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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Design and realization of timely auto-detection based on high-precision photoelectric encoder (EI CONFERENCE) 会议论文 2012 2nd International Conference on Instrumentation and Measurement, Computer, Communication and Control, IMCCC 2012, December 8, 2012 - December 10, 2012, Harbin, Heilongjiang, China Yang N.; Wang Y. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 A high-speed processing circuit based on DSP is designed to meet the increasing demand for the reliability of the high-precision encoder  and all analog signals are acquired by AD converter. The processing circuit can timely online automatically detect  diagnose and repair the fault point in time. The time of diagnosis and maintenance is highly reduced while the reliability is enhanced. The high-precision  high-intelligence and high-reliability photoelectric encoder is achieved by this method in practical application and the expected result is obtained. 2012 IEEE.   Design of CAN bus interface for photoelectric encoder in the spaceflight camera (EI CONFERENCE) 会议论文 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China Sun Y.; Wan Q.-H.; She R.-H.; Zhao C.-H.; Jiang Y. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 In order to make photoelectric encoder usable in a spaceflight camera which adopts CAN bus as the communication method  CAN bus interface of the photoelectric encoder is designed in this paper. CAN bus interface hardware circuit of photoelectric encoder consists of CAN bus controller SJA 1000  CAN bus transceiver TJA1050 and singlechip. CAN bus interface controlling software program is completed in C language. A ten-meter shield twisted pair line is used as the transmission medium in the spaceflight camera  and speed rate is 600kbps.The experiments show that: the photoelectric encoder with CAN bus interface which has the advantages of more reliability  real-time  transfer rate and transfer distance overcomes communication line's shortcomings of classical photoelectric encoder system. The system works well in automatic measuring and controlling system. 2009 SPIE.   Low power frame buffer pixel circuits for LCoS microdisplays (EI CONFERENCE) 会议论文 13th International Display Workshops, IDW '06, December 6, 2006 - December 6, 2006, Otsu, Japan Song Y.; Ling Z. 收藏  |  浏览/下载：11/0  |  提交时间：2013/03/25 In the frame buffer pixel circuits  extra power was dissipated to implement the data transfer operation. Extra power dissipation can not only increase power but also decrease the device reliability. One method to deal with it at pixel level is needed. In this novel pixel circuit  one PMOS transistor acts as a simple analog comparator  in order to determine whether the discharging by comparing the current pixel voltage and the next frame data voltage.   A new synchronization control circuit based on CPLD for the laser range-gated imaging system (EI CONFERENCE) 会议论文 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China Xu X.; Wang X.; Tang F.; Yu Q.; Guo J. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 The synchronization control technique is one of the most key techniques in the laser range gated (LRG) imaging system. Conventional control circuits are composed of discrete components and Medium Scale Integration (MSI) and Small Scale Integration (SSI)  which have bad reliability and poor ability of anti-interference. The idea of using the Complex Programmable Logic Device (CPLD) to realize the monostable trigger circuit is introduced. On the basis of analyzing the performance requirement to the synchronization control of the laser range gated imaging system  a new synchronization control circuit based on CPLD is presented. The circuit based on CPLD is very compact and flexible and has high reliability and strong ability of anti-interference. The synchronization control circuit based on CPLD can provide a wide selection of gate widths  pulse widths and delays. The synchronization control circuit is successfully used in our experiment and the expected result is obtained.