【摘要】 用基于DSP的数字式双余度数据采集系统替代了传统的模拟式单通道数据采集电路,并运用软、硬件结合的方法实现了发动机参数采集器的B IT(机内自检测)功能[1],使输出端自动切换到两个冗余通道中误差更小的采集通道,提高了发动机参数采集器的可靠性和数据采集精度。理论计算和实验结果表明这种设计相比传统电路可靠性和测量精度有显著提高。更多还原

【Abstract】 Digital dual redundancy data collecting system based on DSP substitutes for conventional analog single-channel data collecting circuit.Built-in test function for engine parameter collector is realized using software and hardware.Switching on the output of collecting circuit to the less error of the redundancy channels enhances reliability and collecting precision of the parameter collector.Theoretic calculating and experimentation result prove that this design has more reliability and collecting precision than the conventional analog.更多还原