51 results about "Readout electronics" patented technology

The invention relates to a photon counting imaging detector, in particular to a photon counting imaging detector with multiband composite detection capability, and solves the technical problem that an existing position-sensitive anode detector cannot detect multiple bands at the same time. The photon counting imaging detector with the multiband composite detection capability comprises a vacuum packaging tube body array, and a position-sensitive anode assembly, a detector frame and a detector end cover which are sequentially connected from bottom to top, the receiving ends of the vacuum packaging tube bodies are upwards arranged in the mounting block, and the N * M receiving ends of the vacuum packaging tube bodies are respectively provided with the same or different photoelectric cathodes for receiving target optical signals of different wavebands and converting the target optical signals into photoelectrons; the output ends of the N * M vacuum packaging tube bodies are respectively provided with a high-resistance collecting layer for receiving the photoelectrons and converting the photoelectrons into electronic cloud cluster signals for outputting; and the position-sensitive anode assembly is used for sensing an electron cloud cluster signal and transmitting the electron cloud cluster signal to an external readout electronics system for processing.

The invention provides a front-end readout electronics circuit for a silicon PIN detector. The front-end readout electronics circuit solves the technical problems that an existing front-end readout circuit cannot meet the requirements for quick response, dynamic adjustment of the dynamic range and small nonlinearity error. The charge sensitive amplifier comprises a charge sensitive amplifier and a forming module connected with the charge sensitive amplifier, and the charge sensitive amplifier receives an analog charge signal of the silicon PIN detector and converts the analog charge signal into an analog voltage signal according to a certain gain; the gain is controlled by a feedback capacitor which is dynamically controlled by a register; the reset module is connected in parallel to two ends of the charge sensitive amplifier and is used for releasing the accumulated charge quantity of the charge sensitive amplifier; the forming module performs filtering forming on the analog voltage signal to obtain a Gaussian-like waveform; the forming module comprises a fast forming unit and a slow forming unit, and the fast forming unit is sequentially connected with a comparator and a digital-to-analog converter; the slow forming unit is sequentially connected with the sampling hold circuit, the digital control center module and the analog-to-digital converter. The method can be widely applied to the technical field of particle detection.

An in / near-sensor artificial intelligence (AI) architecture that facilitates knowledge inference at a source of data, wherein the architecture comprises a three-dimensional (3D) stacked complementary metal-oxide-semiconductor (CMOS) image sensor that comprises a multi-layer computational structure that enables AI-based knowledge inference before readout electronics. The multi-layer computational structure comprises a hierarchical attention-oriented region-based processing (HARP) module that is configured between a processing unit and readout circuitry that is coupled to an image sensor.

The invention relates to the technical field of detector vacuum low-temperature packaging and detector irradiation performance degradation characterization, and discloses a vacuum packaging device for detector low-temperature irradiation and test and a test method. The vacuum dewar is arranged in the shielding shell; the detector assembly is mounted in the vacuum Dewar and comprises a detector body and a refrigerator cold head; the refrigerating machine cold head is in heat transfer connection with the detector assembly; the detector driving readout electronics assembly is fixedly mounted at the rear end in the shielding shell and is in signal connection with the detector assembly; the temperature control electronics assembly is in signal connection with the refrigerating machine cold head; a vacuum valve; the shielding shell at least cannot block the detection visual field of the detector body, and gaps are reserved for a pipeline of a refrigerating machine cold head, a pipeline of a vacuum valve, a power supply control line of a detector driving read-out electronic assembly and a power supply control line of a temperature control electronic assembly to pass through. The device and the method are suitable for scenes of irradiation test and subsequent performance test of the detector under vacuum and low temperature.

Collected light may be split into fields using grazing incidence mirrors to avoid illuminating gaps between the active areas for readout electronics. The grazing incidence mirrors may reduce lost field space in the integrating direction by splitting the imaging field in that direction to allow the readout electronics to be outside of the field. The fields may be split so there is space for readout circuits but no associated light on the readout circuits. The size of the illumination may then be decreased and / or the number and / or size of sensors increased to improve the photon collection efficiency. The better photon collection efficiency may reduce shot noise and / or improves tool throughput.

A method for operating a lidar device by means of a control device is disclosed, wherein at least one radiation pulse is emitted by a radiation source into a scanning area, and the radiation reflected and / or backscattered from the scanning area is received by a detector having a plurality of SPAD cells and converted into electrical count pulses, wherein at least one radiation pulse having an intensity profile with an extended fall is generated and the detector is read out by means of DC-coupled readout electronics. Furthermore, a control device and a lidar device are disclosed.

