Xu Jialin, Wang Xiaodong, Li Bingyu, Wang He, Sun Qiang. Method to transfer and store image data of infrared scene projector based on DMD[J]. Infrared and Laser Engineering, 2015, 44(9): 2622-2626.
| Citation:
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Xu Jialin, Wang Xiaodong, Li Bingyu, Wang He, Sun Qiang. Method to transfer and store image data of infrared scene projector based on DMD[J]. Infrared and Laser Engineering, 2015, 44(9): 2622-2626.
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Method to transfer and store image data of infrared scene projector based on DMD
- 1.
Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
- 2.
University of Chinese Academy of Sciences,Beijing 100049,China
- Received Date: 2015-01-11
- Rev Recd Date:
2015-02-12
- Publish Date:
2015-09-25
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Abstract
The reason why it is the resistor array but not the Digital Micro-mirror Device(DMD) that the widely used infrared scene projector was based on real time hardware-in-the-loop simulations(HILS) was pointed out. It was found that both image data transmission bandwidth of the interface and latency of external synchronization signal had impact on real-time performance. Analysis proved that only when the image data transfer bandwidth was 2 times higher than the effective bandwidth, it will meet the critical requirement of real-time simulation system. Dedicated Gigabit Ethernet hardware which meets this requirement was designed, and its software was compliant with UDP/IP protocol. The image transfer delay was only last for one MAC frame. The image data was reordered and stored in a particular way. Experiments proved that with great stability the speed of transferring 8-bit image data with 1 024768 resolutions was above 100 Hz and the latency between external synchronization signal and starting signal of projecting was only 70 s.
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