|
|||||
|
|
| 逻辑门混频器的特性分析与选择 | |
| 引用本文： | 张伟玉,董晋峰,张国雄,单慧勇.逻辑门混频器的特性分析与选择[J].数据采集与处理,2011,26(1):63-68. |
| 作者姓名： | 张伟玉 董晋峰 张国雄 单慧勇 |
| 作者单位： | 1. 天津大学精密测试技术及仪器国家重点实验室,天津,300072;天津农学院机电工程系,天津,300384 2. 天津农学院机电工程系,天津,300384 3. 天津大学精密测试技术及仪器国家重点实验室,天津,300072 |
| 基金项目： | 天津市高等学校科技发展计划基金(20070913)资助项目 |
| 摘 要： | 在基于频率输出的传感器测量电路设计中,存在如何测量由测量参数引起的小频率增量问题,将被测信号和参考信号进行混频并进行滤波可以解决这个问题.将仅频率变化的两准数字信号施加于逻辑门进行混频,对混频器输出的特性进行了理论分析和实验验证,结果表明:异或门和同或门用作差频测量的混频器时,其输出效果明显好于其他基本逻辑门;当信号为... |
| 关 键 词： | 逻辑电路 混频器 微差测量法 频率测量 |
Choosing Suitable Logic Gate Mixer for Measuring Frequency Difference |
|
| Zhang Weiyu,Dong Jinfeng,Zhang Guoxiong,Shan Huiyong.Choosing Suitable Logic Gate Mixer for Measuring Frequency Difference[J].Journal of Data Acquisition & Processing,2011,26(1):63-68. | |
| Authors: | Zhang Weiyu Dong Jinfeng Zhang Guoxiong Shan Huiyong |
| Affiliation: | Zhang Weiyu1,2,Dong Jinfeng2,Zhang Guoxiong1,Shan Huiyong2(1.State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,Tianjin,300072,China,2.Department of Electromechanical Engineering,Tianjin Agriculture University,300384,China) |
| Abstract: | In the design of measuring circuits based on frequency transducers,it is necessary to measure small frequency increments caused by the change of the measured parameter.The mixer receives inputs from the reference oscillator and the monitor oscillator,and a low pass filter produces an output with the difference of the two input frequencies.Two quasi-digital signals are connected to the inputs of the logic gate mixers and the output characteristics of the mixers are studied in theories and experiments.Results... |
| Keywords: | logic circuit mixers differential measurement method frequency measurement |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |