中文摘要：

光锥阵列耦合数字X射线探测器是获得大面积高分辨率数字X射线成像的重要途径，但目前通常采用粘结固定的方式实现光锥阵列各小端面与对应图像传感器芯片之间的耦合．为克服粘结耦合方式的不足，设计并实现了一种可微调的非粘结2×2光锥阵列耦合数字X射线探测器．该方案能够在调节空间受光锥阵列结构和硬件电路板尺寸限制，特别是竖直方向板间距离仅40mm的情况下，通过独特设计的水平和竖直调节机构在同一个调节层上对四块数据采集板分别进行多维度调节．利用四块数据采集板与数据传输板相互分立的特点，设计了基于ARM＋4FPGA的嵌入式以太网多CMOS芯片传输数据采集系统，所实现的X射线探测器成像面积达100mm×100mm，能够完成可微调的非粘结耦合和多CMOS芯片的图像数据采集．

英文摘要：

Fiber Optic Taper（FOT） array coupled digital X-ray detector is an efficient way for large-area high-resolution X-ray imaging applications, but the coupling method between the small ends of FOT array and the corresponding image sensors is commonly tightly glued coupling at present. To avoid the disadvantages in the conventional glued coupling method, a fine adjustable non-glued 2 × 2 FOT array coupled digital X-ray detector was designed and implemented. The proposed X-ray detector scheme can realize multi-dimensional adjustment of the four data acquisition boards on the same adjusting layer through the novel horizontal and vertical adjusting mechanisms, with the restriction of the limited adjusting space formed by the structure of the FOT array and the sizes of the printed circuit boards, and especially under the condition of the distance between the boards was only 40 mm in the vertical direction. According to the fact that the four data acquisition boards and the data transmission board are separated, an embedded Ethernet data acquisition system for multiple CMOS image sensors based on one ARM chip and four FPGA chips was implemented. Tested results showed that the implemented X-ray detector with the imaging area of as large as 100mm×100mm, can realize fine adjustable non-glued coupling and data acquisition of multiple CMOS image sensors, which could be a new way for multipurpose use in large-area high-resolution digital X-ray imaging applications for scientific researches.