谐振式微传感器同步专用信号源设计  

Research on Synchronizing Signal Source for Micromachined Resonant Sensor

作　　者：邢维巍[1] 王炜明[1] 谷姗姗[1] 樊尚春[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《计测技术》2013年第5期29-32,共4页Metrology & Measurement Technology

基　　金：国家自然科学基金资助项目(60927005)

摘　　要：为满足谐振式微传感器对信号源同步性的要求，本文提出了一种对数字频率信号进行同步输出的方案，使用AD9852提供准确的数字频率输出信号作为FPGA的输入，由FPGA实现对信号的二次分频及同步输出。最后给出了Modelsim仿真结果并通过电路实现结果验证了方案的可行性。结果表明在1～10MHz的输入频率下，同步输出信号的频率偏差小于0．01μs。To meet the demands for synchronizing signal sources of micromachined resonant sensors, this paper presents a method of digital synchronization output signal, using AD9852 to provide accurate digital frequency output signal as the input to FPGA, and making FPGA imple- ment the division by two circuits and the synchronization of signal output. Modelsim simulation and circuit realization results are given to verify the feasibility of this method. Results show that within the input frequency range of 1 - 10 MHz, the frequency deviation between the two-way synchronization output signals is less than 0. 1 μs.

关 键 词：谐振式微传感器 同步信号源 AD9852 FPGA 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]