数据采集系统中自动校准技术的研究

Research on Automatic-calibration Technology in Signal Processing System

为使海洋观测设备在室外恶劣环境条件下仍可实现高可靠性、高准确性的自动数据采集,从而实现无人管理工作,介绍了数据采集系统的自动校准技术,即通过一个校准输入通道,产生两个高精度的基准信号,用软件的方法对模拟测量通道进行校准,以保证测量准确度。此技术已经过实验论证,并在海洋监测、气象、环保等方面取得了广泛的应用。要保证自校准电路正常工作,选择一个高稳定性基准源,是本设计的一个关键因素,要求基准源必须具有高精度、低温度系数和高稳定性。

In order to actualize self-management, the research on automatic-calibration technology in the signal processing system was discussed. Two high precision benchmark signals were brought through one calibration input channel. In order to guarantee the measure nicety, a set of software to calibration for the simulation measure channel was programmed. This technology has been demonstrated according to the experimentation and obtained application abroad in various aspects. A high-stabilization benchmark is a key in this design.