高稳定度紫外LED定标的可行性分析与测试

为了满足紫外遥感器星上定标的高稳定度、小型化、低功耗的应用需求以及紫外发光二极管(Light Emitting Diode, LED)定标在工作电流的典型值为200 mA时的稳定度不大于1‰、稳定时间小于3 min的技术指标要求，提出了用基于FPGA的数字控制电路驱动紫外LED发光并用增量式比例-积分-微分(Proportional-Integral-Derivative, PID)进行闭环控制的方法。对紫外LED的电流稳定度进行了测试，获得了电流大小随时间变化的误差关系。测试结果表明，该系统可以使紫外LED上的电流在3 min内实现稳定，其稳定度达到0.2‰，满足星上紫外定标的要求。

Abstract

To meet the application requirements of high stability, miniaturization and low power consumption of ultraviolet (UV) sensors in space calibration and the technical indexes such as the stability less than 1‰ and stable time less than 3 minutes when the UV Light Emitting Diode (LED) calibration is carried out with a typical current of 200 mA, a method for using a digital control circuit based on FPGA to drive the UV LED and using incremental Proportional-Integral-Derivative (PID) for close-loop control is proposed. The current stability of the UV LED is tested and the error of current changing with time is obtained. The test results show that this system can make the UV LED be stable in 3 minutes with the stability of 0.2‰ which can meet the requirement of space UV calibration.

参考文献

[1] 李幼平, 禹秉熙, 王玉鹏, 等. 成像光谱仪辐射定标影响量的测量链与不确定度 [J]. 光学精密工程, 2006, 14(5): 822-828.

[2] 任建伟, 麦镇强, 万志, 等. 星上LED定标光源的可行性研究 [J]. 光学精密工程, 2008, 16(3): 398-405.

[3] Giordanengo B, Gissot S, BenMoussa A. Characterization and Irradiation Damage Tests of AlGaN UV LEDs for Detection Spaceborne Calibration [C]. Toulouse: International Symposium on Reliability of Optoelectronics for Systems, 2014.

[4] Zender J, Berghmans D, Bloomfield D S, et al. The Projects for Onboard Autonomy (PROBA2) Science Centre: Sun Watcher Using APS Detectors and Image Processing (SWAP) and Large-Yield Radiometer (LYRA) Science Operations and Data Products [J]. Solar Phys, 2013, 286(1): 93-110.

[5] Athanassios C K, David B, Bogdan N, et al. SWAP: An EUV Imager for Solar Monitoring on Board of PROBA2 [C]. SPIE, 2005, 5901: 59010V.

[6] Tamiki Hosokawa, Kazuhiro Tanaka, Yoshihiko Okamura, et al. Engineering Model Testing for SGLI IRS Especially TIR Radiometric Data [C]. SPIE, 2012, 8528: 852818.

[7] 王东盛. III族氮化物紫光和近紫外LED的制备与研究 [D]. 大连: 大连理工大学, 2014.

[8] 李娟. GaN基紫外LED外延p型结构与工艺研究 [D]. 西安: 西安电子科技大学, 2013.

[9] 权振华. 基于FPGA数字PID控制器的实现 [J]. 中国科技信息, 2014, 13(1): 120-123.

[10] 张科, 靖固. 利用FPGA的增量式PID控制的研究 [J]. 现代制造工程, 2009, 24(3): 112-114.

金辉, 陆萌, 尹达一. 高稳定度紫外LED定标的可行性分析与测试[J]. 红外, 2016, 37(6): 19. JINHui, LU Meng, YIN Da-yi. Feasibility Analysis and Test of High Stability UV LED Calibration[J]. INFRARED, 2016, 37(6): 19.

高稳定度紫外LED定标的可行性分析与测试

关于本站 Cookie 的使用提示

全站搜索

高稳定度紫外LED定标的可行性分析与测试

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索