双圈同轴式光纤涡轮流量计的智能化设计

Design on the Intelligent Turbine Flowmeter Based on Two-circle Coaxial Fiber

摘要:

为了克服现有电磁式涡轮流量计的量程小，易受电磁干扰的缺点，本文设计了一种双圈同轴式光纤的涡轮流量智能检测系统。该测试系统由三大模块组成，双圈同轴式的光纤传感器作为信号拾取工具，硬件电路对信号进行预处理，TMS320F2812 DSP对信号进一步软件处理。经过实验验证，该测试系统在5-300Hz的测量范围内，测量误差小于0.5%。因此，该测试系统具有较高的测量精度和可靠性，这为光纤涡轮流量计的样机制作提供了重要依据。

Abstract:

An intelligent turbine flow detection system based on two-circle coaxial fiber was presented in this paper. For a start, the two-circle coaxial fiber optic sensor was used for picking up signal, the next, the hardware circuit was for signal preprocessing, once mare, the TMS320F2812 DSP chip was used for further signal processing by software, finally, the flow signals can be obtained. The structure of two-circle coaxial fiber adopted can eliminate interference factors, while the DSP can perform high-speed signal acquisition and processing with algorithms, which supplied an important basis for the prototype manufacturing. The system can be applied to liquid flow measurement in industrial production, scientific research and aerospace power plant fuel control, which is better than the traditional electromagnetic turbine flow mater in terms of functionality and maintainability.