【摘要】 本文介绍了桥路法信号测量电路的构成,提出了用桥路法减小干扰信号、提高测量精度的理论。在该理论的基础上,采用8335数据采集卡分别采集桥路测量电路和传统测量电路的信号,验证了桥路法在气敏传感器信号采集上的优越性。更多还原

【Abstract】 The construction of bridge method of signal measuring circuit is introduced. The theory is presented that the bridge method can decrease interfering signal and promote the accuracy of measurement. On the basis of this theory, by collecting respectively signals of the bridge measuring circuit and traditional measuring circuit using 8335 data collection card and comparing the results, the superiority of bridge method on signal acquisition of gas sensor is validated .更多还原