamp; and a film radiation dosage meter is placed into the film clamping slit by the clamping groove during test. By utilizing the film radiation dosage testing clamp, faults caused by movement of relative oppositions of the film during different tests of the clamp are overcome, the clamping force of the film radiation dosage meter in the clamp is eliminated, and the film radiation dosage meter is in a natural extension state, so that the improvement on the testing accuracy is facilitated.

The invention discloses a transmission mode electrochemical in-situ optical testing device and belongs to the field of material testing equipment and research. According to the device, in-situ opticaltesting can be performed an electrode material under a transmission mode in an electrochemical charging and discharging process, wherein optical testing involves testing of visible light of differentwavebands, laser testing, X-ray testing, synchronous radiation testing and neutron diffraction testing. The device disclosed by the invention is of a closed structure, is suitable for the measurementof a material sensitive to air and moisture, such as the electrode material of a battery; a positive pole fixing sheet and a negative pole fixing sheet are designed to fix a material to be tested, and therefore, the repeatability of testing is improved; electrode interfaces are adopted; the material can be electrochemically regulated in a testing process; an electrode can be in large-area contactwith the electrode material, so that the resistance of the device is reduced; two ends of the device are provided with observation windows, a passage is arranged at the middle of the device so as toallow light to pass through. The device has the advantages of convenience in assembling and disassembling and the like. The device disclosed by the invention can also be used in a reflection mode, andcan test electrode materials at two sides separately.

The invention relates to a radiation testing device, a radiation testing method, a sample testing system and a sample testing method. The radiation testing device comprises: a shielding box used for storing a to-be-detected sample; a signal generating device used for emitting a radiation signal into the shielding box; and a field intensity detection device located in the shielding box and used for detecting the field intensity of the radiation signal reaching the to-be-detected sample.

A radiation inspection system and a method using the same. The system includes a steering radiation electronic tube for generating radiation, and an image intensifier for converting a plurality of projection images formed by projecting the radiation from the steering radiation electronic tube onto an object to be inspected into visual images. The system also includes a visual image part on which the visual images are projected, an electronic shutter having a visual image transmission part for transmitting the visual images from the visual image part of the image intensifier in sequence, and a camera for photographing the visual images from the visual image transmission part of the electronic shutter in sequence. With this configuration, the electronic shutter transmits visual images sequentially.

The invention relates to the field of computers, in particular to a server radiation interference resistance testing method, device and equipment and a medium. The method comprises the following steps: carrying out a radiation emission test on a certain server in a plurality of servers in a test environment, and collecting a radiation signal generated by the certain server; performing waveform analysis on the radiation signal to determine a signal type; determining a test frequency based on the signal type and the radiation signal; and simulating a signal of which the frequency is equal to the test frequency in the test environment, and detecting whether the remaining servers operate normally or not. The scheme of the invention enriches the selection of the test frequency during the radiation resistance test, realizes more efficient and more accurate selection of the test frequency of the radiation immunity of the server, ensures that the server can meet the requirement of the radiation immunity, and ensures that the server can operate normally without being influenced by electromagnetic radiation in a complex electromagnetic environment such as a machine room.

The embodiment of the invention provides a chip wireless parameter calibration method and device, and electronic equipment, which belongs to the technical field of wireless transmission. The method comprises the steps of determining a to-be-calibrated target chip; acquiring a radiation loss value corresponding to the target chip; acquiring radiation parameters of the target chip through a radiation test; and taking a value obtained by adding the radiation parameter and the radiation loss value as a wireless parameter of the target chip. Through the scheme of the invention, the calibration process of the wireless parameters of the chip is simplified; the loss caused by environmental factors in the radiation test process is compensated, and the accuracy of wireless parameter calibration is improved; emission parameter calibration deviation caused by environmental factors during radiation calibration in production calibration of the wireless signal emission chip is weakened; and the method is convenient for batch processing and production, so that wireless emission calibration of factory chips is more accurate.