Design of CCD driver for quartz horizontal pendulum tiltmeter based on CPLD

Weiwei Zhan; Haiyan Lu; Li Cai; Xiu Wang; Zhenyu Yang

doi:10.1117/12.2083552

6 March 2015 Design of CCD driver for quartz horizontal pendulum tiltmeter based on CPLD

Weiwei Zhan, Haiyan Lu, Li Cai, Xiu Wang, Zhenyu Yang

Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 944605 (2015) https://doi.org/10.1117/12.2083552
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China

Abstract

In order to improve the resolution and conversion speed of photoelectric transducer, a high sensitive and low dark current CCD image sensor TCD1711DG was used in SQ-70D digital quartz horizontal pendulum tiltmeter. The timing chart of CCD has fixed state transition and rigorous timing requirements at typical pulse frequency. Then, a method of controlling the pulse state transition was developed by synchronous counting. The driver was carried out by using Verilog HDL based on CPLD. Simulation and experimental results indicated that the driver designed by this method was simple and stable enough to meet the timing requirements of TCD1711DG. Furthermore, integration time of the CCD could be revised flexibly by setting controlled variable QINT which improved the adaptability of the tiltmeter to different lighting levels.

Citation Download Citation

Weiwei Zhan, Haiyan Lu, Li Cai, Xiu Wang, and Zhenyu Yang "Design of CCD driver for quartz horizontal pendulum tiltmeter based on CPLD", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944605 (6 March 2015); https://doi.org/10.1117/12.2083552

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