The Design Of The Infrared Imaging System

Medical infrared imaging system can passively accept emits infrared radiation of human body,it is a new type of green check way.Compared with the conventional diagnostic methods in the past,it have no radiation,no damage to the human body,the advantages of non-contact,playing an increasingly important role in medical treatment. But at present domestic,most of the infrared imager imported from abroad,not only expensive,but also very complicated to operate,so developing a simple operation,good performance of infrared imaging is more and more get the attention of people.This system is put forward based on the above question.In this paper, through the research analysis and the research status of domestic and foreign medical infrared imager, designed a simple, easy to operate, good performance of the medical infrared imaging system. This system mainly includes the hardware part and software part. The hardware part includes two parts of the image acquisition, image acquisition, transmission, Software part includes image acquisition module, image transmission module software design and PC software design three parts. Infrared image acquisition part adopts 11 mm lens, uncooled focal plane movement detector, with fast response, high resolution, like yuan spacing is small, high sensitivity, etc. Image acquisition transmission part developed based on DSP + FPGA hardware design scheme of collection and transmission. Choose XC6SLX100 choose TMS320C6416 DSP, FPGA, a combination between the two complementary advantages, will give full play to the TMS320C6416 bring strong performance of PCI bus and XC6SLX100 flexibility. For analog signal acquisition, in order to prevent interference sources of image signal interference and ensure the logical relationship of various signal analog signals before analog-to-digital conversion in the video sync separator, on the one hand, improve the quality of the video, on the other hand convenient video processing. Collection and transmission and data exchange between upper machine adopt the PCI interface, using the characteristics of the transmission speed faster meet the PCI data image transmission task.Software part, the image acquisition, image transmission and PC software design, thisthree parts to achieve the real time image display, storage and playback, and other functions.Based on the above design,this system is able to achieve 384×288 pixel image real-time display,storage,playback and avoid focusing and quick and easy to capture thermal images,and other functions,can satisfy the design requirements,such as miniaturization,low power consumption,convenient on in medicine has higher application value.