The application discloses a target channel selection output method and system for frequency division multiplexing superconducting detectors, and belongs to the technical field of digital signal processing and superconducting detector readout electronics. The method aims at the problems of high resolution channelization resource occupation, high full spectrum output bandwidth pressure, and obvious spectrum leakage and crosstalk under high multiplexing ratio. On the basis of high resolution channelization processing, the mapping relationship between target frequency points and channels and the target channel selection output mechanism are introduced. After the wideband digital input signal is processed by the polyphase filter bank channelization, only the complex data corresponding to the target frequency points containing effective signals are selected and output, and are further separated into I / Q data stream output. The scheme combines high resolution channelization processing with the mapping driven selection output mechanism, reduces resource occupation and data transmission bandwidth while ensuring frequency resolution, and improves real-time performance and signal fidelity in the readout scene of high multiplexing ratio detectors.

The present invention relates to a coded multi-channel multiplexing readout method and system for a cross-strip anode detector, belonging to the field of photon imaging detection technology, and solving the technical problems of poor universality and low efficiency of coded readout. The method comprises formulating coding rules for electronic channels according to channel multiplexing rules; connecting the cross-strip anode detector channels with corresponding electronic channels using the coding rules for electronic channels; determining the number of electronic channels for data acquisition and processing, reading out data, and determining the position where the electron cloud falls on the detector. The system comprises a cross-strip anode detector and a readout electronics system. The cross-strip anode detector comprises several detector channels, and the readout electronics system comprises several electronic channels; one electronic channel is connected to four detector channels, and one detector channel is connected to one electronic channel. The invention is used for coded multi-channel multiplexing readout of a cross-strip anode detector.

The application discloses a thin film thickness measuring device and method based on a pixel array type silicon detector, and relates to the technical field of thin film thickness detection.The thin film thickness measuring device based on the pixel array type silicon detector comprises an X-ray generator, a thin film fixing module, a pixel array type silicon detector, readout electronics and an upper computer.The thin film fixing module is used for fixing a to-be-detected thin film.The X-ray generator is used for generating X-rays.The X-rays pass through the to-be-detected thin film and irradiate on the pixel array type silicon detector.The pixel array type silicon detector is used for converting the X-rays into electric signals.The readout electronics is used for conditioning the electric signals to obtain conditioned signals.The upper computer is used for determining a corresponding X-ray energy spectrum according to the conditioned signals, and determining the thickness distribution of each thin film in the to-be-detected thin film according to the X-ray energy spectrum.The application can realize high-precision measurement of the thin film thickness in a simple and fast manner.

The invention discloses a novel metal micro-strip ionization chamber, which belongs to the technical field of beam position detection and comprises two pairs of anode plates and two pairs of cathode plates. The anode plate is formed by integrating a plurality of metal micro-strip electrodes on exposed top metal by adopting a CMOS (Complementary Metal Oxide Semiconductor) process, and is integrated on the same chip with readout electronics; according to the invention, the charge collecting electrode and the reading circuit are integrated in the same chip by adopting the CMOS technology, that is, the metal micro-strip and the reading circuit are integrated in the same chip, so that compared with a traditional ionization chamber, the ionization chamber has higher position resolution, does not need bonding processing, and reduces the system integration complexity.

The invention provides a photomultiplier signal output charge distribution circuit, and belongs to the field of photomultiplier signal output. According to the invention, the technology that a plurality of capacitors are connected in parallel to carry out charge distribution is utilized, the anode output signal of the photomultiplier is distributed on two paths of output according to a required dynamic range, outputs in different dynamic ranges are naturally formed, and a subsequent readout electronics circuit can be matched. The circuit is simple in structure, high in reliability, good in voltage-resistant isolation performance, free of a peripheral control circuit and a feedback system, and suitable for occasions such as a space detector with high requirements for the size, weight and reliability of the circuit; according to the invention, the output linearity of the photomultiplier is maintained, the working voltage of each dynode of the photomultiplier is not influenced while the charges are distributed, and the recovery time of the photomultiplier is not influenced; output signals are of two-path same-direction models, a subsequent reading electronics circuit does not need to be additionally processed, and the photomultiplier is suitable for occasions needing two-path output of a single photomultiplier.

