一种具有电气隔离的数据采集与处理系统

A Data Sampling and Processing System with the Ability of Electrical Insulation

摘要: 由于高压侧设备的数据采集对高压绝缘和抗电磁干扰性能有很高的要求，本文设计了一种具有电气隔离的数据采集处理系统。在高压侧对采集的信号进行I/F转换，通过光纤通信传输至低压侧进行F/D转换实现高压侧信号的数据采集，最后将数据传输给DSP完成后续处理。实验结果表明高压数据采集系统线性度好，达到0.2%精确度，具有抗强电磁干扰和高压绝缘隔离能力。

Abstract: The data-sampling system of the equipments on the side of high-voltage has high requirements on high-voltage insulation performance and anti-electromagnetic interference ability. This paper designed a data-sampling and processing system with good performance of electrical insulation. After the I/F conversion of the collected signal on the side of high-voltage, the transformed signal will be transmitted to the side of low-voltage by the optical fiber communication system and then it will finish the data-sampling of the signal on the side of high-voltage after the F/D conversion of the received signal. Finally, the signal will be transmitted to DSP to make a subsequent processing. The test results show that the data-sampling system of the equipments on the side of high-voltage has a good linearity. It can attain the accuracy of 0.2%. Also it has superior anti-electromagnetic interference ability and high-voltage insulation ability.