| 基于PT4115驱动的高精度数字LED星等模拟器 |
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| 引用本文： | 高兴华,李建永,全继花,赵昆明,覃正梅.基于PT4115驱动的高精度数字LED星等模拟器[J].应用光学,2016,37(2):276-280. |
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| 作者姓名： | 高兴华 李建永 全继花 赵昆明 覃正梅 |
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| 作者单位： | 1.北华大学,吉林 吉林132013; |
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| 基金项目： | 吉林省科技发展项目（20150204046GX） |
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| 摘 要： | 依据地面设备标定的需要，介绍了一种高精度、有限空间、全光谱的星等模拟器实现方法。该星等模拟器的光学系统结构采用紧凑结构空间设计，其控制采用脉宽调制（PWM）技术，应用白光XLamp LED作为光源，并以PT4115作驱动，实现了对LED光照强度在640 lx~1.0 lx范围内数字化任意调整。所设计的星等模拟器与传统模拟调节的星等模拟器相比，该星等模拟器具有体积小、热量低、稳定性高等特点。通过在暗室环境中进行应用验证，分析和测试结果表明:该星等模拟器可实现0m~7m等星控制，光谱范围覆盖整个可见光，星等的控制精度高达0.1m。
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| 关 键 词： | 星等模拟器 星敏感器 PT4115驱动 LED光源 |
| 收稿时间： | 2015-10-16 |
High precision digital LED magnitude simulator based on PT4115 drive |
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| Affiliation: | 1.Beihua University,Jilin 132021,China;2.Jilin Petrochemical Company,Jilin 132021,China;3.Shanghai Xinyu Zhencheng Electronic Technology Co.,Ltd.,Shanghai 201802,China |
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| Abstract: | In order to meet the demands of the calibration for ground equipment, a new type of high precision star magnitude simulator with limited space and full spectrum was presented. The optical system structure of the star magnitude simulator was designed to be the compact structure space. The control system based on the pulse width modulation (PWM) technology can realize the digital adjustment of the LED light intensity from 640 lx to 1.0 lx. The system which was drived by PT4115 used the white light XLamp LED as the light source. Compared with the traditional analog adjustment star magnitude simulator, the new star magnitude simulator has the characteristics of small volume, low heat and high stability, etc. Through the application in dark room environment, the analysis and test results show that the 0m~7m magnitude stars can be simulated, the spectral range can cover the whole visible light, and the control precision of the star magnitude is up to 0.1m. |
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