Acquisition circuit device and method for industrial CT (Computed Tomography) detector

Abstract

The invention discloses an acquisition circuit device and method for an industrial CT (Computed Tomography) detector, and belongs to the application field of industrial CT detectors. The acquisition circuit device comprises an FPGA (Field Programmable Gata Array), a signal selection unit, an amplification inverting circuit, a single-ended rotary difference circuit, an A / D (analog / digital) conversion unit and two level conversion units, wherein the FPGA is connected with the detector through the level conversion units; parallel signals output from the detector are transmitted to the signal selection unit; the FPGA transmits control signals to the signal selection unit, and then the signal selection unit selects one path of signals to output according to the received control signals; and the path of signals are processed by the amplification inverting circuit and the single-ended rotary difference circuit and then are transmitted to the A / D conversion unit, and the signals are converted by the A / D conversion unit and then are transmitted to the FPGA for caching. The acquisition circuit device can be used for performing time-sharing multiplexing of data acquired by the industrial CT detector and cross output of two paths of signals, the utilization efficiency of an acquisition circuit is improved, the complexity of the circuit is reduced, and the cost is saved.

Description

technical field [0001] The invention belongs to the application field of industrial CT detectors, and relates to an acquisition circuit device and method for industrial CT detectors. Background technique [0002] As a detection instrument that uses X-ray scanning, industrial CT detectors are widely used in the industrial field. Industrial CT detectors can be used to observe the internal structure of objects and show defects and inhomogeneities inside the material. Therefore, With the continuous development of CT detection technology, its application has received more and more attention. [0003] Industrial CT detector is essentially a radiation detection technology, but compared with conventional radiation detection technology, it has its unique advantages: First, industrial CT can reconstruct the two-dimensional or even three-dimensional image of the detected object. The shape, size and internal structure of the object are displayed intuitively through the image, which ove...

AI Technical Summary

Problems solved by technology

[0004] When designing the acquisition circuit of the detector, the data output efficiency of the detector can be doubled by using two parallel outputs of the detector, but this requires two acquisition or drive circuits, which will result in the manufacturing of the entire device. Disadvantages such as increased cost, reduced reliability of the overall circuit, and increased control difficulty

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