| 1. | The traditional signal processing methods that amplify , filter , rectify signal and count , which are used in vortex flowmeter now , has shortage in extracting real flow signal from noise . the methods that restrict measurement range or do n ' t measure small flow have to be adopted
目前涡街流量计所采用的放大、滤波、整形、计数的处理方式，在从噪声中提取流量信号方面存在较大的局限性，只能采用限制量程比、不测小流量等方法来抑制噪声。 |