The invention relates to the technical field of neutron detection, in particular to a neutron detector technology based on combination of domestic 3He gas and a self-developed ceramic gas electron multiplier (GEM). Comprising a high-pressure 3He mixed gas working chamber with the inflation pressure not lower than 6 atm; the high-temperature-resistant ceramic GEM membrane is prepared by adopting a mechanical drilling technology, the hole precision uniformity is less than or equal to 10 microns, and the temperature resistance is more than or equal to 150 DEG C; the two-dimensional reading plate adopts a flexible polyimide base material, the strip width is 0.7-0.8 mm, and the number of channels is greater than or equal to 512; the cascaded GEM amplification structure comprises 2-3 layers of ceramic GEM films, and the gain of a single layer is 50-100 times; a special ASIC-FPGA mixed readout electronics system is characterized in that a high-pressure 3He gas working medium and a high-temperature-resistant ceramic GEM structure are creatively fused, and a large-area GEM preparation process, a high-pressure 3He gas sealing and purifying technology and a special high-speed readout electronics system are combined; and breakthrough improvement of core performance indexes such as detection efficiency, counting rate, spatial resolution and gamma suppression capability of the neutron detector is realized.

Neutron-induced radiation detectors (NiRDs) and radiation dosimetry systems containing the same are described. Examples of NiRDs can include numerous components based on location, function, dimension, and / or constituent materials. A NiRD can be configured to directly measure an absorbed dose (or rate) of particular ionizing reaction products induced by neutrons. The NiRD can utilize various detection schemes for measuring the deposited energy of the reaction products, such as gaseous ionization, semiconducting, scintillating, or homogenous versions of these detection schemes. The NiRD can measure the deposited energy of the reaction products in forward emission, backward emission, or both. Examples of radiation dosimetry systems can include one or more NiRDs, a gamma ray detector, and readout electronics coupled to each of the radiation detectors. Example implementations of the radiation dosimetry systems are described for determining an equivalent dose (or rate) of a neutron beam generated for boron neutron capture therapy (BNCT).

An electronic readout network topology for positron emission tomography is able to provide Time of Flight for photodetectors arranged in matrix arrays made up of a plurality of silicon photomultipliers. Each photodetector has anode and cathode terminals. The readout network topology ensures suitable polarisation of the set of photodetectors and provides a reduction diagram by creating a single connection to extract a unique time reference signal that is accurate and synched up in phase to a detection event at any position of the photodetector matrix instead of connecting to each individual photodetector. A fast amplifier with low input impedance is electrically coupled to this time reference signal, creating a path of low impedance for the rapid transition signals, reducing the total parasitic capacitance of the parallel arrangement of detectors, and improving the time response of the detector block. Moreover, the readout electronics creates a smaller number of positioning signals.

The utility model discloses a double-spacing integrated gamma detector and a logging instrument, and relates to the field of uranium exploration logging. The detector comprises a shell, a double-probe assembly and a readout electronics module, wherein the double-probe assembly is composed of a near-spacing probe and a far-spacing probe; the near source distance probe and the far source distance probe are fixedly arranged in the shell at an interval and are both arranged to be radiation-resistant scintillation crystals connected with photoelectric converters; a central cavity is defined between the near source spacing probe and the far source spacing probe as well as the inner wall surface of the shell, and the readout electronics module is integrally arranged in the central cavity; the inner wall surface of the shell is coated with a shielding layer; according to the detector, the spatial multiplexing architecture is combined with mechanical rigid fixation, so that the structure is compact, the source distance offset is eliminated, and the measurement reliability is improved.

The application discloses a kind of metal halogen perovskite-based neutron multiplicity measuring device and method, the device includes: shell, the shell is used to install and protect other components of the measuring device;Radiation detection module is arranged in the shell, and the radiation detection module is mainly composed of perovskite material and photomultiplier tube etc.;Shielding unit is arranged in the shell and located at the side and bottom of the perovskite scintillator, for reducing gamma-ray background;And, readout electronics module is arranged in the shell, and the readout electronics module is used to read the electrical signal generated by the photomultiplier tube and convert it into digital signal output.The application can realize the effective discrimination of neutron and gamma, so as to accurately deduct the influence of gamma-ray background, improve the sensitivity of fast neutron measurement.

A flexible digital radiographic detector assembly includes a flexible sleeve enclosing a photosensor array supported by a flexible substrate. Integrated circuit readout electronics are coupled to the photosensor array. The digital radiographic detector assembly communicates with a local computer system or with a cloud server to transmit image data captured in the photosensor array, to display the image data on a screen, and to analyze defects that may be present in the image.

The present invention relates to a readout electronics circuit system for a heavy ion beam telescope and a method of using the same. The system includes a front-end readout control module, a data aggregation module, a trigger and clock module, and a computer. The front-end readout control module is used to receive the control signal from the data aggregation module and the clock and trigger signals provided by the trigger and clock module, and amplify and digitize the voltage pulse signals output by the corresponding silicon pixel chips in the heavy ion beam telescope to obtain processed data frames. The data aggregation module is used to aggregate and process the data frames processed by several front-end readout control modules to determine the track of the particle. The trigger and clock module is used to generate multiple trigger signals and multiple clock signals. The computer is used to control the front-end readout control module, the data aggregation module, and the trigger and clock module. The present invention can be widely applied to the fields of high-energy physics experiments and nuclear detection technologies.

The present application relates to a kind of readout electronics circuit system of crossing radiation detector, cooperative working method, equipment and medium, comprising: four first connectors, for receiving the analog charge signal and air temperature air pressure digital signal output by crossing radiation detector;Four ESD protection circuits are used to provide ESD protection;Four SAMPA chips are used to obtain digitized scientific data;An environmental monitoring module is used to monitor the environmental parameter value of readout electronics circuit system;A FPGA module is used to process the air temperature air pressure digital signal of crossing radiation detector, the environmental parameter value of readout electronics circuit system, the state parameter of FPGA module, digitized scientific data;A first hardware interface is used to receive serial data instruction and trigger signal;A second hardware interface is used to send the processed scientific data and clock signal to back-end summary electronics, the present application can be widely applied in high-energy particle detection technology field.

This invention belongs to the field of gamma imaging technology, specifically relating to a gamma ray localization method based on a planar scintillator. The method includes the following steps: performing multi-point calibration tests on the direction and orientation of the planar scintillator using a collimated gamma ray source; calculating a normalized ratio variable; using the least squares method to fit the normalized ratio variable to a known incident position to obtain the key parameters in the two-dimensional coordinate calculation formula; training a neural network model based on a dataset; and for the gamma ray deposition location to be measured, performing rapid position calculation using the two-dimensional coordinate calculation formula, or performing high-precision position prediction using the neural network model. This invention significantly reduces the number of photoelectric readout devices and readout electronics channels while maintaining good position and energy resolution performance, thereby effectively reducing system costs. It has promising application prospects in large-area gamma imaging, radiation monitoring, and related engineering applications.

An X-ray detector for a computed tomography (CT) imaging system is provided. The X-ray detector includes a plurality of detector modules. Each detector module of the plurality of detector modules includes a scintillator layer configured to convert X-ray photons into lower energy light photons. Each detector module of the plurality of detector modules also includes a light imager layer configured to convert the light photons into electrons, wherein the light imager layer includes a light imager panel comprising an array of photodiodes. Each detector module of the plurality of detector modules further includes a readout device that converts the electrons into digitized pixel values, wherein each photodiode of the array of photodiodes is coupled to a respective dedicated readout channel of the readout device via a respective dedicated data line, and the readout device is configured to continuously directly readout the electrons from the array of photodiodes.

A computed tomography (CT) imaging system includes a detector array configured to detect X-ray projections. The detector array includes a semiconductor sensor array having a plurality of sensors. Each sensor includes a first surface, a second surface, a substrate, and a readout electronics unit. The first surface has a high-voltage bias and includes a first dopant and can receive the X-ray projections. The second surface is opposite the first surface and includes a plurality of sensing regions of a second dopant. The second surface has a low-voltage bias and is configured to collect charges from the X-ray projections. The substrate includes a semiconductor material with a resistivity of at least five kiloohm centimeters and is positioned between the first and second surfaces. The readout electronics unit is positioned between the sensing regions. A surface area of the readout electronics unit is less than one percent of the second surface.

The application discloses a kind of extraction and error correction methods for evaluating the sampling rate of pulse waveform measurement system, to sample rate f0 The output waveform of detector is sampled, and high sampling rate original waveform is obtained;According to the target sampling rate set, select multiple extraction ratios, based on different starting points, perform multiple sets of extraction operations with the same ratio on the original waveform, and expand to obtain multiple sets of waveforms with uniformly distributed sampling phases;According to the application scenario, select and calculate the evaluation parameter σ;According to the amplitude distribution estimation error caused by the correlation between waveforms during the extraction process, introduce the correction factor p To modify the evaluation parameter;The contribution ratio of the error caused by the correlation between waveforms to the evaluation parameter is further modified to the evaluation parameter σ, to realize the accurate evaluation of waveform measurement system.The method can greatly reduce the research and development cost and cycle of multi-channel readout electronics, and the uniform sampling phase can effectively avoid random error.

A flexible digital radiography detector assembly includes a flexible sleeve enclosing an array of photosensors supported by a flexible substrate. Integrated circuit readout electronics are coupled to the array of photosensors and to a circuit board having conductive contacts. The contacts engage a handheld readout electronics cartridge to initiate reading of image data captured in the array of photosensors and to display the image data on a screen in the readout electronics cartridge.

Methods and systems are provided for repairing a defective segment of a sensor array of a photon counting detector of a photon counting computed tomography (PCCT) imaging system. In one example, a method for a PCCT imaging system comprises dividing a segment of the sensor array into a plurality of sub-segments, wherein each sub-segment of the plurality of sub-segments is electrically coupled to a readout electronics, the readout electronics configured to calculate a photon count for the segment; generating a total photon count for the divided segment based on combined electrical signals produced at each sub-segment of the divided segment; and reconstructing an image based on the total photon count at the divided segment. A defect detected in the divided segment may be traced to a defective sub-segment, which may be isolated from the readout electronics, thereby increasing a quality of the reconstructed image.

This document discloses system and method embodiments for measuring shear forces at fixation points of textile-based implants. A system for supporting tissue includes two or more sensor assemblies (110), each sensor assembly (110) including a base portion (116) configured to be anchored in tissue (120), a beam (114) extending away from the base portion (116) toward an attachment surface (112), and a sensor (130) attached to the beam (114) and configured to measure a force applied to the beam (114). The system further includes a mesh (102) configured to be disposed adjacent to the tissue (120), the mesh (102) configured to attach to the attachment surface (112) of each of the sensor assemblies (110) such that mesh tension applies a shear force to the attachment surface (112) of a sensor assembly (110). The system further includes readout electronics configured to receive force information from each sensor assembly (110).

The present application relates to the field of particle physics experiment data acquisition and processing, and specifically discloses an online AI triggering and data compression method and device for particle detector readout electronics, wherein the method realizes real-time feature extraction on the output pulse signal of the detector, uses a pre-trained fully connected neural network model to realize high-precision triggering decision, adopts a compression strategy combining adaptive quantization and entropy coding to compress effective event data, and simultaneously introduces a quality feedback mechanism based on peak signal-to-noise ratio to form a closed-loop control. The present application realizes intelligent collaborative processing of triggering decision and data compression, significantly improves the event selection efficiency and data compression quality under the premise of ensuring data physical integrity, and provides an efficient real-time data processing solution for high-count-rate particle physics experiments.

A hyperspectral infrared imaging system includes optical components, multi-color focal plane array or arrays, readout electronics, control electronics, and a computing system. The system measures a limited number of spatial and spectral points during image capture and the full dataset is computationally generated.

The application relates to the technical field of readout electronics, and discloses a phased array system readout electronics platform and method, wherein the platform comprises: a radio frequency acquisition module configured to convert spatial electromagnetic waves into radio frequency acquisition signals; a digital receiving module comprising a time-frequency management unit and at least one signal processing unit, the time-frequency management unit is configured to send a clock output signal and a timing control pulse signal to each signal processing unit respectively, so that each signal processing unit synchronously analyzes the timing control pulse signal according to the clock output signal and performs coarse channel processing on the radio frequency acquisition signals to obtain multiple channel signals; and a backend readout module configured to generate astronomical observation data according to the channel signals. The application precisely controls the clock output signal and the timing control pulse signal to ensure the consistency and synchronization of the processing processes of the signal processing units, and simultaneously reduces the data processing pressure by means of coarse channelization processing, thereby effectively reducing the system power consumption.

This invention discloses a method for generating simulated signals for a position-sensitive 3He tube neutron detector. The method obtains the random distribution function of the total pulse amplitude of a single particle impact, the random distribution function of the time interval between neutron impacts on the detector, and the random position distribution function of the neutron impact on the 3He tube. Based on these functions, the invention constructs digital waveform pulses of the signals at both ends of the 3He tube. These digital waveform pulses are then converted into two real pulse signals via two DACs. Furthermore, these two pulse signal sources are simulated signal sources capable of containing energy, time, and position distribution information for neutron detection by a position-sensitive 3He tube neutron detector. This invention will greatly contribute to the development of corresponding readout electronics, particularly in the fields of position measurement algorithm optimization and position measurement accuracy calibration.